50km/h is suicide. ps: anybody here owns a gyrowheel ?
Electric unicycle? I own several. Some will even go over 50 km/h, though I don't dare go that fast. It's just safe to have the extra power when needed.
A guide to building a fast electric skateboard at home
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Re: A guide to building a fast electric skateboard at home
#32the donor board section is just the battery section duplicated. you're also missing a really important piece (that I actually don't know anything about re li-po/li-on but do know something about re deep cycle lead-acid) which is the charge controller (i.e. the thing that prevents your battery from blowing up and maiming you).
Pleasantly, good speed controllers already have low-voltage cutoffs.
VESC has it, for instance. I believe it’s configurable for cell count, sag, etc.
Re: A guide to building a fast electric skateboard at home
#33Earlier quoted context omitted.
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.
What are you using to measure your speed? Do longboarders have an equivalent of Strava?
Sure, you can easily wear a GPS watch while longboarding.
Re: A guide to building a fast electric skateboard at home
#34Still waiting for that hoverboard.
Re: A guide to building a fast electric skateboard at home
#35Very cool but the original board was never designed to go at such speeds. I suspect you'll ruin the wheels fairly quickly, not to mention you might lose control at high speed fairly fast. I'm not a skateboarder myself, but I've moded some bikes and adding speed is the easiest part, making it useful speed is way harder. Also, I hope the engine can go in reverse or this guy has no breaking power; and as he gets comfort…
Yep, high speed can definitely ruin a wheel(!): https://twitter.com/machinepix/status/969654857895301120
That's a bit more than 50 km/h.
Re: A guide to building a fast electric skateboard at home
#36Is a similar thing possible with a micro-scooter? My son would love this as a project if anyone has any resources.
It's just motors and wheels. No reason it wouldn't be possible with any other wheeled device. Electronic motors + drivetrain are nice and simple compared to petrol engines.
Re: A guide to building a fast electric skateboard at home
#37Re: A guide to building a fast electric skateboard at home
#38A known path, say that multi use path, you can work up to 50 km/h, but on streets. strange walks etc, you would soon go beyond your ability to react - been there, fell then, on roller blades at a far lower speed.
Yeah, brakes are a good thing for safety.
Re: A guide to building a fast electric skateboard at home
#39If I'm going 50km/h on something, I would at least like it to have proper disk brakes like mid-range and higher bicycles do. Going at those speeds may be fun and all, but you're 1 careless driver away from the hospital, unless you ride on abandoned roads.
Yeah, lack of brakes on a 50 km/h vehicle is a problem. And in the case of skateboards, lack of handlebars too.
That said, disks aren't essential for good bicycle stopping performance. Good rim brakes (like most mid or high end road bicycles) stop just as quickly as disk brakes in dry conditions. Rim brakes are not really an option for long boards, though.
Re: A guide to building a fast electric skateboard at home
#40We need links to the different parts please:
"Motors are relatively easy, just use a wrench to put the wheel in place".
This is only true if you find the right type of motor, which is not easy at all IMHO.