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rail profiles - help!

 
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swordie



Joined: 04 Jun 2004
Posts:
Location: Wales

PostPosted: Mon Apr 11, 2005 4:51 pm    Post subject: rail profiles - help! Reply with quote

Ok at long last I've got my act together and am about to commit saw to foam. so it's going to be a fish paipo 4'6" x 22 x 2.5 with a wide tail [around 17"] I'm a big [ie wide] guy. keel fins.

can someone give me a pointer on rails - 50/50 all through or hard soft hard or up rails at the front?

c'mon guys help me out here! Laughing

BTW waves mostly dribblers, with odd good day thrown in from knee high up to overhead
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rodndtube
Dolphin Glider


Joined: 06 Jan 2004
Posts: 690
Location: USA, MD, Baltimore

PostPosted: Mon Apr 11, 2005 11:24 pm    Post subject: Reply with quote

I don't like the "up" rails up in the forward third, but nothing too hard/turned down either. Reason: the nose is more likely to dig during a turn. 50-50 or soft works better for a good release, more forgiving.
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Poobah
Dolphin Glider


Joined: 09 Jan 2004
Posts: 696
Location: California, San Diego

PostPosted: Tue Apr 12, 2005 12:27 pm    Post subject: Reply with quote

Sometimes sharpness in the crotch of the tail is achieved by having the masking tape high on the tail in the hot coat stage.
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kage
Dolphin Glider


Joined: 12 Jan 2004
Posts: 286
Location: Santa Cruz

PostPosted: Tue Apr 12, 2005 2:35 pm    Post subject: Reply with quote

I am trying to find a link to the 70's design book that has the Lis Fish specs. It has precise rail shapes and measurements from top to bottom. But I can't find it. It was either KSUSA of Swaylocks but I searched and couldn't find it. I have a printout but the dimensions are so small and fuzzy... Can anyone find that link? It was to a .pdf file for a whole book.
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slopsurfer



Joined: 11 Mar 2005
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PostPosted: Fri Apr 15, 2005 6:47 am    Post subject: Reply with quote

Kage,

i think this is what your after.

http://fundingcashflow.com/surfing/Surfboard_Design_and_Construction_1977.pdf
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slopsurfer



Joined: 11 Mar 2005
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PostPosted: Fri Apr 15, 2005 6:48 am    Post subject: Reply with quote

page 61 Wink
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