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Old 8th August 2012, 06:30 PM   #3
Ken
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Join Date: Aug 2006
Location: Dallas, Texas USA
Posts: 799
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Roger is right, but here is a simplified view assuming a skilled sailor (75-80 kg) on a 105 liter board in 20-25 knots on flat water.

Power - 6.5 (it's bigger than the 5.5)
Faster - 6.5 (if you can maintain control)
Control - 5.5 (it's smaller and has cams)

If both sails were the same size then it's different

Power - about equal
Faster - cambered
Control - cambered

With that said, I have non-cam sails from 4.0 - 6.0 and cammed race sails from 6.6 - 11.0.

For me, the non cam sails on a bump and jump board are more fun than the larger sails on slalom, and formula boards.

Speed wise (I always carry a GPS), my 5.2 on my bump and jump board has the same top speed as my 6.6 on my slalom board (different wind conditions).
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Toys:
Formula 160; iSonic 111; HiFly Move 105; Tiga 263; '85 Mistral Superlight.
Maui Sails TR 11.0; 9.2; 8.4; 7.6; 6.6; Maui Sails Switch 6.0; 5.2; Maui Sails Global 4.5; 4.0.
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