Old 19th February 2010, 05:06 PM   #1
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is there a fin chart for formula boards?
i am forced to use a weedfin
spinning out using a 44cm fin sailing with a 7.4 sail in 15 knots 120 lb rider.
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Old 19th February 2010, 05:39 PM   #2
nonopr
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Too small of a fin for a formula powerful rails and tail.
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Old 19th February 2010, 10:07 PM   #3
Roger
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Hi Unregistered,
Do you need a weed fin simply for "weed shedding" qualities,or do you also have a water
depth (shallow sand bars etc) issue?
I've had most of the Formula boards since they were first invented, and here's what has worked for me.
My #1 choice is the Lessacher Design 40 cm Formula Duo:
http://www.designlessacher.com/Websi...mula_Weed.html

My #2 choice is a toss up between the Tangent Reaper Weed 46 cm:
http://www.southport-rigging.com/browse.cfm/4,7598.html

the True Ames Shallow Water Weed 20"/51 cm:
http://www.trueames.com/wind_select....products_id=14

If you have a little more water depth, the True Ames Santa Barbara Weed
works well on Formula boards in the 23.0 inch (58 cm) length.
http://www.trueames.com/wind_select....products_id=15
You will never get the same feeling or upwind VMG with weed fins that you get with
a good vertical race formula fin, but if you move your mast foot back to near the back of the track, you can get the early planning and pretty good upwind performance that formula boards are known for.
Also, some of your "spin out" issues may be due the the extremely small sail size (7.5 m2) that you are using.
Formula boards (and virtually all boards over 90 cm wide, need large powerful sails, and you need to make some adjustments if you are using smaller sails.
Mast foot back all the way (very contrary to normal formula suggestions) to get the CE of your small sail back where it will balance "over" the fin better.
Hope this helps,
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Old 22nd February 2010, 11:16 AM   #4
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thanks for your excellent suggestions roger.
i will check out the fins and try moving the mast
and get a bigger sail.

i need the fin for weed shedding, and sometimes for water depth.

gary

garyorlando@gmail.com
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Old 22nd February 2010, 04:55 PM   #5
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the reason i don't like to use a bigger sail is that a 7.4 gets me going nicely in 8-14 and i'll go to another board/sail if it's blowing harder.

and if i drop the 7.4 during a gybe, and the wind picks up, it's real hard to uphaul if waterstarting isn't working.

so a 8.5 or 9.5 would be quite a handful for me.
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Old 26th February 2010, 10:56 AM   #6
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roger,

how do i buy a lessacher?
no reply when i emailed him.

gary

garyorlando@gmail.com
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Old 27th February 2010, 03:54 AM   #7
Roger
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Hi Gary,
Wolfgang may be off somewhere testing fins or at a speed event.
What email address did you use?
I'll compare it with what I have and send you a private mail.
Send me the address you used in a private email please.
Roger
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Old 27th February 2010, 05:10 AM   #8
Roger
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Hi Gary,
Wolfgang may be off somewhere testing fins or at a speed event.
What email address did you use?
I'll compare it with what I have and send you a private mail.
Send me the address you used in a private email please.
Roger
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Old 1st March 2010, 05:15 PM   #9
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wolfgang.lessacher@t-online.de

thanks

garyorlando@gmail.com
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Old 1st March 2010, 05:37 PM   #10
agrelon
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Quote:
Originally Posted by Unregistered View Post
the reason i don't like to use a bigger sail is that a 7.4 gets me going nicely in 8-14 and i'll go to another board/sail if it's blowing harder.

and if i drop the 7.4 during a gybe, and the wind picks up, it's real hard to uphaul if waterstarting isn't working.

so a 8.5 or 9.5 would be quite a handful for me.
I'm also 120lbs and I'm looking to put together a really light wind setup to maximize my windrange. I already own a 7.5m, so it's good to know that this can get you going in just 8 knots! This range, 8-14knts, would be ideal for me as I generally take my 5.8m and current board out as of 14 knots.
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JP Super-X 106l, North F8 Ram: 5.8m,
175cm, 54kg

Last edited by agrelon; 1st March 2010 at 05:40 PM.
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