RC one-handed thumb steering adapter (DX5C)

thingiverse

This adapter lets you drive an RC car one-handed, using your index finger for the throttle as usual, and steering with your thumb. It's perfect for navigating through obstacles on a crawler trail or when you're also trying to film while driving. The inner diameter is 51mm, or 2 inches, making it suitable for a Spektrum DX5C radio and many others that have a wheel sticking far outside the main body. When printed in PLA with 20% infill, the clamp diameter will flex easily to accommodate radios with diameters up to 5mm larger or smaller. A groove allows you to secure it in place with a ziptie. If needed, printing a scaled version can help fit the adapter to other radios.