MotoGP God
Posts: 18,275
Join Date: Apr 2002
Location: Oxford
Mood: Its ONLY a Bike Club
My Mag arm, Dymag Carbon arm and extended Spondon arm are all 25mm longer. I didn't know they did any shorter versions as it seems pointless. On any of mine the eccentric adjuster can be rotated to reduce the wheelbase.
If I were you I would just get the 25mm longer version and then adjust your wheelbase to suit which will depend on sprockets and chain length.
The longer arm is used to improve rear traction, along with moving the weight bias forward and should be used in conjunction with race offset yokes.
From what I have read Foggy used his bike on the less steep rake angle but with different trail figures.
[Edited on 27-12-2004 by skidlids]
skidlids
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