that’s not true, brushless motors will work at any voltage (to a extent) until the voltage is high enough for the windings to arc you won’t have any issues, and even when the wingdings do arc it is not going to cause a cooked motor.
also 48v is nominal voltage, 48v usually stands for 13s, 13s fully charged is 54.6v
The main limiting factor on brushless motors is amps which leads to overheating if the amps are too high. The amount of amps is relative to the load you put on your motor and esc settings. Voltage just controls max rpm.
Also a 12s battery under load will be closer to 45 - 48 volts, so the 48v ratting is actually 12s.
If its rated at 15a x 48v thats 720 watts. You could easily run it at 10a x 60v = 600 watts, it would run cooler. You would just lose some low speed torque in exchange for higher top speed.
As long as the motor stays cool there is no problem. This only works with an Vesc that is constant currenting. An regular bldc controller would fry and motor by over volting it, beacuse it would instantly draw more amps than it can handle
I think what @FredrikHems said is not falsified by your statement both can be true.
I think he is talking more like 1000 volts.
But I dont think its the bearings that break first. What happens first is the bell starts to expand, then becomes unbalanced, then explodes. There is a youtube video where the do that. I think the motor rpm is like 80k - 100k they explode.
They could probably go to 150k rpm if they were designed for that. Above that I think you need oil bearings.
has anyone had succes with max’s code yet, i want to build a onewheel and make a very clear full tutorial on my youtube channel(homemade madness), but im no arduino expert
@MaxGoldenson what’s the deal with the two foot switches, is one intended for front, and one for rear? i had in mind that i’d only need one, and put it on the front foot, so i could disengage motors etc when the rear of the board is down (ie as i get on/off the deck)
Sorry, I get what you’re saying about not putting the rear down while it’s engaged (else the motor would try to drive backwards until you release the switch) that was bad phrasing on my part.
I still don’t get what the second switch does.
In my mind
Boarding:
Left foot on rear (rear down)
Right foot & pressure on front, brings front and rear level.
Slide front foot to Engage switch, board now begins to respond to tilt sensor, and adjusts motor speed according.
Dismount/dead man’s switch:
release switch ( still riding, feet still in position).
Motor stops responding to tilt, all balance manually performed by rider.
When stationary (or slightly moving for rad sparks) put the rear down.
Remove front foot.
Crowd goes wild, ladies swoon, a bald eagle sheds a single tear.
I am a little bit exited as well… But the guy from PEI SCOOTER is horrible in communitcations and shipping speed. Parcel is still not at the shipping company. I dont expect the wheel in germany within the next two weeks.
@stefanme don’t leave it! We need you to develop this!!! I was so happy the day I see you coming to this thread
@Sc0urge, the Onewheel has two sensors in the front pad to engage/disengage.
It works when you are pressing both of them then the motor engage, until there is clear, the funny part comes when you have to disengage, you have to lift your heel from the pad while you toes still pressing the another sensor and you are stationary, then disengage happens.
Hey guys, been working hard these past few weeks.
The mechanical assembly is almost done.
The hard part is the code which Im working on.
@Remieknaapen and @MaxGoldenson are also working on the same thing so might have one soon!