Posted by mattogodoy 3/30/2025
Did you know that instead of buying new motor controllers, you can re-use the hoverboard motor controller? Awesome people have made open source firmware you can flash to it: https://github.com/EFeru/hoverboard-firmware-hack-FOC. With this firmware you can make the motors go way faster, up to 40km/h with a 12S battery.
We are also building a kart with hoverboard motors, with a custom welded steel frame. Vibrations are a real issue with the standard solid rubber wheels, hopefully I can find the same air tires you used!
Our website is in Dutch, but you can watch the videos: https://projects.raphson.nl/projects/kart/
It's a nice, cheap material for prototyping on, and then you can base the cut of a piece of metal or plastic on it for a more permanent solution.
I think MDF will easily last until his kids don't fit in it though. I don't think he's going to use it in the rain.
It would fail eventually anyway, but either of those two options, depending on price, would be good and cheap enough to last.
It does the swiping while loading the images I believe. For me it was buggy, and the first opening left the swiping on, but after f5 it's okay now.
Sad noises of living in a densely populated area. I can't wait to retire and move out of here
I have a bud who uses a custom built electric go-kart for filming stunt scenes — specifically those low camera moves of one car passing another.
He had to build his own controllers to allow smooth acceleration as visible jerks ruin the take
His tops out at 100+ mph but I thing they usually film at 70-80mph.
But yeah — those things are death traps
I'd add a mechanical brake and teach my kid how to use it. And maybe a failsafe switch that shuts the thing down when no one sits on it?
Wish my Dad made one of these for me but we used a pushchair pulled by an excitable dog. Less power but just as dangerous