foil building
Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Dinghy development
Forum Discription: The latest moves in the dinghy market
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=2128
Printed Date: 16 Aug 25 at 11:42pm
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com
Topic: foil building
Posted By: Kiteboy
Subject: foil building
Date Posted: 21 Aug 06 at 9:55pm
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Hey, im making a mountainboard deck with foam cores and laminates for my gcse tech project and i reckoned it would be similar to making foils for a boat. anyone got any tips? my main interest is the difference between different types of glass cloth. if anyone can give me some info id be grateful.
------------- Laser Radial 185598 (transitional squad...oh yeah) 3 and 7 and 14m kitesurfing kites |
Replies:
Posted By: Chris Noble
Date Posted: 21 Aug 06 at 10:29pm
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biggest tip is DONT USE GLASS USE CARBON and use epoxy not polyester ------------- http://www.noblemarine.co.uk/home.php3?affid=561 - Competitive Boat Insurance From Noble Marine FOR SALE: I14 2 Masts 2 poles 3 Booms, Foils Kites/Mains/Jibs too many to list. |
Posted By: Jack Sparrow
Date Posted: 21 Aug 06 at 10:50pm
I would of said that your board would have more in common with a pair of skis or snowboard. As you need the board to flex as part of the suspension system and not break as well as being strong enough to take impacts. And as getting this right first time is unlikely I would go for glass cloth as it will cost you less and is less fragile. Maybe some selective carbon but as weight isn't super important, i.e you are going to bolt some big tyres and trucks on it and chuck yourself down a hill, so I don't think I'd bother. I would also go for some sort of laminated wood core to which you can attach foam around and bolt your trucks into. As for how exactly, who know's? got an old one that's broken. cut it in half and have a look. Or do some samples and test them. you might want to try some kite forums as well. like here: http://www.powerkiteforum.com/ - http:// www.powerkiteforum.com/ ------------- http://www.uk3-7class.org/index.html" rel="nofollow - Farr 3.7 Class Website https://www.facebook.com/groups/1092602470772759/" rel="nofollow - Farr 3.7 Building - Facebook Group |
Posted By: Jack Sparrow
Date Posted: 21 Aug 06 at 11:18pm
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My suggestion for wood core seems to be correct...
http://www.session1.com/parts-decks-c-25_26_313.html? osCsid=378168c72ee89d72e042c0ab54c4e888 - http:// www.session1.com/parts-decks-c-25_26_313.html? osCsid=378168c72ee89d72e042c0ab54c4e888 or you could just fo it like this: http://www.geocities.com/reystos/mountainboard/ - http:// www.geocities.com/reystos/mountainboard/ ------------- http://www.uk3-7class.org/index.html" rel="nofollow - Farr 3.7 Class Website https://www.facebook.com/groups/1092602470772759/" rel="nofollow - Farr 3.7 Building - Facebook Group |
Posted By: Kiteboy
Date Posted: 23 Aug 06 at 4:05pm
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[QUOTE=Jack Sparrow]My suggestion for wood core seems to be correct...
cheers, the first one seems to be making sense. the second one is useless as i am making a small lightwieght board for freestyle (spins and flips etc) i think i may go for a dense foam core with some thin plywood around it then lay up around that. anyone need to correct me? ------------- Laser Radial 185598 (transitional squad...oh yeah) 3 and 7 and 14m kitesurfing kites |
Posted By: TeamFugu
Date Posted: 31 Aug 06 at 6:24pm
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From what I've heard, most ski makers are returning to wood core skis. The flex of the core is more consistent and they don't break as easily as the foam skis. One thing to think of is that if you are looking for speed down a hill, weight is more a friend than a foe. If you want to make them stiffer, laminate wood with carbon and or kevlar between the wood layers.
Just foam and carbon will break very easily. Carbon does not like transverse loads at all and will fail almost all the time. Carbon works well in compression or tension though. A simple layup with wood, kevlar, and epoxy would probably work fine. ------------- Live large, love life, and sail fast. Swift Sol Home, http://swiftsolo.com |
Posted By: mike ellis
Date Posted: 01 Sep 06 at 3:31pm
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why is everyone else allowed to do more interesting gcse projects than me? lucky me making a childs toy. ------------- 600 732, will call it Sticks and Stones when i get round to it. Also International 14, 1318 |
Posted By: tickel
Date Posted: 01 Sep 06 at 9:10pm
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Probably because you cant spell lucky. Or is this one of those strange youthfull aberrations that us elderley chaps dont understand.. ------------- tickel |
Posted By: mike ellis
Date Posted: 02 Sep 06 at 9:09am
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no that was just a bog standard typo ------------- 600 732, will call it Sticks and Stones when i get round to it. Also International 14, 1318 |