Bafang specs swx serie motors

[Dansau74]

Hello
I have been searching around to find some specs on the swx series motor from bafang.
I have been looking on a specific motor which is labeled 8FUN swxk36v250w(10) and I would like to know the kv.
I have found some info on motor code on the bmp, but don`t know if that transfers to the swx
Can anyone point me in the right direction?

 

[spinningmagnets]

I found a spec where it is rated for an unloaded 170-RPM @ 36V (250W = 7A)

Kv would be = 4.7-RPM/volt

in a 26-inch tire, 170-RPM is 13-MPH/21 km/h
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There may be a 201-RPM @ 36V version. If yes,

Kv would be = 5.6-RPM/volt

in a 26-inch tire, 201 RPMs is 15-MPH/25 km/h
________________________________________
respective speeds at 48V would be roughly 30% faster.

 

[d8veh]

Hello
I have been searching around to find some specs on the swx series motor from bafang.
I have been looking on a specific motor which is labeled 8FUN swxk36v250w(10) and I would like to know the kv.
I have found some info on motor code on the bmp, but don`t know if that transfers to the swx
Can anyone point me in the right direction?

Could we see a photo of or a link to the motor? I've seen some BPM motors marked as SWX, so the markings don't really mean much. The (10) is significant though. if it were a 36v BPM, it would be 315 rpm.

 

[Dansau74]

Link to the motor
http://www.ebay.de/itm/Radnaben-Mot...DAKxO8dF7%2Fg%2BSvk28%3D&orig_cvip=true&rt=nc

 

[spinningmagnets]

The link only shows "Dieses Angebot wurde beendet."

Is it this motor? http://endless-sphere.com/forums/viewtopic.php?f=16&t=51237

Does it look like one of these?

Bafang SWXH
spoke pitch circle diameter: 120mm
This unit has a sideplate that must be unscrewed to access the internals, which is difficult and requires a special tool.
http://endless-sphere.com/forums/viewtopic.php?f=6&t=47139&p=732717#p732717
http://endless-sphere.com/forums/viewtopic.php?f=2&t=9969&start=25#p154389
The small hub from Ampedbikes appears to be identical to the SWXH
http://endless-sphere.com/forums/viewtopic.php?f=3&t=62056&p=926839#p926939
_____________________
Bafang SWXK (SWXK5 is better for a disc brake)
spoke pitch circle diameter is 121mm
4.7-Kv (170-RPM @ 36V)
http://daniel.weck.free.fr/BromptonBafangTongxin/IMG_3818.jpg
http://endless-sphere.com/forums/download/file.php?id=55353
This 350W front-only hub locates its wire exit in the side plate on the right, as opposed to the common route through a hollow axle.
http://www.pedelecs.co.uk/forum/threads/diy-stage-1-received-bafang-tongxin-kits-photos.4682/
poles: 18

diassembly video: https://www.youtube.com/watch?v=kpBXKPdPAfY&list=UUk49CL_1nnuKdg86L5_-4Fg&index=32

 

[d8veh]

The motor in the photo looks like a SWXK5. They're available in different speeds. Normally, they spin to about 230 to 250 rpm with a 36v battery at about 40v. If I were to bet though, I'd stick with the code 10 being 315 rpm at 36v.