Originally Posted by
Robio
Not too familar with the MM Pro. Does it have any type of timing advance like other brands? If it does, you'll use a lower FDR. Starting around 6.0. If it does'nt, you may try around low 4.0's to start. On mine I ran 4.3 on a medium asphalt track. 88x48 spur/pinion. My IDR is 2.43 as I have the Moorespeed. I believe yours is 2.1? Just some ideas to consider.
Rob.......
quick question, how are you managing to get a 88T spur on? I tried putting on a 84T and it bound up on the chassis.