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










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    32 Posts 86 Comments 49 Photos 256 Likes
    Most recent posts shown first   (Show Oldest First) (Print Booklet)
    ๐Ÿ“ Under Sail
    6 hours ago by Hillro ( Midshipman)
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    At the start of the build using drawings from model boat mag. I researched this boat and found the first boats were purely sail driven.
    The hull dimensions and design has not changed because of the introduction of gasoline engines therefore through a suggestion of a watcher have been working on an alternative superstructure changing my boat to sail.
    I sent for a set of plans for the actual boat from Brown,Son and Ferguson Ltd, Glasgow.
    These included sails and rigging plans.These had to be rescaled to suit my hull
    Attached photographs show my attempt at sails. These are not finished but I have included wired luff ropes served all the way. Still to fit crinkles, etc.

    I am hoping to sail under sail but I think it will have to be windward and then motor back. This because dipping lug sail arrangement is difficult to arrange using rc control.

    Unless any of you know something different.

    just by coincidence Model Boats Mag August 2020 has details of a kit build Zulu.
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    ๐Ÿ’ฌ Re: Under Sail
    4 hours ago by Nerys ( Commodore)
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    Looks as if you are making a very good job of the sails. Your only problem would be dipping the main yard around the fore mast as I've said before, but you have answered that one in saying that you will motor to windward, probably only necessary on one tack, and sail when you can. Nice coincidence there being the article in Model Boats, wasn't it. Best of luck as you proceed.

    Cheers, Nerys
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    ๐Ÿ“ Final Assembly
    30 days ago by Hillro ( Midshipman)
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    Putting together all the parts made earlier.
    Marked up the boat ID , and name plates.
    Now just need a crew, and a pond to sail on.
    I heard the pond I use is weed covered at the moment so it could be the canal.
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    ๐Ÿ’ฌ Re: Final Assembly
    30 days ago by ianed57 ( Midshipman)
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    Well done, a very smart build. I'm sure we are all looking forward to some photos on the water, maybe even a video.

    Ian
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    ๐Ÿ’ฌ Re: Final Assembly
    30 days ago by Martin555 ( Fleet Admiral)
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    Very nice, you have done a great job.
    Well done.

    Martin555.
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    ๐Ÿ’ฌ Re: Final Assembly
    29 days ago by Newby7 ( Sub-Lieutenant)
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    Job well done I like the finish work.
    Rick
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    ๐Ÿ“ Fish Scuttles
    30 days ago by Hillro ( Midshipman)
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    Made out of brass sheet, and soldered up.
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    ๐Ÿ“ Boat Electrics. Wiring Diagram
    1 month ago by Hillro ( Midshipman)
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    Just thought I would record how I wired the boat.
    Not sure how the photo will turn out.
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    ๐Ÿ’ฌ Re: Boat Electrics. Wiring Diagram
    1 month ago by Colin H ( Commodore)
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    Looks good, but shouldn't fuses 3 and 4 be rated the opposite way??
    Nice drawing and easy to follow.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Boat Electrics. Wiring Diagram
    1 month ago by Martin555 ( Fleet Admiral)
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    Hi Colin,
    I was just about to say the same.

    Martin555.
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    ๐Ÿ’ฌ Re: Boat Electrics. Wiring Diagram
    1 month ago by Ianh ( Warrant Officer)
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    Why don't you 'parallel' the batteries and then the power would be through one fuse๐Ÿ˜Š๐Ÿ˜Š
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    ๐Ÿ’ฌ Re: Boat Electrics. Wiring Diagram
    1 month ago by hecrowell ( Petty Officer 1st Class)
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    Exactly the info that I have been thinking about.
    Good post!
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    ๐Ÿ’ฌ Re: Boat Electrics. Wiring Diagram
    1 month ago by Hillro ( Midshipman)
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    You are correct, The boat is not fused that way.
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    ๐Ÿ’ฌ Re: Boat Electrics. Wiring Diagram
    1 month ago by Hillro ( Midshipman)
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    yes I could have paralleled up the batteries but I had a spare way so I would use it as an easy isolation point.
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    ๐Ÿ’ฌ Re: Boat Electrics. Wiring Diagram
    1 month ago by RNinMunich ( Fleet Admiral)
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    "yes I could have paralleled up the batteries but"
    If I'm not very much mistaken, or the diagram is mislabelled, that is exactly what you have done Hillro!
    Both positives are connected via the fuses and both negatives via your negative rail.
    If you MUST do that then you have to make sure that both batteries are identical.
    That doesn't mean just the lables!
    It means that they both must have the same actual voltage and state of charge.
    Otherwise the stronger will start to try and charge up the weakest, which can lead to some excessive current and associated heating ๐Ÿ’ฅ๐Ÿ”ฅ๐Ÿ˜ญ
    To prevent that Schottky power diodes should be inserted into the + leads of both batteries.
    A simple and neat way to do that, if you don't want to do the soldering yourself, is the Parallel Connection Board from Action Electronics (Component Shop).
    https://www.componentshop.co.uk/p103-parallel-power-board.ht...
    And yes, F3 and F4 are back to front๐Ÿ˜ฎ
    Cheers, Doug ๐Ÿ˜Ž
    https://www.componentshop.co.uk/p103-parallel-power-board.html
    ๐Ÿ”—
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    ๐Ÿ“ Bath test.
    1 month ago by Hillro ( Midshipman)
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    Did this when the better half was out!!
    Very pleased with the stability of the boat, no fear of capsizing.
    Also was very surprised at the performance of the prop. I thought it was quite small for the size of boat but I think it will give a good turn of speed in the pond.
    Very happy boy!
    Bath Test
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    ๐Ÿ’ฌ Re: Bath test.
    1 month ago by Nerys ( Commodore)
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    Pleased to hear you are satisfied with your Zulu's stability, looking at her from above, in the bath, I can see why you are pleased with her. Hopefully we will see pics of her on the lake somewhere before long, I'm looking forward to it.

    Nerys
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    ๐Ÿ’ฌ Re: Bath test.
    1 month ago by figtree7nts ( Vice Admiral)
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    Hi Hillro,

    Great bathtub test!
    I can't wait to see her Maiden Voyage Video!

    Cheers, Ed
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    ๐Ÿ“ Installing the electrics
    1 month ago by Hillro ( Midshipman)
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    Spent some time thinking about the fitting of batteries,fuses, esc, and lighting circuits.
    I made up two battery boxes, one for either side of the drive motor. These were mounted but still allow for removal of the batteries, with a bit of fiddling. Recharging is accommodated by plugs on battery leads.
    The fuse board (from Halfords) is mounted in the forward access hatch with a common negative busbar.
    On the positive side two fuses for the battery, one for the speed controller (esc)and another for the lights.
    The fishhold holds the on/off switch,and speed controller which also supplies power to the radio receiver which is installed in the rudder compartment.
    This is to allow the radio aerials to be put in the wheelhouse if required.
    Dry run test went well.
    Oh I did do a float check in the bath,with batteries mounted and had to add some weight to the bows.
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    ๐Ÿ“ Ship's Boat
    2 months ago by Hillro ( Midshipman)
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    The intention was to make the boat from wood from the scrap box. I made the hull mold as in the photographs however when trying to make the ribs, they kept breaking. Tried various methods and woods with no great success so I turned to plastic. The result I am very pleased with.

    I would be very happy to hear on techniques to build a ship's boat in wood.
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    ๐Ÿ’ฌ Re: Ship's Boat
    2 months ago by Martin555 ( Fleet Admiral)
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    Hillro,
    I think your ships boat has come out very well.
    Sorry i cannot help with wood techniques as i mainly use plastic myself.

    Martin555.
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    ๐Ÿ’ฌ Re: Ship's Boat
    2 months ago by Nerys ( Commodore)
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    Your ship's boat looks fine to me. I always work in wood, but have found building a dinghy/ships boat difficult, so have used good quality card for the planking but a wood keel, stem, transom and thwarts. I found it quite easy and a couple of coats of paint on completion makes it quite strong.

    Cheers, Nerys
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    ๐Ÿ“ Mast and rigging
    2 months ago by Hillro ( Midshipman)
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    It's been a wee while since the last post but I have not been idle.
    Fitted the back to the wheel house and fitted all the handrail, etc.
    Made up mast and spars from dowel tapered by sanding, various hardware fitting from brass wire and sheet.
    Don't have a sewing machine, so called up a favour from a friend to make the sail. Fitted the eyelets myself. Assembled the mast, spars and sail. This was a very fiddly task.
    Have arranged the mast head lighting with guide wires. This will be used to power up the lanterns. This was a deviation from the plans however I think a practical solution to allow lanterns to light up.
    Still to fit a few things like water tank, skylights, etc.
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    ๐Ÿ’ฌ Re: Mast and rigging
    2 months ago by Martin555 ( Fleet Admiral)
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    WOW!! you have been busy.
    That looks really good.
    A fiddly job but extremely well done.

    Martin555.
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    ๐Ÿ’ฌ Re: Mast and rigging
    2 months ago by RNinMunich ( Fleet Admiral)
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    Superb work Hilly,
    and an excellent inspiration and how to guide for my Gina 2 fish cutter restoration๐Ÿ‘
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ“ Bridge Assembly
    2 months ago by Hillro ( Midshipman)
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    Put together with stuff from the scrap box. Although you will not see a lot inside the bridge when complete, I had a go at carving a seaman,and fitting a chart table. Still have to make and fit handrails, life belts, etc.
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    ๐Ÿ’ฌ Re: Bridge Assembly
    2 months ago by figtree7nts ( Vice Admiral)
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    Hi Hillro,

    I really like the Pilot House!
    It looks great!

    Cheers, Ed
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    ๐Ÿ’ฌ Re: Bridge Assembly
    2 months ago by Martin555 ( Fleet Admiral)
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    You have done a great job.
    The good old scrap box certainly comes in handy.

    Martin555.
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    ๐Ÿ’ฌ Re: Bridge Assembly
    2 months ago by RNinMunich ( Fleet Admiral)
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    Nice solid looking Wheelhouse that Hillro๐Ÿ‘
    You did a good job on the seaman, quite the little sculptor aren't we!
    Love the 'chessboard' lino floor as well๐Ÿ‘
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Bridge Assembly
    2 months ago by MouldBuilder ( Captain)
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    Really nice job.๐Ÿ‘
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    ๐Ÿ’ฌ Re: Bridge Assembly
    2 months ago by Nerys ( Commodore)
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    Very impressive wheelhouse, even if you can't see much of it when she's finished, you have the satisfaction of knowing it's there. Very well done.

    Cheers, Nerys
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    ๐Ÿ“ Steering Video
    2 months ago by Hillro ( Midshipman)
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    View Video
    First video loaded , hope it works ok.
    The Mighty Zulu, Steering Servo Test
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    ๐Ÿ’ฌ Re: Steering Video
    2 months ago by Martin555 ( Fleet 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
    2 months 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
    2 months ago by Hillro ( Midshipman)
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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
    2 months 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
    2 months ago by Ianh ( Warrant Officer)
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    View Video
    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
    2 months 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
    2 months ago by Ianh ( Warrant Officer)
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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
    2 months 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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