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joethewindsufa
Joined: 10 Oct 2010 Posts: 1190 Location: Montréal
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Posted: Sun Nov 20, 2016 7:34 am Post subject: |
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as John says - much is up to the rider ...
my 80 cm boards seemed to have 50-55cm OFO
and thus a 34 cm fin could be used on such a board
for which sail size ??
I once developed a formula for my 80 cm board of sail size to fin length
realising there is more to fins than just length!!
Fin Length = 8 times the sail size minus 16
for a 6.3 square meter sail -> 8 * 6.3 -16 = 50.4 - 16 = 34.4 cm
then i ask myself would a take an 80+ cm wide board with a 6.3 in 6.3 conditions
at first I thought NO WAY
someone mentioned that Peter Volwater suggested wide is better in rock n roll conditions - may have read that here and is a revelation to me too
and so, back to original statement
it all depends on the rider
and ... let us know how it all works out |
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isobars
Joined: 12 Dec 1999 Posts: 20935
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Posted: Sun Nov 20, 2016 11:07 am Post subject: |
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I just measured a few of my 80L boards at OFO. They run 30-35 cm, and are absolute marvels at B&J plus max-speed slashing and jibing in Gorge chopswell. I'd want nothing wider when powered up with the usual 4.2-5.2 sail sizes so typical with 80L, and my 23-25 cm fins are considered big but they help me rip way upwind and plane through the lulls. |
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markwk
Joined: 07 Jul 2015 Posts: 4 Location: central NC
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Posted: Wed Nov 23, 2016 1:58 pm Post subject: |
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nodak wrote: | I do lake sailing. I'm 190 lbs. My fins are 38-40's depending on the sail size. Stock Tabou 46cm is too big is more suitable for 9.0 sail, which i'll never use.
Fin size is a good point. I remember pairing 35cm or so fin with 6.5 Retro on a Kona One and got virtually no lift. So no matter how well of a sail/fin pairing there is - only certain size sail make practical sense.
So my question: 128L Rocket Wide + 34cm fin + 6.3 sail on 18-20mph day? |
I'm 155lbs, own the 2015 Rocket Wide 128L CED. On three occasions this
year I sailed it with an AeroTech 6.4 AirX using a 40cm MFC fin in local lake conditions of 10-22+ mph multi-directional gusty wind with the resulting psychochop. The board is fairly well behaved in these conditions. I'd suggest positioning the base/foot all the way back and actively keep the nose riding high as the nose rocker is minimal. Don't think I would want to use this board in any windier conditions, it's such a great ride and I don't want to risk breaking it! |
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