NO SIR...you will fry your motor nice and fast here in california with that final ration...Axel I used the 103 spur with a 29pinon this weekend and it was just right... but it does playa major role on the size and layout of the track...I can not remember the final but I always start with 7.0 or near there to start with a stock motor...with a 19 I start near 6.3-6.5.
If you go to much you will hurt the magnets of your motor fast...
Hope this helps
-Shookie <><
Originally Posted by Martin Hofer
Outdoor I always run about 5,0 to 4,5 final gear ratio.
Stock in Germany is 27T .. Ball Bearing 24° locked timing.