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Bournville June 2nd 2019, 10am
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Norwich MBC Submariners joint Model Boat weekend - 27/28th July

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    My first attempt at building a WTC

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    Kevin D
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    My first attempt at building a WTC Empty My first attempt at building a WTC

    Post  Kevin D on Wed Nov 12, 2014 10:11 pm

    Just thought I would post a few pictures of my first attempt at building a WTC, it's still on the building board at the moment but nearing completion.


    My first attempt at building a WTC Dscn0111

    My first attempt at building a WTC Dscn0113

    My first attempt at building a WTC Dscn0114

    My first attempt at building a WTC Dscn0115

    My first attempt at building a WTC Dscn0116
    salmon
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    Post  salmon on Thu Nov 13, 2014 5:14 am

    Outstanding! For a first attempt, I can't wait until your second one.
    Looks well thought out. What changes do you envision?
    Peace,
    Tom


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    Post  david f on Thu Nov 13, 2014 11:34 am

    That looks really good!

    What material is it?

    David
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    Post  Kevin D on Thu Nov 13, 2014 12:34 pm

    Thanks Tom and David for your kind comments, I'm really pleased with it so far, the real test though will be when it's put in water for the first time !!!

    It's Plexiglass (Acrylic)

    In answer to your question about changes Tom the next one will be Macrolon (Polycarbonate). I bought the Acrylic before checking the posts on the forum about the pluses and minuses of both materials, but fingers crossed it will be ok.

    I'll post more pictures once it's complete.
    John Wrennall
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    Post  John Wrennall on Thu Nov 13, 2014 4:09 pm

    Well done Kevin on your First attempt.

    An excellent looking piece of work.

    May I ask how you will be sealing the end caps?

    John
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    Post  Kevin D on Thu Nov 13, 2014 4:45 pm

    Thanks John for your kind comments.

    Each end cap will have a o-ring which sits between the cap and the end surface of the tube, all the mating surfaces for the various fittings on the end caps will be sealed with sealant or o-rings, the motor shaft has a Simrit type seal, well that's the plan at the moment.

    Did you recognise the solenoid valve, it worked a treat on the test bench, so thanks for supplying that.

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    Post  John Wrennall on Fri Nov 14, 2014 4:00 pm

    Happy to hear that the valve worked ok, I'm sure that I have some more in the bombsite (Garage) if I can find them.

    Once tried VERY SOFT RUBBER O rings on an end cap with plenty of Vaseline, tightened the bolts and the  o ring popped out like a hernia. Now use stiffer vinyl o rings or more often an annulus ring cut from 1mm sheet rubber.

    John
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    Post  david f on Sat Nov 15, 2014 9:44 am

    I note that Ian O also successfully uses rubber sheet like this.

    (Mind you he probably gets it from the same skip that you do, John!)

    David
    John Wrennall
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    Post  John Wrennall on Sun Nov 16, 2014 11:57 am

    Very close David.

    I got some surplus 2mm from the stores before I retired and Ian said he thought it was too thick and gave me some 1mm .
    Not sure of his source but knowing Ian it was probably free/very cheap/good bargain.

    John
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    Post  Kevin D on Thu Dec 04, 2014 5:37 pm

    A few pictures of the completed WTC

    My first attempt at building a WTC Dscn0117

    My first attempt at building a WTC Dscn0118

    My first attempt at building a WTC Dscn0119

    My first attempt at building a WTC Dscn0120
    david f
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    Post  david f on Fri Dec 05, 2014 10:40 am

    Looks really nice, Kevin!

    Now the big question - does it leak?

    David
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    Post  John Wrennall on Fri Dec 05, 2014 10:41 am

    Hi Kevin.

    Your WTC is looking good but I have a question.

    I've located the pump, valve and micro switches but not the ballast tank(s)

    Are you going for tanks external to the WTC?

    John
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    Post  david f on Fri Dec 05, 2014 11:21 am

    Yes indeed.

    I'm very good at missing the major point!

    But that John W never misses a thing!

    David
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    Post  Kevin D on Fri Dec 05, 2014 12:15 pm

    david f wrote:Looks really nice, Kevin!

    Now the big question - does it leak?

    David

    That's something for the weekend!!!
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    Post  Kevin D on Fri Dec 05, 2014 12:34 pm

    John Wrennall wrote:Hi Kevin.

    Your WTC is looking good but I have a question.

    I've located the pump, valve and micro switches but not the ballast tank(s)

    Are you going for tanks external to the WTC?

    John

    As this was my first attempt I based this loosely on the simple RCABS design on the Rogue Sub Works website, link below

    http://www.rc-submarines.net/uploads/3/6/3/4/3634806/diy-rcab.pdf

    I changed the tyre valve for the micro switches and solenoid, the pump will feed a bag external to the cylinder.

    I'll try something a little more technical next time!!!
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    Post  david f on Fri Dec 05, 2014 5:29 pm

    Don't worry, it is looking very good and that is also a nice guide to building WTCs.

    David
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    Post  Kevin D on Wed Feb 18, 2015 3:33 pm

    John Wrennall wrote:Happy to hear that the valve worked ok, I'm sure that I have some more in the bombsite (Garage) if I can find them.

    Once tried VERY SOFT RUBBER O rings on an end cap with plenty of Vaseline, tightened the bolts and the  o ring popped out like a hernia. Now use stiffer vinyl o rings or more often an annulus ring cut from 1mm sheet rubber.

    John

    Hi John,

    I'm busy collecting parts for another project so if you come across any more of those valves I would be interested in another one, if available.

    Kevin
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    Post  bwi on Thu Feb 19, 2015 4:48 pm

    What a beauty Kevin….. congrats.
    grtz,
    Bart
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    Post  Kevin D on Thu Feb 19, 2015 5:38 pm

    Thanks Bart

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