Originally Posted by
JasonR/C
Looking for a starting spur pinion setup for stock 17.5.
Running a novak vulcan motor.
I race at leisure hours raceway in joliet. Big asphalt track.
New to onroad so any advice would be awesome
Not sure what pitch your running but start at 3.90 FDR and check your temps, depending on how big and flowing the track is, you may be able to run a lower FDR (smaller number).