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Old 1st April 2007, 11:33 PM   #5
Join Date: Feb 2007
Location: Buenos Aires Argentina
Posts: 33
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Default RE: Isonic 111 speed


As a recent owner of an Isonic 111 (sailed 6 sessions) I can say that the 42 cm fin is not suitable for speed while powered with a 7.0 sail . I use the 111 with a 7.7 Severne code red sail in the 12-18 knots range with the stock drake 360 fin (good upwind performance, no spinouts, high downwind speed).
The max gps speed I measured is 31 knots in far from ideal speed conditions (gusty-medium chopp).
I guess that for a 6.7 or 7.0 sail, when powered at the 15/20 knots range the ideal fin size is between 34/36 cm, and a skilled sailor would reach 34/35 + knots in flat water.

As your IS111 comes equiped with both fins (42 and 36) you can try this without buy a new one for the first trials, then you can try more speed dedicated fins in order to improve your results.
Please tell me your experience later .
The chassis:
Isonic 2009 122/101/86 , F2 Mauiproject W 90 lts

The motors:
Slalom: Code red 8.8 NP RSR 7.8/6.7 evo/6.2 evo NP RS6 5.4
Wave: NP zone 4.4 North Ice 4.7/5.3

The rider: Age 48 (yeah, I know, so old, but still on form)
Height 1,84 m
Weight 87 kg
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