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    21

















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    Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    by stevedownunder ๐Ÿ‡ฆ๐Ÿ‡บ ( Midshipman)
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    8 days ago by stevedownunder ( Midshipman)
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    Part 19.
    With things settling down in the engine room, and having run my plant several times without any real drama I started looking at what next.

    Early in this project I decided that a forced ventilation system would be something I would try, seeing I donโ€™t like the idea of letting convection move the hot air out of a fairly enclosed area.

    To make this happen I wanted to fit a fan at either end of the boat with one in the bows pushing outside air in and the other pulling air out, or maybe pushing air in creating a combined flow up the funnel, ventilators and any other opening.

    Luckily there is a hooded companionway in the bows under neath which I can hide a fan.

    With the rail back in the hull, I worked out the fanโ€™s location on the deck then made a card board representation of the companionway opening.

    All of this work was made a lot easier due to there only being deck beams, therefore I could clearly see where things could go.

    A cardboard mock up was made of the duct that would connect the fan to the deck beams.

    Then once the shape was settled these shapes were transferred to ply wood cut out and glued together. The whole assembly including fan is easily removable.

    I then made a stand to sit the rail on when out of the model, while designing this I decided to make it multi purpose, one other use being to keep the lower hull and upper hull separated for unplugging a multi pin plug another use being to display the model.

    In the removable deck section there is a bit of wiring that in my opinion needed to be done now while there is easy vision and access. Wiring is needed for lighting, power to a voltage multiplier to run the 2 fans at up to 24 volts, for 2 servos to control the mizzen sail one servo hopefully to raise and lower the other for sail trimming.

    All of this going through a multi pin plug, the plug I bought is only an audio plug but seeing that I think there will only be about 1 amp running through any one of the pins at any one time I think it should do the job.

    With the rail in there is not a lot of room for much else, funny how it has filled up with equipment considering I thought there was plenty of room in the beginning.

    If you have any questions donโ€™t hesitate to ask.

    Thanks for looking in.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    6 days ago by Ron ( Commander)
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    What if something needs replacing? Can you get your fingers down in there?
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    6 days ago by jbkiwi ( Admiral)
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    Hi Steve, this is like watching a number of pieces of art being assembled. Amazing amount of work going into this. Corker stuff mate!๐Ÿ˜

    JB
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    7 days ago by stevedownunder ( Midshipman)
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    Thanks Rob,

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    7 days ago by stevedownunder ( Midshipman)
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    Thanks Martin,

    Yes it certainly looks like she might be over loaded, however she will still need some ballast...

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    7 days ago by robbob ( Vice Admiral)
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    Hi Stephen.
    I'm really liking the way this model is coming together.
    I don't often use the word 'awesome' but I am truly in awe of the skills you are employing to build this fabulous model.
    Great work as always ๐Ÿ‘๐Ÿ‘
    Rob.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    7 days ago by Martin555 ( Fleet Admiral)
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    Hi Stephen,
    Excellent work as usual.

    Just looking at the photos and all the stuff fitted in place i am wondering if you fit anything else will she stay afloat ?

    Martin555.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    7 days ago by stevedownunder ( Midshipman)
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    Thanks Ian,

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    8 days ago by Ianh ( Lieutenant Commander)
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    Hi Stephen
    Oh for the lack of space! Happens to us all at some time!
    Murphy's Law and he was an optimist
    I must compliment you on your neat work!
    Regards
    Ian
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    14 days ago by stevedownunder ( Midshipman)
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    Part 18.

    Testing of steam plant!!

    I started testing and rectifyingย problems and it still continues, both my feed pumps decided they didn't want to work after sitting for quite a while, I discovered that both of the inlet check valvesย (3mmย  balls) were sticking / jammingย in their housings so I changed them to 1/8" balls problem fixed.

    Unfortunatelyย it does my head in when I run into problems, in my head it should just work!!!
    This is something that is improving as I get older, I am now less likely to throw my hands in the air so to speak.

    Then on testing for gas leaks using compressed air I found that the gas regulator I bought didn't have the output fitting soldered on properly and was leaking quite a bit, I have now soft soldered the leak.

    Then the output from my gas shutoff valve would not seal and after many headaches later I made a new output fitting machined off most of the old on then soft soldered the new one on problem fixed, looks like the guy in quality inspection was asleep on the job.

    As testing progressed the gas metering and shutoff valve's work a treat. I didn't find out there was a problem with the gas shutoff output until I lit the burner and after a minuteย I had flames where I didn't want flames. This was quite alarming though all was under control after flicking the switch on the transmitter that closes the shut off valve.

    A few days later things didn't improve much when I tried to run the steam plantย  (I went out with the expectation everythingย would work, thisย being theย main problem) and nothing seemed to work apart from feed pumps and gas valves that is.
    I tried lighting the new burner that was now in itโ€™s correct place for the first time and it would not run when inside the generator ( I have probably made the flue diameter too small, I did think of a temporary fan to induce a draft through the generator, though I didnโ€™t try it ) when I got it to run by removing the bush that centralisesย it in the generator it didn't seem to do much. Not happy!!!

    I went inside for a while to settle down and start to think about what had happened.

    I thought I would try the old Cheddar steam burner ( I had made up pipe work to try it anyway) what a difference things started to happen, I discovered that I had filled the entireย system with water including the engine which I think sort of hydraulicโ€™ed and locked up I had hot water coming out all over the place and not much else happening.

    I was ready to give the whole thing up and either buy a commercial steam engine or just put an electric motor in and be done with it. To say I felt dejected would be an understatement.
    I went back inside again. I even had a look at a beautiful Martin Baylis Engineering twin slide valve engine,ย I hate to think how much one ofย those isโ€ฆ.

    Once I started to rationalise the whole thing I started to calm down, I decided that next morning I would run the engine on compressed air firstย  to prove that it would run.

    So next morning I hooked compressed air up to my engine and it ran, I found that the main leaks were from the forward/reverse valve, I removed it then pulled it apart flattened both faces reassembled and ran with compressed air, the engine seemed to run well.

    I changed the feed pump curve on the transmitterย and halving the feed pump max speed to reduce water flow.

    I tried running the plant again and to my joy it ran, still pumping too much water though. It has run several times now still reducing the amount of feed water.

    There is still more to do on the plant, like adding temperature sensors to monitor steam temperature and maybe ambient inside temperature.

    I did a couple of short videos of the plant starting and running, copy these links into your browser and hopefully they will work!!!

    https://drive.google.com/file/d/1nNLcLTmSRDOMlJ7Jjs0bv1l5hN-...

    https://drive.google.com/file/d/1WGQriB00oJrtE_C3jLLSrfDeEt_Yn7T8/view


    Thanks for looking in and Happy New Year to all the crew at Model Boats Website.

    Cheers,
    Stephen.
    https://drive.google.com/file/d/1nNLcLTmSRDOMlJ7Jjs0bv1l5hN-iuO1K/view
    ๐Ÿ”—
    https://drive.google.com/file/d/1WGQriB00oJrtE_C3jLLSrfDeEt_Yn7T8/view
    ๐Ÿ”—
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    12 days ago by stevedownunder ( Midshipman)
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    Hi Edward,

    Yes you are right and I will do something like that in the future.

    Thanks, I am glad you are enjoying the blog.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    12 days ago by cenbeth ( Chief Petty Officer 1st Class)
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    Hi,

    I know that steam locos have a bypass valve on the water feed pipework to allow the partial return of the feedwater. Would one help with your system?

    I'm enjoying your blog!

    Keep it up

    Edward
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    14 days ago by stevedownunder ( Midshipman)
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    Thanks Martin,

    Maybe it is some sort of mad science experiment, haha.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    14 days ago by Martin555 ( Fleet Admiral)
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    Hi Stephen,
    It is great to see you have the engine moving.
    Looking at that setup on the bench it looks like some mad science experiment.
    I certainly would not have the patiences to do what you are doing.
    I would be expecting a big bang followed by no shed LOL!!

    Martin555.
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    28 days ago by stevedownunder ( Midshipman)
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    Part 17.2.

    Any non coloured Brass parts were given a coat of clear Lacquer.
    Control of the steam engine requires 3 servos, one for gas metering, one for feed pump speed, one for forward / reverse on the engine.

    All controlled from a single input on the transmitter, which is a Taranis 9XD+ programmed via OpenTX Companion.

    A switch on the transmitter controls a fourth servo for the gas on / off valve.
    ย 
    All gas equipment is painted white.

    If you have any questions donโ€™t hesitate to ask.

    Thanks for having a look.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by stevedownunder ( Midshipman)
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    Thanks JB,

    Sounds like you sons friends old man is the real thing, making a steam locomotive is a lot of work, I am not even sure if my next boat will be steam powered yet.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by stevedownunder ( Midshipman)
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    I will take that as a big complement thanks mturpin,

    No risk of me leaving this country at present, one year ago here in Melbourne it was 44 deg C and more like a blast furnace out side with a large amount of smoke from bush fires, this year it is wet and cool all ok except the Covid19.
    Stay safe.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by stevedownunder ( Midshipman)
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    Hi Ianh,

    Unfortunately they would be warmed up because of the heat transferring system,(the copper tube wrapped around the gas cyl and separator) pumping water around the separator picking up heat then moving it to the gas cylinder cooling the water and returning around.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by stevedownunder ( Midshipman)
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    Hi Nerys,

    I think genius is going a bit far but thanks all the same. ๐Ÿ˜€

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by stevedownunder ( Midshipman)
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    Thanks Doug,

    Stay tunned for raising steam in the future.

    Stay safe up there in the northern hemisphere.
    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by stevedownunder ( Midshipman)
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    Thanks there Inkoust,

    Some really nice models in the link you put up.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by stevedownunder ( Midshipman)
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    Thanks Colin,

    I don't know if it is a master class though I do like to do things differently.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by stevedownunder ( Midshipman)
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    Thanks Martin I really appreciate your comments.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by jbkiwi ( Admiral)
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    Lovely bit of work mate. My sons' friends old man's a model steam train enthusiast, (ex Rhodesia) and has a full on engineering workshop under his house mainly for that. It's amazing what you steam guys can turn out.

    JB
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    27 days ago by mturpin013 ( Commodore)
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    I'll be keeping this blog in my library for reference in my next build which is steam powered, so "don't leave the country" as they say, unless its to the UK somewhere near to where I live.๐Ÿ˜
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    28 days ago by Ianh ( Lieutenant Commander)
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    Now make enough space around the gas cylinder (Ideal for keeping a couple of Bevvies Cold)
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    28 days ago by Nerys ( Vice Admiral)
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    Wonderful bit of work, true engineering genius. People with your ability are few and far between these days.

    Cheers, Nerys
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    28 days ago by RNinMunich ( Fleet Admiral)
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    Looks absolutely Supercalifragilistic to me Stephen,
    but as long as you know what each lovingly made part should do and how it all works together that's good enough for me๐Ÿ‘
    Can't wait to see her at Chuffing stations๐Ÿ˜€
    Stay safe, cheers Doug ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    28 days ago by Inkoust ( Midshipman)
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    Beautiful work buddy. Zdenek๐Ÿ‘๐Ÿ‘๐Ÿ‘

    (Ahoj Zedenek, zmฤ›nil jsem svลฏj webovรฝ odkaz na anglickou verzi. Doufรกm, ลพe vรกm to nevadรญ, na zdravรญ, ๐ŸคžDoug๐Ÿ˜Ž)
    https://inkoust.estranky.cz/en/
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    28 days ago by Colin H ( Rear Admiral)
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    Well shipmate that's another masterclass in miniature engineering, your modelling skills are some of the best I have ever witnessed.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    28 days ago by Martin555 ( Fleet Admiral)
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    Hi Stephen.
    That engine/boiler/gas setup is a masterpiece in it's own right, and that is without that fantastic hull wrapped around it.

    Excellent work.

    Martin555.
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    28 days ago by stevedownunder ( Midshipman)
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    Part 17.

    Back to the engineering side of things, next job was gas control.

    I had a look around the internet trying to get some design ideas for RC servo controlled gas metering valves to no avail, all I came up with were some commercially made RC servo controlled gas shut off valves.

    For one reason or another nothing suited my instillation, in the end I decided to make 2 externally similar valves and mount them on a manifold, similarly to how Hydraulic and Pneumatic valves are mounted in industrial installations.

    One reason for this was to reduce overall space taken.

    There are some things that I need to draw before attempting to make and these valves fall into this category. Using CAD I designed then built a metering / flow control valve and a shut off valve.
    The metering valve allows me to go from an idle flame through to full flame.

    I am also using a small commercialย gas regulator this should give me a constant pressure and therefore a constant flame.
    ย 
    I started buy making the metering needle this was quite tricky, being made from Stainless Steel with a taper of around 2 degrees, this made for a taper length of around 15mm going from a point up to 1mm diameter add a polished finish and this took me around one day to do.

    In the end I rejected the first needle and proceeded making up the body linkage and servo horn adaptor.

    For the servo horn adaptor I machined a disk with a groove on the lathe, then in the mill I machined a notch finishing off with a file.

    The small radius was filed by hand up to a guide turned on the lathe, this made it really easy to achieve a nice radius.

    Two pipeโ€™s were made one for each gas burner that I have, when I am making up odd shaped piping I use wire of some sort that is close to the same diameter as my pipe in this case I used heavy gauge soft solder bent to shape as a guide.


    I also made up a servo mount for the forward/reverse and rudder servos along with 3 special long screws for holding down the plant rail, these screws enable installation and removal without tools also it is easier.

    Continuing in part 17.2.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    26 days ago by stevedownunder ( Midshipman)
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    Hi mturpin,

    I tend to have a bit of a love hate relationship with the engineering side of this build, it is all good until testing starts. haha.

    I believe that well made components will preform better for longer than roughly made items.

    At the end of the day it is your build and you are allowed to over engineer things if it suits you as long as you are happy with the extra weight.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    27 days ago by mturpin013 ( Commodore)
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    Hi Steve I do like the engineering side of things. There is some really precision work there a credit to you. I sometimes think that the engineering part of boat building is the most interesting, however it usually causes issues with weight as I tend over engineer a solution as others have commented, but I like engineering.
    Great job Steve
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Part 16.

    The rudder was something I was looking forward to building for a long time.

    Combining a small amount of woodwork with a reasonable amount of metal fabrication, having done a lot of work on the steam plant I chose to take a break from that aspect and make the rudder.

    My aim was to build a rudder and rudder post as close as possible to the original using the plan and book From Tree to Sea as a guide, while being able to remove it completely from the boat.

    My initial design envisaged a few compromises and alterations the most obvious being distance between rudder shaft and rudder post.

    After finding that the rudder shaft tube was not quite on the right angle, I removed it and elongated the hole slightly.

    Then I started making up a lower rudder shaft support or โ€œTOE IRONโ€ as this fixes the rudder shafts lower position.
    This was fabricated from brass, silver soldered together.

    Next was the โ€œTโ€ section rudder post, I tried to find a length of commercially made brass material with no success.

    There were two ways I could go, fabricate or machine from solid, I wasnโ€™t confidant of fabricating a โ€œTโ€ to the quality I was looking for so I machined one from solid brass in the mill.

    Next, I made the upper and lower rudder post brackets.

    Cutting them from brass sheet then folded them to shape. These were silver soldered to the rudder post in a jig of sorts to assure alignment.

    Making the hinge like components that bolt to the Rudder post and retain the rudder shaft, proved time consuming.

    The miniature HEX nuts and bolts are homemade, commercial ones having too big a HEX for this application.
    Turned out the woodwork part of this was not much work.

    As my build progressed, I ended up either moving position, remaking or modifying some of the components moving away from my original design and finding that I was able to build a more accurate representation whilst still being completely removable, all taking considerably longer than expected, nothing new there.

    Thanks for having a look.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    1 month ago by stevedownunder ( Midshipman)
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    Thanks JB,

    Cheers,
    Stephen.
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    1 month ago by jbkiwi ( Admiral)
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    Beautiful job Stephen, going to look great when everything is painted up๐Ÿ‘

    JB
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    1 month ago by stevedownunder ( Midshipman)
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    Thanks Colin,
    It's good to have access to larger equipment.

    Press brake and roller is also quit handy to have access to.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    1 month ago by Colin H ( Rear Admiral)
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    Thats a nice setup, I'm green with envy.
    I have to visit my old works to use their milling machinery and surface grinder for larger jobs.
    Both prewar and sweet to use.
    They also let me use the press brakes and roller if I'm forming stuff.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    1 month ago by Colin H ( Rear Admiral)
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    Sorry old school, combination mill with swing head over lathe, no cnc all manual on handle dials. Not bad for general work.
    I prefer my old little unimat setup for fine detail machining as it has both milling head and lathe .
    The wife has a unimat 1 setup, for her dolls house work, works well with wood, plastic and soft metals.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    1 month ago by stevedownunder ( Midshipman)
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    Hi Colin,

    This might be more helpful, a picture tells a thousand words. This is my mill with rotary table including 3 jaw chuck mounted and vice fitted to the table.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Thanks Brian,

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    "I have a Chester machine centre" That is impressive Colin, I assume you are talking about a CNC, how many axis?

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Thanks Colin,

    The machine pictured is what I would call a small mill, the task being preformed is making of 2 mm AF Brass hex.
    The job is being held in a rotary table mounted at right angels to the spindle.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Thanks Doug,
    Great to hear you got something out of the post.

    It will be quite awhile before she gets wet, I want to plank the deck and make the bulwarks before painting the hull and being back working full time means progress has slowed back to a glacial pace.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by brianupyonder ( Warrant Officer)
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    well done
    brian
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by Colin H ( Rear Admiral)
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    Thats a beautiful bit of metalwork, well done, whats the machine you use. I have a Chester machine centre which struggles with fine detail work.
    The detail of your ship is coming alive with each session.
    Well done shipmate, Colin.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by RNinMunich ( Fleet Admiral)
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    Awe inspiring stuff Stephen๐Ÿ˜ฎ๐Ÿ‘
    Some good tips n tricks in your blog that may help me with my Danish cutter refurb and conversion.
    Can't wait to see her underway, you too I s'pose๐Ÿค”
    Greetings to Down Under from Up Over!
    Keep busy, keep well๐Ÿคž
    Doug ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Thanks Mike,

    Yes for once I am happy with the outcome.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by mturpin013 ( Commodore)
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    Some nice metal work there Steve, you should be pleased with the result.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Thanks Peter,

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by MouldBuilder ( Commodore)
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    Great bit of engineering there. Looks really nice.
    Peter.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Thanks Martin555,

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by Martin555 ( Fleet Admiral)
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    Stephen,
    The rudder has come out great.
    Well worth the time taken.
    Keep it up.

    Martin555.
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Part 15.

    With most equipment mounted on the rail I pulled it apart and painted it.
    Turns out there are quite a few parts!!

    I painted the rail parts dark Brunswick green, feed pumps and manifold Blue.
    Stop valve and pressure relief valve Red. Parts that are natural brass or copper were clear coated.

    Somewhere along the way I dropped the idea of using an Arduino Nano and settled on using a FrSky Taranis 9x plus, programmable radio.
    This radio has Telemetry along with the benefit of being able to be programmed using Open TX Companion.
    This is an open source program that runs on a computer allowing me to create a program on my computer test it on the computer then download to the transmitter.

    I have not tried to copy what Ian Gerrard did in his truly amazing control system however I have taken the concept and adapted it to a manageable level for me.

    After the paint had fully dried I reassembled the rail.
    I had read that balsa wood has really good insulating properties so I made an insulating tub for my steam manifold from it then painted it silver.

    Before I mounted too many things to the rail I set the relief valve using compressed air.

    I mounted all the equipment that has been made so far to the rail.

    Thank you to those following and for all the likes, I really apprentice them.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Thanks Martin,

    Yes you are quite right a heck of a lot of planning and work went into that.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by Martin555 ( Fleet Admiral)
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    Hi Stephen,
    There is a massive amount of work that you have put into the motor, boiler and valves and other bits and bobs.
    She is going to look fantastic when she is finished.

    Martin555.
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Part 14.

    I decided to build two feed pumps from a Peter Arnot design featured in Model Boats magazine mounting them horizontally this was in an effort to smooth out the feeding of water, my theory being that If you feed a pulse of water into the system it can pulse at the other end.

    Funnily I have only just recentlyย found an article in an old Model Engineer that said a 3 cylinder pump was preferable for feeding flash steam systems.
    My pumps are driven by a small motor through a speed control. The more steam I want the more water I feed.ย 

    I decided to make a rail to mount as much equipment as possible onto.
    Using 2 lengths of ยฝโ€ SHS (square hollow section) with separating pieces screwed on.
    Mounts were made and epoxied onto the keel, using a temporary setup to hold the rail perpendicular to the centre line.
    The rail is held down by 3 screws for quick removal.

    After the rail was made but not painted yet I positioned all the equipment.
    Because the flue/exhaust for my Steam generator is not positioned directly under the funnel I made up an offset flue out of steel pipe.

    I made my own stop valve, pressure relief valve, manifold and separator.
    Modified model aircraft fuel tanks are used for feed water and recirculating water tanks, a small pond pump is used for circulating water.

    I was starting to get worried whether my drifter had put on too much weight.
    So I wrapped the lower hull in plastic film and did a practical test in a wading pool, this showed no problems to my delight.
    Requiring some ballast and sitting at the preferred waterline, with no need to go on a diet.

    Thanks for having a look.

    Cheers,
    Stephen.
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    2 months ago by stevedownunder ( Midshipman)
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    Thanks Martin,

    Flash steam is more complex than your run of the mill boiler.

    You could be right about the mad bit, haha.

    Thanks again.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by Martin555 ( Fleet Admiral)
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    Hi Stephen,
    There is a lot more to steam power than meets the eye.

    The last three photos look like something a Mad Professor is experimenting with and not a water to steam converter LOL!!

    I dose look extremely impressive though
    Excellent workmanship.

    Martin555.
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Part 13.

    One of the guys at the model boat group I belong to tried a Flash steam / steam generator / mono tube boiler or which ever name you wish to use.

    Tom was saying that he should be able to raise steam within a couple of minutes with his new system, this got my attention!

    I donโ€™t like the amount of time my boiler takes to raise steam, so I thought I would look into this different way of producing steam for those who may not know a steam generator otherwise known as flash steam or monotube boiler, all the same thing.
    You pump water in one end of a tube, heat it and steam comes out the other end, as there is no storage of steam unlike a conventional boiler, when you take the heat off the steam stops, more importantly for me it raises steam quickly.

    There is not a lot of information about flash steam. Most information I found was related to steam cars or tethered hydroplanes. Although there are a couple of sites that are of use.

    Then once again it is a good thing to read a magazine like Model Boats because in the January 2016 Model Boats mag there was an article about an Edwardian Steam Launch, for those who are interested here is a link to the article;

    http://www.modelboats.co.uk/news/article/model-engineer-exhi...

    I tried to find out more about this model, eventually I found that Ian Gerrard wrote an article for Engineering in miniature magazine.

    By now I was totally sold on the idea of a steam generator.

    Below is a link for the article in PDF that goes into how he used computer control to control his monotube boiler!!
    Wow I was and still am blown away by his approach to controlling his steam generator.

    I am not even close to having the ability to do such a thing although initially I thought I would probably use an Arduino Nano as the micro processor if I went down that path.
    Again for those interested in how he made it happen, copy the link below.
    http://eddy.dawa.de/DUK-flashboiler/elektronisch_gesteuerter...

    This is a you tube video of the latest boat this guy has made.
    https://www.youtube.com/watch?v=Az_U-Qeb3fY

    From the research I did it appeared that heavy wall 3/16โ€ copper tube was preferable the other important requirement is for the tube to be as long as possible.

    I had a couple of ideas for how to improve the insulation of my future steam generator and whilst discussing this at a model boat group meeting Alan came up with the brilliant idea of using a vacuum to insulate the inner from outer.

    I found an old stainless steel vacuum flask that looked like the right size, checked it in the hull to make sure.
    Holes were cut into the vacuum flask where required then bushes silver soldered in. This really tested my silver soldering ability.

    I will let the photos speak for themselves.

    Thanks for looking in.
    Cheers,
    Stephen.
    http://www.modelboats.co.uk/news/article/model-engineer-exhibition-2016/24677
    ๐Ÿ”—
    http://eddy.dawa.de/DUK-flashboiler/elektronisch_gesteuerter_Durchlaufkessel-engl.pdf
    ๐Ÿ”—
    https://www.youtube.com/watch?v=Az_U-Qeb3fY
    ๐Ÿ”—
    โ–ถ๏ธ
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    6 days ago by Ron ( Commander)
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    Video! Busy shipping lanes...such a variety too. Where was this? On our next trip to the U.K. maybe in 2022 it must be put on our agenda.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by Martin555 ( Fleet Admiral)
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    Thank you for the complement Stephen.

    Martin555.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by stevedownunder ( Midshipman)
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    Hi Martin555,
    Thanks though I don't completely agree that what I am doing is quote "way above my skills" they are simply a different set of skills, you are a very skilled model maker in my opinion.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    2 months ago by Martin555 ( Fleet Admiral)
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    Hi Stephen,
    Although i find steam power very interesting unfortunately it is way above my skills.
    I am following this blog as i am learning more about steam.
    Keep it coming.

    Martin555.
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Part 12.

    I decided to leave planking the deck and making the bulwarks until later, my main reason is ease of positioning equipment when I have clear sight through the deck beams, this turned out to be a really good idea.

    Back to the steam engine. The following steam engine issues happened over a number of years, not necessarily in order with building of the hull as presented in these articles.

    To recap from part 2; first run showed that it took a very very long time to raise steam and once it did raise steam the engine didnโ€™t run for long before the pressure dropped.

    I only ran the engine three times before I had large leaks mainly between the cylinder port and distribution block faces, the leaks being so big the engine wouldnโ€™t run properly!

    I wasnโ€™t sure why I was having these problems, I thought I had made the engine as accurately as I could.
    I pulled the engine apart and found that the distribution block now had slop in the bearing for the cylinder pivot.

    I was puzzled that this should occur with so little running time, at that point I thought either the pivot pin or bearing hole wasnโ€™t square to there respective face.
    I couldnโ€™t understand how this could happen, but I couldnโ€™t think of any other reasons either.
    So I set up the cylinder in a 4 jaw independent chuck, not easy to do, then took a skim off the face, then repeat again for the other cylinder.

    Next I setup the distribution block on a face plate and bored the bearing hole out this would ensure an absolutely perpendicular hole, then made a bronze bush and pushed it in.

    I reassembled the engine with high hopes only to have a similar result after a few runs, I had huge leaks again, I started to think this steam thing might not be for me.

    Then while I was exhibiting my partly built drifter at a model boat show at the Queenscliff Maritime Museum in Queenscliff a bay side township in Victoria, Australia, I met a guy who had built 2 of the same engines that I had.
    While talking he asked me how my engine was going and I told him not so good.
    He told me that one of his engines ran beautifully while the other was terrible like mine.

    He then proceeded to tell me how he over came the problem also saying he would send me some photos of his modification, photos eventually arrived of his floating cylinder retaining device ( I donโ€™t really know what to call it ).

    I proceeded to copy his modification along with another modification on the cylinder faces to under cut between the pivot pin and steam port, reducing surface area.

    Then for the second time I set the distribution block on a face plate and bored the pivot hole out this time for DU Glacier bushes.

    I re-assembled the engine then put it aside, with the hope those problems were fixed.

    Thanks for having a look.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    So do I Peter & Mike.
    You know what they say 3rd time lucky.
    Cheers,
    Stephen.
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    3 months ago by stevedownunder ( Midshipman)
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    Thanks Martin.
    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by mturpin013 ( Commodore)
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    I hope it works out for you
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by MouldBuilder ( Commodore)
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    Nice bit of engineering. Hope the results are good.
    Peter.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by Martin555 ( Fleet Admiral)
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    Nice looking engine Stephen,

    Way to complicated for me, but your engineering skill have proved to be excellent and you have made a lovely little engine.

    Well done.

    Martin555.
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    ๐Ÿ“ Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Part 11.
    I got a bit excited and posted more photos than than were required in the last post, mainly referring to deck beams.

    So here is the discription.

    I made up a cardboard template for the deck beam camber and using some Kari pine made up a batch of deck beams.

    Using my newly acquired Byrnes Table saw I cut and fitted the beams placing them in reference to major deck openings.

    The width of deck beams is close to scale, though the number is not correct. Depth of these beams is not to scale due to a desire to stiffen up the removable structure.

    Then my focus turned to how I was going to attach the removable section and how I was going to secure it.

    What I came up with was a system of cams and push rods, having 4 sliding pins on each side for a total of 8 pins.

    To achieve this required a lot of components, once again taking a lot longer than first thought.
    The main motivation for this design was my distaste for removing 6 to 8 screws each time I wanted to remove the top section, I wanted to just turn 2 screws and then be able to remove the top section.

    You may ask why so many pins, in my opinion the top section is not a stable structure by it self, if it is not held in place properly it will move out of shape over time, hence all the pins to hold it in place.

    When I was making the components, in the back of my head was if any of this fails removal will be difficult in the extreme. With this in mind all rotating elements had bushings.
    Pivots for linkages on the pins were โ€œrivetedโ€ using a watch makers staking set to ensure no pivot falls out.

    Locating pins were also fitted to ensure alignment when putting the top on, hopefully eliminating possible damage to planking when replacing the top section.

    The inside was given a couple of coats of epoxy resin. I am happy to say that very little epoxy ran through to the other side as there were not many gaps in the planking.

    I then installed the pin guides and sockets, not relying on an adhesive alone I used small brass wood screws to mechanically fix the components.

    I started with the pin guides mounting then to the removable section.
    Then aligning the sockets using a tight fitting pin together with a spacer between the two I initially glued the sockets in position with Milliput once set I screwed them in just to be sure.

    Thanks for looking in.

    Cheers,
    Stephen.
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    3 months ago by RNinMunich ( Fleet Admiral)
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    "I'm tempted to cut the top of one of my boats just so I can fasten it back on. Using your design of course."
    I've said it before, and I'm forced to say it again๐Ÿ˜‰
    You don't have to be mad to build model ships, but it helps!
    You've just proven the rule Mike๐Ÿ‘
    Welcome to the club๐Ÿ˜
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by RNinMunich ( Fleet Admiral)
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    "A 'locked and loaded' indicator would be quite cool though."
    You know Rob I've often wondered how you load a locked weapon!?
    Didn't have that problem with the old Bren gun, just a sore shoulder๐Ÿค”
    ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Thanks redpmg.
    Cheers,
    Stephen.
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    3 months ago by redpmg ( Captain)
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    What an incredible detailed build all round - love the mechanism
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Thanks Peter,
    Yeah around 6 months of spare time in my estimation.
    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Thanks JB, yeah or a nut case!!!
    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Thanks mturpin013,
    I like the sentiment, though I don't think it is over the top more what is needed for reliable operation into the future.๐Ÿ˜

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Thanks Rick.
    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Thanks Doug.
    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Thanks Rob,
    Not sure if I would say I really enjoyed making the mechanism though I am very happy I did go to the effort because it is so easy to undo now.
    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Thanks Colin,
    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Thanks Martin555,
    Funnily enough the mechanism worked without any dramas, I am happy to say it operates smoothly.

    Cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by MouldBuilder ( Commodore)
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    Very clever piece of engineering. Must have taken a while.
    Peter.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by jbkiwi ( Admiral)
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    Beautiful job Steve, you are obviously a perfectionist !๐Ÿ‘๐Ÿ‘AAA stuff!
    JB
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by mturpin013 ( Commodore)
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    That's my kind of mechanism, totally over the top nice and complicated, takes a lot of thought and manufacture, BUT, does the job to perfection.
    Fantastic.๐Ÿค“
    I'm tempted to cut the top of one of my boats just so I can fasten it back on. Using your design of course.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by robbob ( Vice Admiral)
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    Hi Stephen.
    Thanks for the clarification.
    A 'locked and loaded' indicator would be quite cool though.๐Ÿ˜Ž
    Rob.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by stevedownunder ( Midshipman)
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    Hi Rob,
    Nice idea, though the wiring is more for other things later on.
    I discovered I didn't have any photos of the assembled mechanism and took some yesterday.

    cheers,
    Stephen.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by Newby7 ( Captain)
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    Putting 6 screws to hold the top in place would have been my way.I'm envious of your build and design to be able to hold the top in place.Wonderful write up on doing so.
    Rick
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by robbob ( Vice Admiral)
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    I have one more question Stephen
    There's a twisted pair of wires that look as if they terminate on the last locking pin and socket, will this be to close a circuit that indicates that the mechanism is fully engaged and locked? ๐Ÿค”
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by RNinMunich ( Fleet Admiral)
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    Bind moggling๐Ÿ˜ฎ
    Five star work Steve๐Ÿ‘
    โ˜€๏ธโ˜€๏ธโ˜€๏ธโ˜€๏ธโ˜€๏ธ
    ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by robbob ( Vice Admiral)
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    Hi Stephen.
    That's a beautifully engineered mechanism, well thought out and executed ๐Ÿ˜€๐Ÿ‘.
    I would normally advocate the 'KISS' principle if the need to remove the part was on an infrequent basis but I quite expect you enjoyed the challenge of making the locking system anyway. It also follows that with your professional skills in your working life this might be an easy undertaking.
    Great work....looking forward to seeing more.
    Rob.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by Colin H ( Rear Admiral)
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    Now thats a well engineered piece of modelling, obviously executed by a professional.
    Superb fittings and assembly, and it looks like it's going very well.
    Keep up the great work shipmate.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Scratch built, Working Steam powered Drifter trawler LT100, to 1:24th scale.
    3 months ago by Martin555 ( Fleet Admiral)
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    Hi Stephen,
    WOW that is quite a complicated system.
    I bet you had a lot of fun getting that to work.

    As i have said in the past there is a lot of work that is done in model making that is very rarely seen when the model is complete.

    Having said that she is really coming along extremely well.
    Keep it up.

    Martin555.
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