Nor-Cal Hobbies “Gears” app is an R/C car and truck gear ratio and rollout calculator. Enter the transmission ratio, spur, and pinion to generate a table of gear ratios. Enter the tire diameter to get a table of rollouts. Designed for the R/C car or truck racing nut looking for a super easy way to determine gearing on your iPhone right at your pit table. Itll run on phones with iOS 8 and newer. And it is FREE!
Brought to you by Nor-Cal Hobbies: http://www.norcalhobbies.com