Sticky thread index for "E-Bike Non-Hub Motor Drives"

[spinningmagnets]

Please be patient as this information storage will be organized over time. Any moderator may feel free to unlock and expand/re-arrange/improve as you see fit...

Large motors, most common (non RC)

"Bottom Bracket Standards and Bafang mid drive motors" (this post is actually quite useful for many other mid drives too)
viewtopic.php?f=28&t=80319

"Lightning Rods mid drive kit" (spinningmagnets, 118 pages)
viewtopic.php?f=28&t=57720

"GNG, 1000W 48V BB-drive, $400" (spinningmagnets, 139 pages)
viewtopic.php?f=28&t=42785

"New Bafang Crank-Drives [BBS01/BBS02]" (d8veh, 168 pages)
viewtopic.php?f=28&t=50104

"LMX P2 : Freeride trials motorcycle frame development" (bzhwindtalker, 19 pages)
viewtopic.php?f=28&t=57668

"Bafang BBSHD, 1000W, 68mm-120mm BB"
viewtopic.php?f=28&t=68110

Cyclone 3000W
viewtopic.php?f=6&t=74166#p1119118
viewtopic.php?f=28&t=69867

Various hub motors mounted as a non-hub
"The mid drive hub motor media group"
viewtopic.php?f=6&t=38553

"Powered Push Trailers"
viewtopic.php?f=6&t=9855

Converting a car alternator into a motor
https://www.youtube.com/watch?v=IKqy3rRWJQE

[spinningmagnets]

RC motors and ESCs

"RC electric brush cutter"
http://endless-sphere.com/forums/viewto ... =1&t=22874

RC pulley drive on the rear wheel, 3D-printed pulleys
viewtopic.php?f=1&t=71159&start=275#p1275500

[spinningmagnets]

Friction Drives

"Commuter Booster - <1kg Friction Drive" (adrian_sm, 53 pages)
http://endless-sphere.com/forums/viewto ... 28&t=22187

"An Advanced Friction Drive System" (kepler, 18 pages)
http://endless-sphere.com/forums/viewto ... 28&t=16550

Zibbys friction drive (this thread has become a friction drive index)
viewtopic.php?f=28&t=14403#p214997

[spinningmagnets]

Misc links of interest to non-hub builders

"Wheel diameter to speed/RPM chart"
viewtopic.php?f=28&t=16114

calculator, motor RPMs, gear ratios, and wheel speed.
https://electricscooterparts.com/motorw ... ratio.html

(Hubmotor as a mid-drive, 4 pages) "The Mid Drive Hub Motor Media Group"
viewtopic.php?f=6&t=38553

"2-speed systems (R-D, dog-clutch or derailleur changing)"
viewtopic.php?f=28&t=8644

"Thuds DIY 2-speed gearbox"
viewtopic.php?f=28&t=8644&p=195730#p195730

"DIY 3-speed transmission"
viewtopic.php?f=28&t=48731

"Fitting freewheels to splined freehub drivers" (Miles, 25 pages)
viewtopic.php?f=28&t=13532

"Strong freewheeling crankset" (full-throttle, 13 pages)
viewtopic.php?f=28&t=47618

"Mounting TWO freewheels on one rear wheel hub"
viewtopic.php?f=28&t=13862

"Freehub Body Options for Dual Freewheels at the Rear Hub"
viewtopic.php?f=28&t=22592&p=329167#p329167

"Fitting freewheels to splined freehub drivers" (26 pages, also info on SRAM dual drive)
viewtopic.php?f=28&t=13532

[mechhead]

A new motor I spotted, let me know what you lot think.

Here are the specs listed at the link below I suspect they are a little over the top in terms of continuous power ratings in hot weather but the specs look good for minimal reduction need. I may get one to test out, I have an enquiry pending to see if I can get more specs like
magnet type?
dynamic balance ?
stator laminate thickness ?
magnet retainers ?
back iron thickness ?
air gap ?
poles /slots?

2016 hot sale MP10850 50KV brushless motor 15Nm toruqe for electric bike, electric bicycles and electric go-karts.

Specifications：
MOTOR: MP10850
KV: 130, 80, 50
MAX POWER: 6KW-7KW
WIRE WINDS:
MAX AMP:150A
ESC: 150/200A
MAX VOLT:18S
NO LOAD current: CURRENT (20V) 1.1A
RESISTANCE (mOhm): 210
SIZE: 108 x 50( without shaft )
Stator: 100*24mm
WEIGHT (g): 1.4kg
SHAFT: 12mm

https://wholesaler.alibaba.com/product- ... .30.LWZT5T