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Old 1st June 2008, 11:55 AM   #31
pfaffi
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CR08 = Severne Code Red model 2008
Yesterday I raked my G1 fin much more forward than using it before on F161. App. +3deg or +3,7cm. To speak in Jaques words its now a +9 or +10 S-
With this setup the F162 was much better in all. You can ride it flat and you can keep the stance and angle in lulls. Even in fast deep downwinds the board was easier to ride.
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Old 2nd June 2008, 12:29 AM   #32
fin66
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Arghhh CR08, me stupid and too tired

Last edited by fin66; 2nd June 2008 at 12:34 AM.
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Old 2nd June 2008, 12:34 AM   #33
fin66
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Pfafi

Whats G1 fin? Or am i too tired again

Did you have to move to mast base more back when you raked it to 3deg? must push the nose down a lot.

Has anyone tried to rake drake R19, the fin that came with the board, even more upright to get enough power in light winds?
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Old 6th June 2008, 03:26 PM   #34
pfaffi
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Hi fin66
no change in mast base position with a more foreward raked fin. I found the point as described before with -2cm as best position. With my more raked fin the F162 is more stable and has a fixed trim.
If your board nose is pushed down your fin has not enough twist stability and by this the tip turns to a more powerfull angle of attack if you rake it foreward. Thats why the Kashy is doubble twist stiff as a Debo. Thats the secret.
br, peter
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Old 11th June 2008, 08:13 PM   #35
pfaffi
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Hi G!
For your F162 you need a much more powerful fin compared to the F161. Additional the fin must be raked more foreward. That is needed because of the different "Lateral Plan" of the new one. So the different rake is not only increasing (+)/decreasing(-) the finpower also it is influenzing the Lateral plan.
Deboichet has only two different outlines:
R13 and R14:
The R19 is a R13 76cm cutted to 70cm
R16-17-18 are cutted out of a longer R14, R18=R14-77cm cutted

As the R13 was Deboichets best fin it makes sence to follow the R19 which is made out of the R13. To reach the best lateral plan take a +9 or +10 for the F162.

Hope it helps!

peter
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Old 11th June 2008, 10:25 PM   #36
Paolo ITA138
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Hi Pfaffi,
sorry for the stupid question: how can you rake yourself a fin as you wrote in a previous post? What exactly is a G1 fin?

Thanks a lot!

Ciao

Paolo
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Old 12th June 2008, 12:17 AM   #37
G
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Thank you Pfaffi,
have you used this set up in Torbole Supercup?Which sail size?
I think that a so powerfull fin should be good for a 12 mq.
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Old 15th June 2008, 05:57 PM   #38
pfaffi
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Hi Paolo!
To rake a fin by yourself: first change the angle of the front end of the tuttle box head of your fin. Than you must add some epoxy material on the back end to fill the missing gap. By this setup the tuttle box head of your fin will go on the front end deeper into the box. The back end should be on correct level. E.g. 10mm deeper at front end is app. 3,7deg. or 4,5cm at the tip for a 70cm fin.
cheers peter
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Old 20th June 2008, 07:43 PM   #39
Paolo ITA138
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Thank you!

Ciao

Paolo
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Old 20th June 2008, 08:06 PM   #40
Papounet
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An old and heavily used 70 cm Deboichet R12 has been raked 4 cm forward (the fin can now be labeled a R12 Rake +4). The red arrows show places on the fin head with new material put on (epoxy putty is most often OK), and the blue arrows show places, where some original material has been removed.

The yellow arrow indicates the rotation point for the raking forward - and with a little imagination it's easy to understand that this particular fin shall violate the formula rule saying that the max. length of a fin is 70 cm - unless, of course, a little material shall be removed from the tip of the fin.


From : http://www.peterman.dk/start-windsurfing-gb01.htm
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