This 48pitch, 40-tooth spur gear is provided as an aftermarket upgrade for use on the O-AP0001 platform. It pairs with the motor pinion to set the drivetrain ratio and tooth engagement characteristics.
Fit this 40T spur when replacing the original large gear or when experimenting with different gear ratios during setup. Pay attention to axial placement and pinion mesh during install, ensure the spur turns true on its bearings, and make sure it does not foul the gearbox housing.
During final checks confirm pinion-to-spur engagement at low throttle, inspect bearings and backlash, and make sure rotation remains smooth across steering and suspension movement. Changing spur tooth count modifies final gearing, so match the 40T with a suitable pinion to tune acceleration versus top speed.
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