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.Model Boat Convention (Exhibition), 24,25 August

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. Bournville Dive-In (2) MBC, 15th September

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Barrow in Furness MBC regatta and submarine event, Sunday 22nd Sept 2019,10am

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Latest topics

» Thank You To Grantham Model Boat Club
U uPVC class EmptyTue Aug 13, 2019 5:39 pm by timgarrod

» Grantham Car pass
U uPVC class EmptySat Aug 10, 2019 7:56 am by david f

» upgrading the SSY 1/96 ALFA kit
U uPVC class EmptyFri Aug 09, 2019 6:06 pm by merriman

» U3008 brass plaque
U uPVC class EmptyWed Aug 07, 2019 1:04 pm by warspoils

» New Owner of Sheerline Sub's
U uPVC class EmptyWed Aug 07, 2019 9:18 am by david f

» Pinger 3 - Distance measurement (Triangulation, Transponders and Clocks on Board)
U uPVC class EmptyWed Aug 07, 2019 9:12 am by david f

» Assembling the excellent Scale Shipyards 1/96 SSBN, USS Daniel Webster
U uPVC class EmptyMon Aug 05, 2019 5:00 pm by merriman

» John Lambert Plans
U uPVC class EmptyThu Aug 01, 2019 2:03 pm by salmon

» Norwich MBC Submarine, Boating & Sailing Weekend, 2019
U uPVC class EmptyWed Jul 31, 2019 11:37 am by david f

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    U uPVC class

    david f
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    Post  david f on Sun Dec 05, 2010 11:23 am

    U uPVC class Turnin10

    About to cut O ring grooves in the polycarbonate endcaps with my trusty Peatol lathe, with riser blocks fitted.
    OK it is not uPVC but it fits into a standard PVC sewer pipe!
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    Post  david f on Sat Dec 18, 2010 1:14 pm

    Stages in this very simple construction method. Basically just bending PVC sheet over a clay former using a heat gun. Good for winter construction - no smells!

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    Post  Wheelerdealer(Ramesh) on Sat Dec 18, 2010 11:12 pm

    How do you clamp the End cap in that small lathe and centre it? Do you have sort of faceplate that you can mount and centre it on?
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    Post  david f on Sun Dec 19, 2010 9:43 am

    Yes Ramesh, It is bolted to the face plate (You can just see the slot in the faceplate.)

    I glued a small diameter disk of polycarbonate on the face of the larger disks. I centre drilled this and the tailstock goes in there.

    This means that you can remove the faceplate and disks in one piece to test for O ring fit and then put it back on the lathe and centre it easily.

    The Peatol is on the limit of its size range turning a 100mm disk but it works fine.
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    Post  Wheelerdealer(Ramesh) on Sun Dec 19, 2010 10:11 am

    Thanks, I have to get myself an end plate. At the moment I use a regular 3 jaw 'chuck' and drill and the PVC held by a single bolt and nut through the centre, which in turn is held by the chuck. But this means unless you take very fine cuts the the pvc disc starts spinning around the bolt no matter how tight you tighen the nut.
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    Post  david f on Tue Dec 21, 2010 9:39 am

    Yes, face plates get a bit overlooked as lathe accessories.

    It is worth getting the fixings for them as well (The T bolts etc.) makes them much easier to use and prevents bits flying off at high speed!
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    Post  david f on Sun Jan 16, 2011 3:40 pm

    The first trial of the bare hull at Barrow to check on motors, props, rudder and turning circle. Looks fine.(I will also try to post a video.)


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    Post  Tom(ADMIN) on Sun Jan 16, 2011 4:07 pm

    That looks really good David, keep the reports coming.
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    Post  david f on Sun Jan 16, 2011 5:58 pm

    From a breezy Barrow today:

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    Post  Tom(ADMIN) on Thu Jan 20, 2011 9:53 am

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    Post  david f on Thu Jan 20, 2011 10:33 pm

    I am going to have to use a different primer colour to avoid these quips. Green?
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    Post  david f on Fri Jan 21, 2011 5:53 pm

    So Nigel and Richard you may make fun of the red carrot but it does show that the following drive system gives good results:

    2 off MFA 950D Series motors with 6 to 1 ratio gearbox. (5 pole motors giving 10000 rpm at 12v and drawing about 1A at maximum efficiency)

    2 off Rivabo Code 534-45 (45mm diameter) 3 bladed props, right and left hand.

    In combination drive a 44inch long hull.

    Information which may be useful in the eagerly awaited Brian/Nigel U class project!
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    Post  Tom(ADMIN) on Fri Jan 21, 2011 5:58 pm

    All joking aside David, it's a very impressive looking boat, and does perform very well, you chose well. When is the projected completion date?
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    Post  david f on Sun Feb 13, 2011 11:06 am

    U uPVC class U_clas10

    The superstructure in tin plate. (I've avoided red priming to avoid comments about tinned carrots etc.)
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    Post  Tom(ADMIN) on Sun Feb 13, 2011 3:41 pm

    Very nice work on that tower, David...very impressive.
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    Post  david f on Sun Feb 13, 2011 3:54 pm

    Thank you very much, Richard.
    (You sure you don't want to say something about tinned carrots?? Maybe I'll wait for Uncle Nigel!)
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    Post  Tom(ADMIN) on Sun Feb 13, 2011 4:00 pm

    Not a word of it David...I'll leave that to His Lordship. (I'm not silly!)
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    Post  david f on Sat Mar 19, 2011 1:30 pm

    Is there a "bow plane shaped" plate behind the bow planes?
    Brian's Umbra shows this but I can't really see anything like this on the drawings (See below)

    Also if any one has details of what I assume is a hydrophone housing just in front of the keel,I'd be grateful.

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    Post  nigele(ADMIN)2 on Sat Mar 19, 2011 3:25 pm

    LOOK AT THE DRAWINGS AGAIN,THE ARE THERE SHOULD HAVE GONE TO SPECSAVERS!!!!!!!!!!!
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    Post  nigele(ADMIN)2 on Sat Mar 19, 2011 4:15 pm

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    Post  nigele(ADMIN)2 on Sat Mar 19, 2011 4:18 pm

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    Post  Tom(ADMIN) on Sat Mar 19, 2011 4:22 pm

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    Post  nigele(ADMIN)2 on Sat Mar 19, 2011 4:24 pm

    U uPVC class Dave3_10

    Sorry about the quality of photo, you can see from this scan that the sonar details do not show they are covered by a plate which is part of the keel.
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    Post  nigele(ADMIN)2 on Sat Mar 19, 2011 4:37 pm

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    Post  david f on Sun Mar 20, 2011 7:35 pm



    I believe those plates were added to protect the planes from mine cables David...I think.

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