Laser 28 - Excellent example of this great design Hamble le rice |
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Rossiter Pintail Mortagne sur Gironde, near Bordeaux |
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List classes of boat for sale |
Mini Freesail Cat board thing |
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G.R.F. ![]() Really should get out more ![]() Joined: 10 Aug 08 Location: United Kingdom Online Status: Offline Posts: 4028 |
![]() ![]() ![]() ![]() Posted: 27 Sep 08 at 7:54pm |
Not sure where to put this, it's a cat in as much as it has two defined
hulls, it's to be powered by a windsurf rig in a hope to make me feel a bit safer putting the hammer down in 25 knots plus. Launched it today, we had no wind, so it was just a float test, see how it rides in the water and i shoved it about to check it would lift onto the plane. It's made of ply, glued, screwed and nailed together from bits costing less than £100. It's been an idea that's been kicking around my head for some years, loads of sketched and doodles but everytime i asked someone to build it they thought I'd lost the plot, which clearly i have, but if I get proof of concept out of it, and it gets through the speed course at anything approaching a respectable speed (anything over 30 knots) and I'll be happy. It's way too heavy, I daren't even weigh it. It's got a three stage rocker, final planing wetted surface a minimal 2.4 sq mtrs, inside two kite bladders should ensure even if it leaks, not too much water ingress will occur, now it's finished you'll notice the winds gone. Ayway i just thought y'all might be interested. ![]() ![]() Edited by G.R.F. |
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Ross ![]() Really should get out more ![]() Joined: 02 May 07 Online Status: Offline Posts: 1163 |
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From sailing Cherubs, I know looks can be deceiving. But I don't think this is going to work very well. Hats of for building it though!
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Ross
If you can't carry it, don't sail it! |
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G.R.F. ![]() Really should get out more ![]() Joined: 10 Aug 08 Location: United Kingdom Online Status: Offline Posts: 4028 |
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Here's a bet, and I've genuinely no idea, it hasn't had a rig on it.
But I bet i can get that to go a lot faster than Flat Stanley. Shall we say a tenner? |
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Splosh ![]() Far too distracted from work ![]() ![]() Joined: 13 May 07 Location: United Kingdom Online Status: Offline Posts: 497 |
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Hi GRF. Well done, she does look like a fast bit of kit Also whats the idea of the angled fin? is it just a anti-weed one or does it give it a boost of performance? And finally could we see a piccy from the top? Looking good though! Mark. Edited by Splosh |
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RS300 - 346 :D
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Ross ![]() Really should get out more ![]() Joined: 02 May 07 Online Status: Offline Posts: 1163 |
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G.R.F, your on! As long as you tow me there an back!
Angled fin, bow up trim? |
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Ross
If you can't carry it, don't sail it! |
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G.R.F. ![]() Really should get out more ![]() Joined: 10 Aug 08 Location: United Kingdom Online Status: Offline Posts: 4028 |
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The weed fin was an idea I'd had a while back to reduce drag, I was going
originally without a fin, then I had this idea for a fin'wheel' then given so much experimentation best to prove one thing at a time. Weed fins are foiled at that angle so you're not dragging the foil by sweeping it back. Straps and pads not in place yet, wanted to sail it first, get a feel for where I'll need to put them.. No need to steer it really, speed sailors just blast down a straight course, get off the other end, turn their board around and sail back, no need to even gybe. ![]() |
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Ross ![]() Really should get out more ![]() Joined: 02 May 07 Online Status: Offline Posts: 1163 |
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How much sail is it going to be carrying?
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Ross
If you can't carry it, don't sail it! |
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ratface ![]() Really should get out more ![]() ![]() Joined: 07 Apr 07 Location: United Kingdom Online Status: Offline Posts: 686 |
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looks like it would be quite interesting to watch
good luck with it Graeme, remember to get some video of it moving. Ross: seeing as it will take a windsurf rig im sure it will be able to carry a silly amount of sail area, right down to the damn right small in a blow |
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G.R.F. ![]() Really should get out more ![]() Joined: 10 Aug 08 Location: United Kingdom Online Status: Offline Posts: 4028 |
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I have a very light 9.5 mtr rig, which is bigger than a moth.
I will also use my variable luff curve invention from a couple of years back, a 7 mtr I managed to get through the course in a 48 knot wind, but the board I was using back then was slow. There's a bit about it here it's good for 31.5 knots on an old dog of a board. Anyway we can talk all we like, the proofs in the pudding, but it'll be fun using stuff I've built myself, I'm usually totally useless at making things, i can design them, but make them happen.. no chance. |
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Chew my RS ![]() Really should get out more ![]() ![]() Joined: 05 Oct 05 Location: United Kingdom Online Status: Offline Posts: 790 |
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GRF - what's the thinking behind why it should be quicker than a single hulled board? It reminds me a bit of a pair of waterskis held rigidly together, with a fin poking down... |
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http://www.sailns14.org - The ultimate family raceboat now available in the UK
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