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    The Mighty Zulu
    by Hillro ๐Ÿ‡ฌ๐Ÿ‡ง ( Warrant Officer)
    ๐Ÿ“ฃ










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    23 Posts 64 Comments 49 Photos 182 Likes
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    ๐Ÿ“ Steering Video
    9 days ago by Hillro ( Warrant Officer)
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    First video loaded , hope it works ok.
    The Mighty Zulu, Steering Servo Test
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    ๐Ÿ’ฌ Re: Steering Video
    8 days ago by Martin555 ( Admiral)
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    Hi Hillro,
    That is a very clever idea using the flexible tubing.
    Is it posable to drill and pin the tubing to the brass rod just for extra safety.

    Martin555.
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    ๐Ÿ’ฌ Re: Steering Video
    8 days ago by billmcl61 ( Chief Petty Officer 2nd Class)
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    Excellent result๐Ÿ‘, nice and smooth action, great idea with the plastic tubing.

    Bill
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    ๐Ÿ’ฌ Re: Steering Video
    7 days ago by Hillro ( Warrant Officer)
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    hi, the tube is very secure, took a bit of effort to fit over the solder bulbs.
    Could use super glue but i think it secure enough.
    If you can drill 2mm brass rod, you are a better man than me.๐Ÿ˜œ
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    ๐Ÿ’ฌ Re: Steering Video
    7 days ago by RNinMunich ( Fleet Admiral)
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    Hi Hillro,
    "If you can drill 2mm brass rod, you are a better man than me.๐Ÿ˜œ"
    Best done with a flat ended milling bit so it doesn't skid off the rod๐Ÿ˜Š, like a twist drill does๐Ÿ˜ 
    I use my mini milling machine for such jobs, e.g. locating grub screws in a prop shaft. See pic.
    A decent drill press for Dremels (or the like) should do the job, if you can secure the rod in a fixed machine vice.
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Steering Video
    7 days ago by Ianh ( Chief Petty Officer 1st Class)
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    Don't buy an end mill for this try making a "D" Bit from silver steel
    Spare Parts #8 - Making A D Bit Single Flute Milling Cutter
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    ๐Ÿ’ฌ Re: Steering Video
    7 days ago by RNinMunich ( Fleet Admiral)
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    " try making a "D" Bit from silver steel"
    For a 1mm or less bit Ian!?๐Ÿค”
    After you Sir!
    ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Steering Video
    7 days ago by Ianh ( Chief Petty Officer 1st Class)
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    Better yet is to make one out of an old drill bit! Drills very central and can be flat bottomed
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    ๐Ÿ’ฌ Re: Steering Video
    7 days ago by RNinMunich ( Fleet Admiral)
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    Hi Ian,
    I'm sure your suggestion works for larger bit sizes, IF one has appropriate precision grinding tools. Although I have my doubts about modifying a twist drill, especially one of 1mm or so.
    Flat ended OK. But it would then still have only two 'cutting' edges, with sharp end points which tend to dig in and jam.
    1mm end milling bits (Dremel, Proxxon etc) with multiple cutting faces cost not the earth!๐Ÿ˜Š
    Don't quite see how the 'D bit' prevents skidding off a thin hard rod.
    But wadda I know? I'm just a dumb electrickery man!
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ“ steering Servo problem fixed
    9 days ago by Hillro ( Warrant Officer)
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    Good morning Peps.
    Following your advice I have modified a few things.
    A-Put a flex point on the servo linkage to reduce the effect of the non linear drive of the servo. I.e. A bit of flexible plastics hose. I put blobs of solder on the end of the rods to ensure a good fit.
    B The chain hole through the hull , coated it with superglue and when set filed as required for a smooth finish.
    C - Lifted the rudder arms slightly.
    Now running very smooth with no snatching. Woopee!
    The Mighty Zulu, Steering Servo Test
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    ๐Ÿ’ฌ Re: steering Servo problem fixed
    9 days ago by RNinMunich ( Fleet Admiral)
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    Well done Hillro. Works well๐Ÿ‘
    For the final touches I would recommend that you fit round fairleads to the hull breakthroughs as shown in your plan. See attached extract.
    Small brass belt eyelets are good for that sort of thing (drapers shop). I also use them for porthole frames๐Ÿ˜‰
    That should stop the chain accidentally sawing the stern off!๐Ÿ˜ฎ
    Slide plates under the chain to protect the deck finish? 0.5mm brass strip?
    Or a piece of metal foil from one of Martin's marge' tubs??๐Ÿ˜
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: steering Servo problem fixed
    7 days ago by Hillro ( Warrant Officer)
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    Brilliant ideas, keep them coming.
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    ๐Ÿ“ Steering and rudder info
    10 days ago by Hillro ( Warrant Officer)
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    For those interested, I bought a set of plans of the real thing at great expense ยฃ10/plan from a company in Glasgow.
    Photos show the rudder and steering mechanism for the sail driven boat.

    Future plan is to convert the model to sail.
    This may be a step too far but we'll see.
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    ๐Ÿ’ฌ Re: Steering and rudder info
    9 days ago by billmcl61 ( Chief Petty Officer 2nd Class)
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    Hi Hillro,

    Just comparing your model to the plan there, it looks like the rudder attachment point on your model is a wee bit lower, this could be introducing an angle so that the chain links are jumping as they move over the bottom of the hull opening causing that notchieness, if you tried moved the rudder attachment point further up the rudder to take away that angle it might help to smooth the action. Hope that helps.

    Bill
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    ๐Ÿ’ฌ Re: Steering and rudder info
    9 days ago by billmcl61 ( Chief Petty Officer 2nd Class)
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    Oops, just read through the previous posts and saw that Doug had already made that point-sorry Doug

    Bill
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    ๐Ÿ’ฌ Re: Steering and rudder info
    9 days ago by RNinMunich ( Fleet Admiral)
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    No need Bill!
    My post was before Hilly posted the plan excerpts, so I couldn't have made such a comparison๐Ÿ˜‰ I agree with you though.

    Hillro,
    Comparing your layout with the plan:-
    I think your rods are too long and I don't see the guide brackets you have fitted in the plan?
    Having two fixed points means that the rod has no freedom of angular movement to follow the curve of the servo arm. Hence it has to bend and probably binds in the tubes you fitted in the bulkhead. Plus the friction at the hull opening as mentioned below and by Bill.

    Try replacing those short toobs with just round fairleads in the bulkhead, and remove the brackets further aft, to give the rod a chance to pivot slightly on the fairlead.
    That and plastic hawser pipes on the stern should smooth things out nicely (I hope๐Ÿ˜‰).
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ“ Fitting of rudder servo. Test.
    10 days ago by Hillro ( Warrant Officer)
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    Thought I would tryout my idea for steering. Well it seems to work ok but there is a bit of snatching of the chain.
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    ๐Ÿ’ฌ Re: Fitting of rudder servo. Test.
    10 days ago by Martin555 ( Admiral)
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    I like it.
    Will it operate if you attached the chains directly to the servo ?

    Martin555.
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    ๐Ÿ’ฌ Re: Fitting of rudder servo. Test.
    10 days ago by Ron ( Lieutenant Commander)
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    What if you ran a wire though the chain, firm enough wire that could be pushed and pulled? This might take some of the chain slack out of play.
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    ๐Ÿ’ฌ Re: Fitting of rudder servo. Test.
    10 days ago by mturpin013 ( Commander)
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    Looking at the geometry of your set up the snatch may be caused by the brass rods being bent as they are both sliding through two holes and because the servo is a circular movement its trying to bend the rods between the servo link and the first hole.
    Difficult to explain but hope it helps
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    ๐Ÿ’ฌ Re: Fitting of rudder servo. Test.
    10 days ago by Martin555 ( Admiral)
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    As you say Michale,
    A linear servo has a strait push/pull.
    A standard servo has an arc push/pull.
    If that makes sense.

    Martin555.
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    ๐Ÿ’ฌ Re: Fitting of rudder servo. Test.
    10 days ago by RNinMunich ( Fleet Admiral)
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    I agree Mike๐Ÿ‘
    The binding friction is probably causing the rods to momentarily jam and then snap free.
    Elongating the holes into horizontal slots would help to alleviate that.
    Alternatively, replace the rods with multi-strand hawser cable.
    A suitable 1 or 2mm steel cable can often be found in the craft section of garden centres - where I buy mine๐Ÿ˜‰ As seen here in the guard rails of my U25. (Pardon the rude crewman!๐Ÿ˜ฎ)

    I suspect that the curious routing through and around the hull is also contributing to that effect. So I would fit broad, low friction plastic hawser-pipes and glide plates where the chain touches the hull. Try to slope the pipes to minimise the angle the chain has to go through.
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Fitting of rudder servo. Test.
    10 days ago by Hillro ( Warrant Officer)
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    Thanks Guys for all your helpful comments. My objective was to make the steering as close to the real thing.
    This arrangement was used on the early sail driven boats.
    However the plans of the boat and photos of the real thing use a threaded shaft with left and right handed threads.
    A running bush attached to a chain on each section. Therefore turning the shaft tightened one chain and the other slackens.
    Anyway producing this was too difficult.
    I have designed and used a chain drive on a Clyde Puffer. this uses pulleys and tubes to guide the chain
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    ๐Ÿ“ Decks fitted.
    11 days ago by Hillro ( Warrant Officer)
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    Some progress has been made, Decks fitted,etc. Fairly straight forward.You will note that gratings have been made as per the plans but I am not entirely sure what their purpose is. Also the plan show that the gratings are level with the top of the bulwark.
    I have tried to research this with little success however having watched a video on drifter fishing the main hold held the miles of nets, floats and ropes there these gratings held the fish before putting them in the hold through hatches in the gratings.
    Any thoughts out there?
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    ๐Ÿ’ฌ Re: Decks fitted.
    11 days ago by Ron ( Lieutenant Commander)
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    I hope the grating is not open through the deck?


    Traditionally, gratings were made to let light and air into a boat.
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    ๐Ÿ’ฌ Re: Decks fitted.
    11 days ago by Hillro ( Warrant Officer)
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    No, Grating laid on deck
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    ๐Ÿ“ Prop and Rudder fitted
    17 days ago by Hillro ( Warrant Officer)
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    Making and fitting has been a real challenge, Making the brass parts and fitting took a few drills, a bucket of patience, and a lot of searching the floor for dropped bits.
    However it's fitted now, just a wee clean up and painting.
    I have some ideas on how to fit the steering servo, basically keep it the same as the real thing using push rods to pull/push the rudder chains.
    The fitting of the prop was easy enough but had to modify the rudder to stop it fouling the prop.
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    ๐Ÿ“ Ships wheel and skylights.
    23 days ago by Hillro ( Warrant Officer)
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    Made out of the left overs from other projects
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    ๐Ÿ’ฌ Re: Ships wheel and skylights.
    23 days ago by Martin555 ( Admiral)
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    Excellent work.

    Martin555.
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    ๐Ÿ’ฌ Re: Ships wheel and skylights.
    23 days ago by Spock66 ( Petty Officer 1st Class)
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    Now that's what I call excellent
    Well Done.
    Andy
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    ๐Ÿ’ฌ Re: Ships wheel and skylights.
    23 days ago by Skydive130 ( Lieutenant Commander)
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    Satisfying making freebies from the scrap box isnโ€™t it! ๐Ÿ‘๐Ÿ˜‚๐Ÿ‘๐Ÿ˜‚
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    ๐Ÿ’ฌ Re: Ships wheel and skylights.
    23 days ago by Commodore-H ( Chief Petty Officer 2nd Class)
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    Wheel is really nice. Wheels are hard to get right'
    Excellent work!๐Ÿ‘
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    ๐Ÿ’ฌ Re: Ships wheel and skylights.
    23 days ago by MouldBuilder ( Captain)
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    Very nice work.
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    ๐Ÿ’ฌ Re: Ships wheel and skylights.
    17 days ago by Commodore-H ( Chief Petty Officer 2nd Class)
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    I also enjoy making things out of leftovers and general trash. All of models are made mainly out scrap wood.

    I am retired but I used to work. Sometime ago the place where I was working received an instrument in a large wooden box. Much to the chagrin of my colleagues I took the crate home saying I could make something out of it. No one took me seriously thinking what could he do with the useless junk.

    Here is the result, took about a week. I know it's not a boat, just and example of what can be done with a shipping crate. Wood was not the best so just so minimum effort, Grandfather clocks are actually just a stack of three boxes. Took it back to work, when I retired they insisted on keeping it.
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    ๐Ÿ’ฌ Re: Ships wheel and skylights.
    17 days ago by Martin555 ( Admiral)
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    Fantastic clock.
    A great example of recycling.
    It is a shame they insisted on keeping it.

    Martin555.
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    ๐Ÿ“ Steam Capstan
    28 days ago by Hillro ( Warrant Officer)
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    Had to do a bit of research on what a capstan for a fishing drifter like the Zulu would use. The Scottish fishing museum provided some answers. Amazing the provision of power was provided by a stand alone boiler which provided steam to the capstan. Two piston cylinders mounted under the top cover of the capstan provided the rotational power. Before this the nets , up to 2miles had to be pulled in by hand. No brainier for the owner to install this rig.
    My model capstan was made from, bits of wooden blinds, and a bit of patience. I ended making two, just in case.
    Found it quite fun to do.
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    ๐Ÿ’ฌ Re: Steam Capstan
    28 days ago by Martin555 ( Admiral)
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    Nice work.
    Well done.

    Martin555.
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    ๐Ÿ’ฌ Re: Steam Capstan
    22 days ago by Alannicholls ( Able Seaman)
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    Great job. I love the detail, especially the mounting bolts.
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    ๐Ÿ“ Hull and decking
    29 days ago by Hillro ( Warrant Officer)
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    Some further progress,
    Decks made from 2mm plywood. Used biro to marked the planking then coloured red using water down acrylic paint then a top coat of varnish. Normal would have planked on top of deck but don't have any so this will have to do.
    having to modify the stern a bit to allow fitting of the rudder.
    Just waiting for paint to arrive to finish hull. Went to Halford to buy it but it was very busy. Thought better of it and ordered on line.
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    ๐Ÿ’ฌ Re: Hull and decking
    28 days ago by marky ( Captain)
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    Really nice looking deck very nice colour.
    Cheers Marky๐Ÿ‘
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    ๐Ÿ“ Hull Planking -Part Six
    2 months ago by Hillro ( Warrant Officer)
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    Painted inside the hull using resin to ensure it's going to be watertight.
    Started fitting decks, however this highlighted an omission in the construction of the hull. I should have fitted a beam at deck level to enable support of the deck edges. I will have to infill with sections of wood.
    Also I got carried away with the waterproofing and took it too high above the deck line. Have spent ages scraping it off. POOK!!!
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    ๐Ÿ’ฌ Re: Hull Planking -Part Six
    2 months ago by RNinMunich ( Fleet Admiral)
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    "got carried away with the waterproofing and took it too high above the deck line. Have spent ages scraping it off."
    Dunno why you went to all that trouble!
    I would have just sanded it with ca 400 grit, then a light primer coat to give it a key for the top colour coat.๐Ÿ˜‰

    Re deck beams; I have the same problem with the restoration / RC conversion of a badly thrown together Billing Gina 2 fish cutter.๐Ÿค”
    Plus the tops of the bulkheads don't line up like yours do. All odd heights and anglesโ˜น๏ธ
    All together now ...
    "Ooooh ... It all makes work for the working modeller to do ..."
    To the tune of 'The Gasman Cometh'
    "Twas on the Monday mo~rning,
    the gas man came to call,
    I'd painted over the gas tap,
    and it wouldn't work at all,
    ..." etc, etc๐Ÿ˜‚
    Happy snag solving folks.
    Stay safe, Cheers, Doug๐Ÿ˜Ž
    PS Full lyrics of 'The Gasman Cometh' by Flanders & Swan attached in pdf.
    Sing along folks, I'll be listening out๐Ÿ˜
    Original here
    https://www.youtube.com/watch?v=v1dvAxA9ib0
    https://www.youtube.com/watch?v=v1dvAxA9ib0
    ๐Ÿ”—
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