This is an Instructable on how to build an electric longboard/skateboard out of 3D-printed components as well as off-the-shelf RC components & open source software/hardware.
The drivetrain (motor mount and idler system) is fully 3D-printed and uses various screws, bearings, nuts and bolts to ensure that there is no flex in the plastic components.
This board can reach speeds of up to 42 km/h and has a range of over 16 km. The average pace of daily rides is around 15 - 20 km/h. It weighs around 8 kgs.
I have designed the idler system so that there will be no belt skipping even during hard braking, which is important for safety. Speaking of safety, remember to use Loctite 243 on ALL screws as well as Nylock nuts to prevent anything from coming loose due to vibrations. Also, ALWAYS wear a helmet while riding and use common sense while on the road.
There are a lot of ways to build an electric longboard/skateboard, different trucks, wheel size, gear ratios, motor sizes, speed controllers etc. but I will only be covering what I used for my build. All of the components were designed using Fusion 360.
Let's start with the tools:
Let's break the components down into three groups