Originally Posted by
YR4Dude
Lots of info in how to calculate rollout but how is the rollout determined. In other words how do you know that your track requires a specific rollout for the intended motor? Is there a method to figure this or is ths just an empirical number?
In all my years of RC racing, gearing has always been "socially engineered" at the track.
However, it would be nice to know how to determine it on my own.
+1
82 spur and 60 pinion gives a range from 94-114 with tires from 41-50 which is pretty close to where we need to be. Might start with that as it gives me some room to play with tire diameter.
Thanks ericf
EDIT: Just searched for spurs gonna need to be 81 or 83 cant seem to find an 82. Recommendations on spur brands. I can get serpent ( obvious choice being its going on a s120lt) or associated or xray and kimborough. I read somewhere about having lots of holes for the balls...???
I think i'll lash out and go the sxx, save me having to much around and charge the booster as well.