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.
There is no real science to determining what roll out should be. Typically people just take an educated guess and try that. From there they go up a bit and down a bit and watch what happens to the lap times and keep adjusting until either your times no longer get better or even start to get worse. Every track is different in size, layout, and grip...so there is no formula out there that you can use to plug in the variables and come up with a roll out.