Originally Posted by
mark_stnly
What is a good starting point for a spur gear, I have a 104 64pitch spur now. I run 17.5 rubber.
Im at 97/53 3.66 fdr. Im at 135* with the big tc3 heat sink w/ a speed passion 17.5 on a tight track. But my Novak 17.5 is around 155-165* after 5 min on both