Gear Selection - Waterloo Formula Electric Hub Motors
In 2016, Waterloo Formula Electric, a student team working in the SSDC, designed custom hub motors to power their electric racecar. One of the key design features was a planetary gearset to reduce the motor speed and increase the torque available to the wheels.
A planetary gearset was chosen because of the symmetric gear loading, coaxial input and output shafts, and because of the available manufacturing facilities. The sun gear is the input and the output is the carrier. The ring is fixed to the hub motor casing, which also functions as an upright.
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Waterloo Formula Electric 2016 Capstone Project |
Calculator for Gear Selection
KHK Gears
KHK Gears has made a very complete gear calculator available to registered users. This tool can be used to design gears after the basic parameters (tooth count, ratio, bore size, and face width) are selected.
KHK Gear Design Calculator |
Engineers Edge
Engineers Edge also has a gear tooth strength calculator that can be used to estimate the maximum possible load on a gear tooth.
KHK Gear Design Calculator