Tempest FAI gear ratio kit?

[S.Peterson]

I have a stock FAI (7.75:1) and would like to convert it to 8.45:1. Is there a gear ratio kit available? If not, can anyone give me a parts list.

YS 91, viperhead, sb-16, magnum 30%

Thanks

Stu

[inkspot1967]

heliproz has kit for them i believe this is what you are looking for

RK1023-7 Ratio 8:45 Tempest3D

[S.Peterson]

That part number (1023-7) is for the Tempest 3D kit with an 8.45:1 ratio. I can buy the 11 tooth pinion (I have the 93 tooth main gear), but I can't find the clutch side plates for the 8.45:1 ratio. They need to be the tempest specific side plates, because the fury ones are different. I also don't know if the same motor mount is used.

If anyone has a tempst with 8.45:1 in it, please let me know what the p/n is for the clutch side plates and the motor mount.

Thanks

Stu