Sattva Ram
100 W
- Joined
- Jan 4, 2020
- Messages
- 271
This was my bike before this. I only had hubs so far. But I realized their shortcomings. Not only the unsprung is the problem but the dismal efficiency at low rpm. (That's why I'd want the 22 inch). Scooters are really suited for hubs tho that small wheel spins like crazy.
But I also see the problem with the mid motors. Hubs are waay better freewheelers so you get back some of the wasted energy coming from the low rpm inefficiencies in regen scenarios. Plus the noiselessness. So there's pros and cons everywhere.
Aptera has hub motors. They say that axial flux hub motors are the next big thing. If you could reduce that unsprung hubs would be really good. However I dont think it'll ever happen. For AF motors are only efficient if you give them the rpm once you make a hub out of it there goes the effi.
Right now I have a scooter with friggin mid motor. I roll off the throttle and the wheel stops so fast as if it had regen. Yet zero amps are coming back. I literally have to pull the throttle even on relatively steep declines so it doesnt stop. I have no choice but to weld a freewheel onto it. That's the only way that friggin scooter will ever be good. Still wont have regen but at least it will be able to coast.
But I also see the problem with the mid motors. Hubs are waay better freewheelers so you get back some of the wasted energy coming from the low rpm inefficiencies in regen scenarios. Plus the noiselessness. So there's pros and cons everywhere.
Aptera has hub motors. They say that axial flux hub motors are the next big thing. If you could reduce that unsprung hubs would be really good. However I dont think it'll ever happen. For AF motors are only efficient if you give them the rpm once you make a hub out of it there goes the effi.
Right now I have a scooter with friggin mid motor. I roll off the throttle and the wheel stops so fast as if it had regen. Yet zero amps are coming back. I literally have to pull the throttle even on relatively steep declines so it doesnt stop. I have no choice but to weld a freewheel onto it. That's the only way that friggin scooter will ever be good. Still wont have regen but at least it will be able to coast.