Diameter is same as yours I guess, it's what QC calls a 10 inch motor.evo1087 wrote: ↑Aug 28 2020 2:01amWhat diameter is your hub motor on your scooter/moped? Mine is 8” on 10” wheel. I can only run 7kw for 15 minutes before the phase wires are heat to 60 celcius. Im thinking of some 0w oil in there or maybe glue on some ugly heat sinks as a last resort. I can achieve 80kph @67v with flux weakening. Im thinking of trying 80+v and less amps. The acceleration will suffer probably, but maybe I can generate less heat and more top speed? Do you know any chinese controller with variable regen? All I know is the ASI Bac controller line designed in Canada and (from what i’ve heard) made in China and sold for $1600 with control of tune and $1000 with a fixed tune setting. I think the controllers in China for 15kw are $500? Correct me if i am wrong.
60Celsius isn't a lot, those motors can take 90degree C reliably, some people are less cautious than I am and even push them up to 100 degree or more.
Go for a higher voltage is always a good solution as long as you can find a powerful controller in your price range. It should indeed lower the current a bit, thus lowering the temperature.
I know some chinese controllers with variable regen, but I do not know any I could recommend. Some are really good products but with a horrific customer service, some other are simply bad products. I find variable regen to be a bit of a gadget personnally. I'd say dont focus too much on that and take this option as a bonus, I'd rather focus on reliability, performance and quality of the throttle feeling. To be honest right now there is no controller I could really recommend anymore.