Hi,
When I did my testing a year or so ago I would usually end up 2 pinions lower on my 2s/21t setup than I did with 1s/13.5t.
This was for small-medium sized tracks (biggest regular track I attended was 20x12m and the smallest was 17.5x10m).
NOTE: This was with a fixed timing HobbyWing 21.5t motor. My guess is that "modern", variable timing 21.5t motors will still need to be geared lower than a 13.5t but it might be just one pinion.
Hope this helps,
James
__________________
James Garrett - BRCA GT12 Rep
|