Russell
1 MW
I was looking for another front geared motor when I ran across this YOUE motor on Aliexpress;
http://www.aliexpress.com/item/36V-48V-250W-High-Speed-Brushless-Gear-Hub-Motor-E-bike-Motor-Rear-Wheel-Drive-YOUE/1888938628.html
I already own a high speed 9.0 RPM/V MXUS geared motor from E-BikeKit which is installed on my Jeep Comanche bike and though it's a tad fast for a 700C wheel I became happier with it as I got into cycling shape over the summer. I also have a 6.4 RPM/V ("201rpm") Cute Q100 installed on my flatbar road bike ( http://endless-sphere.com/forums/viewtopic.php?f=6&t=62934 ) but it's kinda slow on 36V (18mph). So I wanted something that was in between those two motors speed-wise and I wanted it in black. The vendor said it would spin at 33 km/h (20.5mph) in a 700C wheel and yes I could have it in black so I ordered one.
The motor was shipped in a few days and arrived quickly at my door. I did not have a rim or spokes for it but I tossed it on the front forks of my bike and spun it up. It clocked in at 8.06 RPM/V which is faster than I expected but should be perfect on the Nashbar with 700Cx32mm tires.
As of today I am waiting on the spokes yet but I figured I'd get the hardware all set. When I tightened everything down however I noticed a lot of drag when I turned the motor by hand. It spun just fine with the hardware loose so something must have been binding. This is when I found a problem with this manufacturer's design, they machined the axle with flats all the way down to the bearings. Here is a picture of another motor I ordered at the same time and just got yesterday.
View attachment 3
And here is the YOUE:
This nut only catches a couple of threads and with enough tightening torque on the outside nut could easily strip. I will have to see if I can find another nut like it to act as a jam nut.
The right side also had a similar problem.
The motor now spins freely unless I really torque the outer nuts. It's not ideal but the best I can do with the flawed design. (see retraction below)
A big reason I wanted to try this motor besides the speed being just about perfect was the fact that it could be easily disassembled by removing 6 screws. I did take it apart and found very little grease applied. The outer ring gear had no grease on it whatsoever and the planetary gears only had small dabs. I did not take any pic's but it looks pretty much like a like a Bafang does inside.
The spokes are on their way so as soon as I get them I'll build the motor into a wheel and test it out.
-R
http://www.aliexpress.com/item/36V-48V-250W-High-Speed-Brushless-Gear-Hub-Motor-E-bike-Motor-Rear-Wheel-Drive-YOUE/1888938628.html
I already own a high speed 9.0 RPM/V MXUS geared motor from E-BikeKit which is installed on my Jeep Comanche bike and though it's a tad fast for a 700C wheel I became happier with it as I got into cycling shape over the summer. I also have a 6.4 RPM/V ("201rpm") Cute Q100 installed on my flatbar road bike ( http://endless-sphere.com/forums/viewtopic.php?f=6&t=62934 ) but it's kinda slow on 36V (18mph). So I wanted something that was in between those two motors speed-wise and I wanted it in black. The vendor said it would spin at 33 km/h (20.5mph) in a 700C wheel and yes I could have it in black so I ordered one.
The motor was shipped in a few days and arrived quickly at my door. I did not have a rim or spokes for it but I tossed it on the front forks of my bike and spun it up. It clocked in at 8.06 RPM/V which is faster than I expected but should be perfect on the Nashbar with 700Cx32mm tires.
As of today I am waiting on the spokes yet but I figured I'd get the hardware all set. When I tightened everything down however I noticed a lot of drag when I turned the motor by hand. It spun just fine with the hardware loose so something must have been binding. This is when I found a problem with this manufacturer's design, they machined the axle with flats all the way down to the bearings. Here is a picture of another motor I ordered at the same time and just got yesterday.
View attachment 3
And here is the YOUE:
This nut only catches a couple of threads and with enough tightening torque on the outside nut could easily strip. I will have to see if I can find another nut like it to act as a jam nut.
The right side also had a similar problem.
The motor now spins freely unless I really torque the outer nuts. It's not ideal but the best I can do with the flawed design. (see retraction below)
A big reason I wanted to try this motor besides the speed being just about perfect was the fact that it could be easily disassembled by removing 6 screws. I did take it apart and found very little grease applied. The outer ring gear had no grease on it whatsoever and the planetary gears only had small dabs. I did not take any pic's but it looks pretty much like a like a Bafang does inside.
The spokes are on their way so as soon as I get them I'll build the motor into a wheel and test it out.
-R