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As neat as this looks I wouldn't build a DIY electric skateboard for the same reason I wouldn't want to build software for an airplane.
> As neat as this looks I wouldn't build a DIY electric skateboard for the same reason I wouldn't want to build software for an airplane. You mean for legal reasons? ;-)
Problem is I kept having electrical noise issues that caused my wireless to cut out. I never figured out how to reproduce it in the lab because it only seemed to happen under certain circumstances (possibly correlated to extremely heavy load, but not always). It caused some dangerous moments...
My build used a VESC X (from enertion skateboards, but seems like it was discontinued). The VESC is a nice open source high current motor controller, except the FETs they use are in a pretty dumb package, and the VESC X used an aluminum enclosure that acted as a heatsink for the DirectFETs they used.
I also used 2x 4S batteries[1] used for scale cars, because they had an integral plastic box that stopped it from getting pelted by rocks and such (good thing I got it, because I originally mounted it using Velcro and it fucking dropped during a ride and the battery slid for like 100 feet; probably would have exploded without the plastic box).
[1] https://hobbyking.com/en_us/turnigy-5000mah-4s1p-14-8v-20c-h...
I've always wanted to make an electric bike out of an electric drill and their batteries. Very easy to source parts, could buy second hand. Could even just friction drive the wheel with the drill!
You'll burn out the motor in short order. Drill motors are not designed for sustained loads.
ps: anybody here owns a gyrowheel ?
50km/h is suicide. ps: anybody here owns a gyrowheel ?
[0]: http://www.guinnessworldrecords.com/news/2018/2/watch-this-s...
Earlier quoted context omitted.
A longboard downhill can easily go over that speed.
I hit that speed regularly on mild downhills. Bombing a hill you can hit 80km/h pretty easily. I think the record is around 140km. Certainly not bragging, as it's not that impressive among downhill longboarders. Just trying to give some perspective.
Earlier quoted context omitted.
A longboard downhill can easily go over that speed.
But then you get speed wobbles... https://imgur.com/auUscXX
See an explanation here: https://en.wikipedia.org/wiki/Automobile_handling#Yaw_and_pi...
And a 30 second visualistion here: https://www.youtube.com/watch?v=4jk9H5AB4lM