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-   -   Race sail vs no cam sail (http://www.star-board-windsurfing.com/forum/showthread.php?t=15840)

juan1 30th December 2012 07:53 AM

Race sail vs no cam sail
 
What is the difference in speed for the same size sail but race vs no cam (freeride) sails for same conditions?.

Ken 31st December 2012 05:21 PM

Do a forum search on this subject for a lot of info.

If you are talking about flat water speed, then.........

Light wind (5-12 knots) - freeride will be faster
Moderate wind (10-22 knots) - about the same
High winds (20-30 knots) -cam will be faster. However, with wind this strong, few will be on cam sails except slalom, speed or formula racers. Most will be on no cam sails because speed isn't an issue and they want light, easy to handle sails that gybe well.

Generally, more power with the freeride sails and more stability and range with the cam sails.

Roger 31st December 2012 06:26 PM

Might be worthwhile to make the distinction between Free Ride sails and Free Race sails here.
Free Ride sails Camless ~4.0-7.0 m2 tend to have less draft and be more "price point" sails
and are probably not the fastest size for size.
Free Race sails Camless ~6.5-10.5 m2 tend to have more draft, but less stability than => 3
cambered race sails.
The additional draft is good for gettting you planing in marginal winds, but you probably don't
want to sail the big Free Race sails any where near as overpowered as you would a true =>4 camber race sail, as they lack the race sails top end stability.
So, which is faster depends alot on the conditions (windspeed here), the sailors skills,
and how well the sail is rigged/tuned for the current conditions.
Bruce Peterson, the designer @ Sailworks, did a test a few years ago and placed 2nd in the FW class
at the Nationals on camless Retro sails. He did this as an experiment....to stifle some of the naysayers
that the camless Free Race Retro would never do well in a race.
Would he have won the class on his NX race sails?...maybe!
The level of competition at the Nationals in the Gorge is about as good as it gets in North America so the Retro sails Bruce was using were certainly not slow.
Roger

Unregistered 1st January 2013 11:29 AM

if the wind is steady - stick with no-cam free-ride
if the wind is gusty or full of holes go with cambered
if your sail is rigged badly - who cares
if you are not racing - who cares
if you are having fun - the question or issue is resolved
Happy New Year

juan1 1st January 2013 02:03 PM

Thanks for your help
I will like your opinion on this : i have a gaastra cross 6,4 and a mauisails tr7 6,3
Which will you choose for sail a rrd firemove 100 and get the best speed?
Thanks fish

Ken 1st January 2013 04:00 PM

I don't know the Cross sail, but I have TR sails from 6.6 to 11.0. I would guess the TR7 6.3 with little doubt, assuming the TR is rigged right. Be sure to measure the downhaul as directed on the Maui Sails web site (base of mast to top of pulley). All this assumes that you are in well powered conditions, 18+ knots.

Unregistered 2nd January 2013 10:24 AM

juan1:

get a GPS - beg, borrow, buy
most race enthusiasts suggest this anyway
then under same conditions compare

juan1 2nd January 2013 11:56 PM

Unregistered, thanks!!!


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