Tarmo4 locked diff for HSP 02024

thingiverse

Rear locked diff for Tarmo4 with 13:38 gear ratio. The HSP 02024 diff kit, which is a replacement of the stock Traxxas kit, uses 13:38 gear ratio. This means it's incompatible with the original rear locked diff, which uses 1:2 ratio, because while the front wheels turn 2 rotations, the rears turn almost 3! Basically the vehicle cannot move forward without binding the gears/wheels all the time. I've modified the design to have 13:38 gear ratio, which is the same as the HSP kit. The result is smooth movement without any binding. While the crown gear is positioned differently (more to the center), the stock diff gearbox lid fits just fine. ### Links - [Tarmo4 HSP0224 Diff MOD](https://www.thingiverse.com/thing:4559015) by [edystauch](https://www.thingiverse.com/edystauch/designs)