motor control for model locomotives and industrial machines
motor control for electric boats and toy cars
motor control for greenpower cars and robot wars

Welcome to 4QD – Electric Motor Control

We manufacture a range of  motor speed controllers and accessories for DC battery powered electric motors that are tough, reliable, and easy to use. We can provide electric motor speed control solutions for almost anything with a battery and a DC electric motor, all of the pictures throughout this site are using our controllers.

Our passion is getting stuff working – from model locomotives, golf carts, boats, and robots; to industrial machines, special effects, and all sorts of DIY projects. We love helping mechanics get the electrics working, here’s a sample of the sort of thing we’ve done.

For help choosing a controller click here

If you want to browse our range then our controllers are here, and our accessories are here.