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*STOP PRESS* Coronavirus. A lot of Clubs have already cancelled all activities. Check carefully before you plan any travel

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CANCELLED because of coronavirus. Papplewick Pumping Station, Nottingham, Sunday 12th & Monday 13th April
CANCELLED because of coronavirus. Bournville Sub Day, Sunday 10th May 2020

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(CANCELLED) Submarine, Boating & Sailing Weekend, Norwich MBC, Weekend of 25,26th July

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Model Boat Convention, Haydock Park (Cancelled this year)

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CANCELLED. Bournville Sub Day, Sunday 13th September

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(CANCELLED) Club Submarine Regatta, Furness MBC, Barrow in Furness, Sunday 20th Sept 2020

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Latest topics

» openLRS and 2.4 Ghz and Submarines
Walther Type XVllB EmptyTue Sep 22, 2020 9:52 am by david f

» Italian CB class from WW2
Walther Type XVllB EmptySat Sep 12, 2020 10:30 am by david f

» Last event cancelled for 2020
Walther Type XVllB EmptySat Sep 05, 2020 10:31 am by david f

» Simple telemetry system for openLRS (on 458Mhz)
Walther Type XVllB EmptySat Aug 29, 2020 1:53 pm by david f

» John Lambert Plans
Walther Type XVllB EmptyThu Aug 13, 2020 11:51 am by david f

» Piston Tank - Depth Control (Paper by Wolfgang Baumann & Helmut Huhn)
Walther Type XVllB EmptyThu Aug 06, 2020 9:17 am by david f

» Krick Type Vll B Wiring and build photos
Walther Type XVllB EmptyTue Jul 28, 2020 8:02 am by Deep Diver (Fred)

» New Gyro On The Market
Walther Type XVllB EmptySat Jul 11, 2020 9:34 pm by timgarrod

» PIC and Arduino microprocessors
Walther Type XVllB EmptyThu Jul 09, 2020 10:59 pm by timgarrod

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    Walther Type XVllB

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    ajg141
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    Walther Type XVllB Empty Walther Type XVllB

    Post  ajg141 on Tue Nov 22, 2011 11:22 pm

    I have recently acquired from a friend a fibreglass hull for the Type XVllB. The length of the bare hull is 82 cm and the height 11cm minus conning tower. Quite apart from the slimness of the early Walther’s my first problem is how to remove the fibreglass flange shown in the photos. The hull is in 2 horizontal halves as can be seen and these need to be joined before cutting the access cover. The sparse instructions suggest using a rasp to remove the excess flange but doing this by sanding the 4mm flange away horizontally so that you end up with 2 flush halves that can fit neatly together.
    Can anyone suggest an easy way of doing this please?
    Suggestions would be appreciated bearing in mind my aversion to fibreglass dust and lack of a vast belt sander!

    Andrew


    Walther Type XVllB Walthe10

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    ajg141
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    Walther Type XVllB Empty Re: Walther Type XVllB

    Post  ajg141 on Tue Nov 22, 2011 11:29 pm

    Cross section photo showing the flange.

    Walther Type XVllB Walthe19
    nigele(ADMIN)2
    nigele(ADMIN)2
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    Post  nigele(ADMIN)2 on Tue Nov 22, 2011 11:31 pm

    Two easy ways,angle grinder with a 40 grit disc need a steady hand for this allso very dusty,second way sanding block with 80 grit production paper,hold the block parallel to the hull and just keep sanding after a time the flash will become very thin when it does snap it off.
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    ajg141
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    Walther Type XVllB Empty Re: Walther Type XVllB

    Post  ajg141 on Wed Nov 23, 2011 10:30 am

    Thanks for those ideas Nigel. I think I'll give the sanding block suggestion a try. It certainly sounds a more suitable method bearing in mind my shaky hands - and my lack of an angle grinder!
    Andrew
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    ajg141
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    Post  ajg141 on Tue Dec 20, 2011 9:45 pm

    Some minor progress - it's awfully cold in the garage! The 2 halves of the hull are now sanded down (courtesy of a friendly coachbuilder) and have been taped together. The hull holes are being opened out and some filling sanding has started on the conning tower. 2 ply bulkheads have been made and an inner deck with 2 access hatches. The rear bulkhead has been drilled to take the MMB motor mount and shaft. The control rod seals need to be positioned next. The hull halves are still to be glassed together and this will need to be done before the glassed bulkheads etc are fitted as I need to ensure the propshaft lines up properly. There is very little room to work inside the wtc as you can see from the photograph. The total width is under 2" and the boat's overall length is 35". Progress is slow!

    Andrew

    Walther Type XVllB Walthe24

    david f
    david f
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    Post  david f on Wed Dec 21, 2011 9:21 am

    Looking very good. She has nice lines.

    BTW Andrew , you may know already but Brian (The Editor) has just joined you "North of the Border."

    David
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    Walther Type XVllB Empty Re: Walther Type XVllB

    Post  Tom(ADMIN) on Wed Dec 21, 2011 12:38 pm

    Nice Andrew, an usual subject.
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    ajg141
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    Walther Type XVllB Empty Re: Walther Type XVllB

    Post  ajg141 on Fri Mar 23, 2012 5:39 pm

    Now almost finished. Some tank testing to be done now before venturing to the pond.

    Andrew

    Walther Type XVllB Walthe34
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    Tom(ADMIN)
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    Post  Tom(ADMIN) on Fri Mar 23, 2012 5:44 pm

    Good grief, Andrew....that was a quick build! That looks really nice...hope it performs well for you.

      Current date/time is Tue Sep 29, 2020 2:28 am