Half-throttle grip for Ausom electric scooters with thumb throttle.

I really prefer the ergonomics of a motorcycle-style twist throttle over a standard thumb paddle. Because of this, I designed this 3-piece grip mod that mechanically converts a standard thumb throttle into a half-twist throttle.

Note: This specific design is made to be used with the new thumb throttle which comes with newer Ausom models, but you can buy it separately for older models with an index finger throttle (like my Ausom L2).

This setup gives you that classic wrist-action control. Only the inner half of the grip rotates. It spins smoothly over a 3D-printed inner sleeve, which then transitions into the fixed grip. The whole assembly is secured to the handlebars with a dedicated end clamp.

This mod consists of 3 separate pieces (be sure to separate them in your slicer before printing):

• Rotating Grip: The inner half featuring a textured pattern that engages the thumb paddle.

• Fixed Sleeve & Outer Grip: Acts as the stationary bearing journal for the rotating part to spin on.

• End Clamp: Locks the fixed section to the handlebars (don't overtorque the screw, it doesn't need much).

Hardware Required: Almost no extra hardware is needed. You only need 1x matching nut for the end clamp. The bolt itself is simply reused from the factory stock grip.

Print & Assembly Instructions:

• Supports are needed.

• Print everything vertically.

• Max out walls for the end clamp.

• It might be stiff to rotate at first. You will need to slightly sand the edges of the contact surfaces. Tolerances are tight to ensure little to no play in the rotating part of the grip.