RC FPV-Trike Features Unique Motor Setup

Perhaps the most basic type of mobile robotic chassis involves a pair of motors that drive and turn it like a tank, along with some sort…

Jeremy Cook
5 years ago3D Printing / Robotics

Perhaps the most basic type of mobile robotic chassis involves a pair of motors that drive and turn it like a tank, with some sort of supporting “pivot point” to keep it upright. While this pivot is normally a single ball bearing or just a post that gets dragged along, this build by Markus Purtz puts a different spin on things, adding an actual steerable third wheel.

The result is something entirely unique, with two wheels pulling the vehicle, while a single wheel in the back acts almost like a boat’s rudder, guiding it in the proper direction. This back wheel is steered by a small MG90S servo, via rods attached to the horn. The trike, as seen in the video below, is a very speedy and maneuverable vehicle. Although only the back wheel is used for steering, with an ESC hooked up to each driving motor, it should even be possible to use a combination of differential and turning control for even more control options.

In addition to the interesting motor setup, this 3D-printed device features a series of magnets to keep the top cover on. It also has accommodations for both an FPV RC camera, and a GoPro if you want to film its exploits. Print files are available on Thingiverse if you’d like to make your own.

Jeremy Cook
Engineer, maker of random contraptions, love learning about tech. Write for various publications, including Hackster!
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