5KW or more in a 10 inch scooter rim.

[mistercrash]

I recently overhauled my scooter and put in a Kelly KLS7250D sinusoidal controller. I need a new hub motor to go with it. I've been searching for a long time and the options for 5KW and more in a 10 inch rim are very limited.

Kelly has a 6KW motor in a 10 inch rim, right now, it is the only option I can find.
http://kellycontroller.com/hub-motor-72v-6kwdisc-brake10-inch-p-41.html
I think it might be a good match for the controller but I want to hear if someone had experience with this motor, or any Kelly motors.

Thanks
Ray

 

[mistercrash]

So maybe someone can answer me this. Does a motor with two stators need two controllers to run? Or can the two stators be joined in paralle and be run by one controllerl? Sorry if this seems dum but I really have no idea and would like to know.

Thanks
Ray

 

[toolbag]

So maybe someone can answer me this. Does a motor with two stators need two controllers to run? Or can the two stators be joined in paralle and be run by one controllerl?

If the two stators are exactly aligned (very rigidly so), and the rotors are very well aligned (also very rigidly) then it could work to run the two stators and rotors on the same controller. There must be no backlash between the rotors or stators (i.e. they must be rigidly affixed to the same shaft) and they need to be aligned magnetically as well as mechanically (pay attention to winding layout and magnet polarity). The wiring between the two must also be straightforward enough not to cause crosstalk between the phases.

 

[Kodin]

http://leafbike.com/products/e-motorcycle-motor/10-inch-rim-motorcycle-motor/c-94/

Take your pick. If they are anything like the Leafbike motors, there's a lot of headroom to run at higher power levels. The 1500W 90+% efficiency hubmotor can be pushed to 3kw sustained. Maybe 4 with light mods like properly-applied statorade. That said, these are "Efficiency: ≥ 83%", meaning ~10% more energy converted to heat compared to the 1500W units. Totally different design. What are the Kelly motors running at for efficiency?

QS also makes some pretty darn badass hubs... Maxes out at 3KW for the 10" scooter types, but I've read hints that most of the qs stuff can be pushed to ludicrous power levels.

http://www.aliexpress.com/store/group/10inch-scooter-motor-800w-3000w/1389549_258009459.html

In particular, the highest end 10" looks pretty promising at a supposed 85+% efficiency.

http://www.aliexpress.com/store/pro...h-3000w-Extra-Type-V3/1389549_2021578621.html

That said, larger wheels bump up to significantly larger power levels. No way of upgrading to a larger wheel on your frame?

 

[mistercrash]

I decided to go with a 5KW motor in a 12 inch wheel, it should fit without rubbing anywhere with a small size tire like 120/60-12. Should be fun to ride.

http://qsmotor.en.alibaba.com/produ...60_45H_E_Scooter_Extra_V3_Type_Hub_Motor.html

 

[bunya]

Just noticed they had a weird dual stator version... probably too wide considering you've already check out the supplier.
http://qsmotor.en.alibaba.com/product/60311452516-801828721/QS_10inch_205_Dual_Stator_2X50H_Extra_V3_Type_Spoke_Hub_Motor.html

 

[mistercrash]

Yep, Vito at QS Motor talked to me about that one, but it is very wide and needs two controllers to run.