One-Handed RC Car Thumb Steering Transmitter Control Addon

This is upload of files that I played with to control one handed my RC cars and Boats transmitters.

The objects consist of rings that attach to the radio controller wheel and grip objects that attach to the ring itself.
The rings differ in the diameter of the circle and in the way they are fixed to the radio controller steering wheel.

One of two variant is simply put over the steering wheel, the other allows for a more solid attachment using an M3 screw.

There four variations of the grip element. All variations consist of three lengths.

I managed to put together suitable combinations for all my radio controllers.

Put-On Inner diameters: 45, 47, 49 ,51, 53 mm
Screw-On Inner diameters: 43, 45, 47, 49 ,51 ,53 mm
Grips: "D", "B", "U" and "W" type