Weird hub motor. How does it work?

alfantastic · Jul 24, 2014

Spotted an electric bike on eBay with a weird looking motor.

Raleigh Select Five Electric Bike

If you zoom in on the third photo, you can see the motor unit more clearly.
It appears that the facing cover, with the power cable, stays static, while the wheel part moves independently from this.

Any ideas of the internal workings of this motor?

Tench · Jul 24, 2014

Looks like an electric version of the original hub motor the BSA winged wheel.

alfantastic · Jul 24, 2014

Tench said:
Looks like an electric version of the original hub motor the BSA winged wheel.

Hey, it does a bit :lol:

Ypedal · Jul 24, 2014

looks like an old Sanyo model i remember from years ago.. Rick Kosiorek (rip) took one apart and had pictures floating around...

Ypedal · Jul 24, 2014

http://endless-sphere.com/forums/viewtopic.php?t=2744&postdays=0&postorder=asc&start=0

spinningmagnets · Jul 24, 2014

Wow, you guys are fast...I screencapped it and put a red circle around the motor. I suspect it is a brushed inrunner that is heat-sunk to the side-plate, with 24V SLA in the downtube. Ypedal, I agree on the Sanyo you linked to...same patent?

Here's the 1989 Hercules Electra from Germany (its a factory electric conversion from an long-standing 2-stroke gasoline model that dates from the 1930's)
http://www.electricbike.com/e-bike-patents-from-the-1800s/

docnjoj · Jul 24, 2014

Supposedly the Sanyo was from the Rabittool design from good ol' USA. It uses belts and wheels and maybe an oil bath. I covet one, at least I used to. Very quiet, I understand.
otherDoc

Yep! Just saw ypedals link to Ricks amazing post.

Weird hub motor. How does it work?

alfantastic

10 kW

Tench

100 kW

alfantastic

10 kW

Ypedal

Moderator

Ypedal

Moderator

spinningmagnets

Moderator

docnjoj

1 GW

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