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    1-35 Scale Schenllboot By TeeJay
    by teejay πŸ‡¬πŸ‡§ ( Petty Officer 1st Class)
    πŸ“£










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    3 Posts 24 Comments 31 Photos 3 Likes
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    πŸ“ fuses
    8 months ago by teejay ( Petty Officer 1st Class)
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    Schnellboot Radio control setup

    3 Mtroniks M400 marine Motors
    (running at 12V, at maximum efficiency it will run at around 20,000 Rpm and pull around 4 amps. Start-up current depending on prop size (30mm on 4mm prop shaft) would be around 10amps (6-12 volts)
    3 Mtroniks Viper marine 15 ESCs connected using Mtroniks W-tail mixer with 10-amp fuses used between ESC and battery’s
    Batteries are
    1 Carson 2100 MAH High performance NiMH battery pack
    2 Vanquish 22oo MAH NiMH battery pack
    All Batteries are 7.2 V
    I have tested the set -up all the ESC are synchronised, and all seems well on the bench but when I try it in test tank all the fuses blow, and I check all connections and there are not short circuits on the connections or switches can anyone help

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    πŸ’¬ fuses
    8 months ago by Donnieboy ( Warrant Officer)
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    When I had a Schnellboot it was 1/31 scale and I used Speed 400's.My esc's were 50 amp.I had no problem.Once you put the boat in the water there is more resistance on the props.With that there is more current draw.Maybe look into getting a higher rated esc.

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    πŸ’¬ fuses
    8 months ago by Donnieboy ( Warrant Officer)
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    Before going to the expense of new esc's.Check the current draw when the boat is in the water.I should have mentioned that sooner.

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    πŸ’¬ fuses
    8 months ago by RNinMunich ( Fleet Admiral)
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    Hi TJ,
    Donnie is right. When in the water maybe the start-up surge current briefly exceeds 10A. Especially if you shove the throttle straight to the end stop!
    So try 15A fuses - the ESCs should stand a 50% overload for a few seconds - and open the throttle slowly while watching the current drawn per motor.
    Cheers, Doug 😎

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    πŸ’¬ fuses
    8 months ago by teejay ( Petty Officer 1st Class)
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    Thanks Doug and Donnie tried the 15 amp fuses all went well the boat is ready for the lake.
    and thank you all for the help and advise during this build over the past year I really don't think I could have managed it without your input.
    the next stage is going to be replacement of the brass rudders and some work on weight saving and some pic on the RC system. and making a suitable box for transportation. that will kept me occupied till the better weather. So thank you all and have a merry Christmas and happy new year and a good hangover cure and may your god be with you in all your sailing

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    πŸ“ 1-35 Scale Schenllboot By TeeJay
    10 months ago by teejay ( Petty Officer 1st Class)
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    Hi all for the second blog report on the schnellboot I am going to go over the rudder a propeller shaft assembly in more detail.
    The first stage was to make the rudders which were made of brass ,and having taken note of what has been said about the increase in size needed for the kit by other members I have increased the size of the rudders by 50% so that they have more effect and hopefully the boat will be more agile .I fitted 3mm treaded rod on to the rudder and in a 4mm flanged tube to reinforce the brass rod.
    The second stage was to make and fit 5mm flanged tube in the location for the rudders in the boat, these were made to be above the water line and will be sealed in place to reduce the possibility of leaks. These were fitted to a rudder platform inside the boat which was fitted to the kit moulding for the rubbing strip that runs the length on the boat and secured by making resin blocks which were fitted with computer extension nuts. which were then superglue in place to secure the rudder platform. The rudders were then fitted in place and held in position with the tiller collars which were made from 8mm rod and fitted the tiller arms and locked in place with 3mm computer screws and ni-lock nuts, a connecting plate was then fitted to connect the three tillers together, I also fitted rubberised washers to seal the rudder tubes.
    The third stage was to make the propeller supports. The centre support was a direct copy of the kit part made of brass and fitted to the kit with a plate and screws (this plate and the rudder plate were made from galvanised steel) and will sealed with resin after the I test the boat for leaks.
    The port and starboard supports were made by taking the kit parts and cutting them in have along the joint line or mould seam this gave me a template ,which I used to make cross-section segments but I did alter the template by increasing the boss diameter to 10mm and extending the support legs so that the finished support could be fitted through the hull (the picture of these show the mk1 version where I forgot to allow for the 4mm prop shaft which has a 6mm tube) any way the boss of these segments were drilled out with a 7mm drill and a length of 7mm brass tube fitted through the boss to assemble the segments, all of which were coated in soldering flux at this stage of the assembly which were riveted at both ends to hold it all together during soldering, after soldering the supports were then filed to the size and shape to resemble the kit parts as close as possible and fitted to the hull using a superglue and talcum powder mix and then I cast resin around the extensions to secure the prop supports in place.
    The fourth stage is the propeller shaft housing for the centre propeller housing I place a brass rod in a plastic straw and place in position in hull and using resin I sealed the hull with the rod in place this gave me a pilot hole for the centre prop shaft after I removed the brass rod. For the port and starboard shafts I used the kit parts which had hole place when assembled, this when I reinforced the housings ,the centre housing I glue 2mm of plasticard on each side and for the port and starboard I made a brass tube shroud which covered the housings which left gaps between the kit part and the brass which was filled by casting resin in the gap this increased the diameter to 10 mm so that there were little chance of breaking throw with the drill and finished these off by fill-in the outside with body filler and sanded to shape and finish . I then drilled through the pilot hole in the housings using very long extended drills and a wheel brace ( if I had use a power drill the heat would have melted the plastic of the kit and may have caused problems) I drill the shaft housings out 6mm them filed them out with 6mm file so that I could insert a length of 6mm brass tube. After all this was done I fitted a flanged bush made from 7mm tube and 2mm brass plate turned to 11mm to the ends or the propeller shaft housings.
    And now it is time I must ask for some help could anyone advise me on the length of propeller shafts, I know I can use a 300mm shaft for the centre shaft, but port and starboard will have to be longer. and I also need advice on selecting the motors, I want to use 4mm prop shaft with 35mm propellers. Any opinions welcome.

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    πŸ“ 1-35 Scale Schenllboot By TeeJay
    10 months ago by teejay ( Petty Officer 1st Class)
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    Hi all this is my first blog, last year I post my intention to do a project about an RAF D boat that my Father served on and as a precursor to that build That I was going to do this S/E boat as the hull design is shared by both, and as plastic kit modeller the kit great the first stage was to put together the decks and superstructure as normal, with the exception of all the bits that would be easily broken as most kit aircraft modellers aerials and guns tend to brake ,so long ago I got into the habit of making these out brass rod or bar using a mini drill and a set of needle files, holding the drill in my left hand and the files in my right, when started this I saw the number of stanches I needed so I came across this little beauty a mini bead lathe it is a great bit of kit and not expensive less than Β£50 and plenty of types and accessories available so all the stanches aerials hand rails, gun rails, horn, and some of the components for the rudder and tiller were made on this lathe. so good time being had in my first radio control boat. the next post will show all the parts for the rudder/tiller setup ( I have reposted blog because I think I did not do it properly first time round)

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by teejay ( Petty Officer 1st Class)
    Flag
    Dear all for those following this blog, due to having a bit of a problem getting out of the optician yesterday and the overs zealous help I may not be able to post any for a couple of weeks . the helper was trying help out the shop and the throttle on the scooter at the wrong moment ,I did a sort of barrel role and hit the pavement at great rate of knots, I am back on my back till the pain subsides. sorry guys.

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by RNinMunich ( Fleet Admiral)
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    Not quite sure how you managed a 'Ground Loop' with a scooter TJ !?😲
    but get well soon. All the best Doug 😎
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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by Colin H ( Lieutenant Commander)
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    Some help!!!! Sounds painful, get well soon, all the best, Colin.
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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by teejay ( Petty Officer 1st Class)
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    Yep quite spectacular said the wife, as to the ground loop. I was half way getting up and out of the thing when the good Samaritan tried to take hold the handle bar ,and in the process also grabbed the throttle, such is life.
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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by Rookysailor ( Chief Petty Officer 1st Class)
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    Hi TeeJay, just a follow on from the question from Doug earlier,
    'where did you get that great little lathe,? would be very interested for one for myselfπŸ˜‰


    cheers, PeterπŸ‘

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by teejay ( Petty Officer 1st Class)
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    Hi Rookysailor I got from site called Banggood great peace of kit.
    but I would advise you to type in mini lathe in your search engine and have a good look around.
    And also look for one that has a tail stock that you can put a chuck in ,
    I bought mine separately and the tail stock have be altered a bit.
    no big problem just inconvenient .

    The site also have a mini milling machine that bought,not to bad if you take your time. I will post a pic when I can hobble out to the garage

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by teejay ( Petty Officer 1st Class)
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    Hi Rookysailor PS you my find that the delivery is about six weeks from Banggood a bit long but well worth the wait.

    sailor
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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by RNinMunich ( Fleet Admiral)
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    Mornin' Rooky, Take a shufti here
    https://www.google.com/search?q=mini+lathe&ie=utf-8&oe=utf-8...
    I finally settled on a mini Proxxon FD 150/E, 3 times the price of TJ's but no problems with tailstock / chuck etc. Got both live and dead centres as well. πŸ˜‰ The oil / swarf pan is an optional extra, can highly recommend it to keep the 'mess' under control 😁
    Happy hunting, cheers, Doug 😎
    https://www.google.com/search?q=mini+lathe&ie=utf-8&oe=utf-8&client=firefox-b
    πŸ”—
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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by captaindoug1 ( Leading Seaman)
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    when I built mine my outer prop shaft where just a bit longer to get pass the centre motor, I then used 385 motors and found that it runs great, used Action speed controls and mixers

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by Rookysailor ( Chief Petty Officer 1st Class)
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    Evenink Doug, Many thanks for the link, but no mention of a Proxxon, but googled that and found your FD 150/E, best price so far is £400.00 gbp. The major problem is I do not know one end of a lathe from the other😱, I do have friends with lathes who I could pester...but don't want to be a pest! any good books you can suggest, on learning the lathe😊.

    cheers Peter

    BTW, The proxxon lathe looks like the dogs ......😲

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by RNinMunich ( Fleet Admiral)
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    Hi peter, Wow! Price has gone up since I bought mine!
    But it IS good, I'm very happy with it.
    With the really really cheap ones I'm always a bit sceptical of the fine control, accuracy and concentricity etc. These are even more important when working on very very small parts - aren't we always!?

    Afraid the only book I have on lathe work for model builders is in German.
    Must be similar books over there!? Try searching Amazon.

    BTW: I hope you meant 'The Bee's Knees' and not the 'Dogs Breakfast'! 😲

    Re 'pestering friends'; You CAN'T pester real friends! πŸ˜‰
    I'm sure they'd be very glad to help and advise.
    If not; they ain't friends πŸ€”
    Cheers, Doug 😎

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by Rookysailor ( Chief Petty Officer 1st Class)
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    Will check on amazon Doug, for an idiots book on lathesπŸ˜†,

    I'm sure there are real friends at the club, and I also count you in there, for the help you have been on so many builds.

    really appreciate the help Doug.πŸ˜‰

    Peter

    BTW, I meant the dogs Bo---ks ie The BestπŸ‘

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by RNinMunich ( Fleet Admiral)
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    Should have known Pete, after 30 odd years in Germany my 'street English' must be getting rusty😲 All the best, Doug 😎
    PS I'll check if there's an English version of the book I bought - will let you know.
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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by Colin H ( Lieutenant Commander)
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    Hi there Peter, one book I would like to recommend is the Machineries Handbook it's what I would call the machining bible, it's available on computer disc as well, try your local library they might be able to help. Hope this helps you.
    Cheers Colin.

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by teejay ( Petty Officer 1st Class)
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    Hi all I have been reading the post concerning lathes, my little lathe suits my needs and my pocket its great. I also forty years experience working with manufacturing machines, wood lathes ,bandsaws, milling machines, and metal turning lathes, and more.
    I was also a first aider most of working life,
    And what I would advise for people who have no experience in using any of these type machines weather full size or mini is to get instruction preferably from a time served machinist who have trained apprentice's or a course at further education college.
    I have had to attend three lathe accidents and all were life changing. you can see what I mean if you Google lathe accidents and good look at the images. full size or mini makes no difference

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by Rookysailor ( Chief Petty Officer 1st Class)
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    Thank you Colin for the recommendation of your machining Bible, will check online to see if available, and local library.

    cheers, Peter
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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by Rookysailor ( Chief Petty Officer 1st Class)
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    Cheers Doug, would be great if there is an English version available, as one in German would have been OK some 20years ago, but my German is very iffy now, no-one to talk to ..everybody Ahh,
    it's so easy if you don't use it, you lose it, (old Chinese Proverb).

    schâne Grüße, Peter😊

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by RNinMunich ( Fleet Admiral)
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    Ok Peter, ich schau mal was sich finden lΓ€sst! πŸ˜‰
    Title is "Drehen fΓΌr Modellbauer, Band 1; Das ABC des Hobbydrehers", Author JΓΌrgen Eichart, Publisher VTH Fachbuch.
    Verlag fΓΌr Technik und Handwerk neue Medien GmbH.
    WWW.vth.de
    Alles Gute, Doug 😎

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by RNinMunich ( Fleet Admiral)
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    Heartily agree TJ above all never wear a tie or loose clothing while working with rotating machinery.
    And never ever leave the key in the chuck!
    Remember at school in the metal workshop seeing a chuck key whizz across the room and out the window - without bothering to open it first!
    I thought the teacher was going to have an apoplectic fit.
    Any half decent tutorial book on lathe-work will have a chapter devoted to safety.
    Cheers, Doug 😎

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    πŸ’¬ 1-35 Scale Schenllboot By TeeJay
    10 months ago by RNinMunich ( Fleet Admiral)
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    Sorry Peter, I've scoured the VTH site and no trace of English translations, although they specifically reserve the translation rights! RATS! 😑
    Shame co there's a lot of useful hints, tips and tables in it and it's well illustrated with many photos and drawings.
    Doug

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