I can't believe this.. brand new motor seized after 1 mile..
Sent a message to bonnie about this and will update with the details, but i disassembled this motor to show you the carnage because i figure i won't get a proper refund..
[youtube]RKcVCfSWnKo[/youtube]
First off, you can forget removing the disc brake screws, as they open a hole in the motor..
View attachment 7
Since this thing was toast, i unscrewed the case the destructive way after failing to get enough grip to remove this with rubber..
![YTW06_2.jpg YTW06_2.jpg](https://endless-sphere.com/sphere/data/attachments/130/130728-00bfe3eed8ee15ced0f8d990e044dbed.jpg)
Almost no lube anywhere.
![YTW06_3.jpg YTW06_3.jpg](https://endless-sphere.com/sphere/data/attachments/130/130729-3eef6da97eeeed7ae2e18a681a7bb6e6.jpg)
1 screw was incredibly loose and had almost no thread lock on.. another screw had threadlock and was medium tight.. the last one..
Oh man, i really tried with my largest screwdriver in the shop. That thing is on there GOOD.
View attachment 4
Here is the baby sized stator and gear assembly.
View attachment 3
The metal shaving crop inside the case was pretty plentiful.
![YTW06_6.jpg YTW06_6.jpg](https://endless-sphere.com/sphere/data/attachments/130/130730-8ca702f40bad3c12e2bc980c9095cfe1.jpg)
Multiple stripped screws from the factory, plus some questionable soldering..
![YTW06_7.jpg YTW06_7.jpg](https://endless-sphere.com/sphere/data/attachments/130/130731-626084cbb4cc3decbdc269bb27b50d72.jpg)
This is probably the culprit for the wheel seizing. The two sections were installed crooked. There are metal shavings on many of these long screws have strips of metal and/or shavings on them. I know what this means.
![YTW06_8.jpg YTW06_8.jpg](https://endless-sphere.com/sphere/data/attachments/130/130732-301c3a5d96ecfdc017f5ec7603ce4cf6.jpg)
A couple other notes..
If you move this motor side to side, you can hear things knocking around inside. It did this before the first mile.
There are no spring washers on the outer ends of the case to prevent this kind of knocking about ( MACs have this )
There is play in the axle. I believe this is a 2 piece axle design, like the Bafang G310. The link between the two axles is 6 screws that are pretty thin. I doubt there is enough metal contact to prevent the axle from bending over time or during a harsh impact.
Mine appeared to not be straight right out of the box, but it was hard to eyeball it..
I had to shave the axle nut down so that it fit in a 135mm dropout with minimal bending of aluminum chainstays. The axles are perfectly 135mm wide, but the axle shoulder is improperly machined ( tapered, not flat ), and a 7 speed freewheel will contact the frame if you do not use the included nut.
The axle nut will probably sit at an angle. I hand filed it to within +/- 0.5mm flatness and it managed to damage the threads on the hub anyway.
So i would not buy this motor even if you manage to not get one that's 'built on a friday' like mine.
Sent a message to bonnie about this and will update with the details, but i disassembled this motor to show you the carnage because i figure i won't get a proper refund..
[youtube]RKcVCfSWnKo[/youtube]
First off, you can forget removing the disc brake screws, as they open a hole in the motor..
View attachment 7
Since this thing was toast, i unscrewed the case the destructive way after failing to get enough grip to remove this with rubber..
![YTW06_2.jpg YTW06_2.jpg](https://endless-sphere.com/sphere/data/attachments/130/130728-00bfe3eed8ee15ced0f8d990e044dbed.jpg)
Almost no lube anywhere.
![YTW06_3.jpg YTW06_3.jpg](https://endless-sphere.com/sphere/data/attachments/130/130729-3eef6da97eeeed7ae2e18a681a7bb6e6.jpg)
1 screw was incredibly loose and had almost no thread lock on.. another screw had threadlock and was medium tight.. the last one..
Oh man, i really tried with my largest screwdriver in the shop. That thing is on there GOOD.
View attachment 4
Here is the baby sized stator and gear assembly.
View attachment 3
The metal shaving crop inside the case was pretty plentiful.
![YTW06_6.jpg YTW06_6.jpg](https://endless-sphere.com/sphere/data/attachments/130/130730-8ca702f40bad3c12e2bc980c9095cfe1.jpg)
Multiple stripped screws from the factory, plus some questionable soldering..
![YTW06_7.jpg YTW06_7.jpg](https://endless-sphere.com/sphere/data/attachments/130/130731-626084cbb4cc3decbdc269bb27b50d72.jpg)
This is probably the culprit for the wheel seizing. The two sections were installed crooked. There are metal shavings on many of these long screws have strips of metal and/or shavings on them. I know what this means.
![YTW06_8.jpg YTW06_8.jpg](https://endless-sphere.com/sphere/data/attachments/130/130732-301c3a5d96ecfdc017f5ec7603ce4cf6.jpg)
A couple other notes..
If you move this motor side to side, you can hear things knocking around inside. It did this before the first mile.
There are no spring washers on the outer ends of the case to prevent this kind of knocking about ( MACs have this )
There is play in the axle. I believe this is a 2 piece axle design, like the Bafang G310. The link between the two axles is 6 screws that are pretty thin. I doubt there is enough metal contact to prevent the axle from bending over time or during a harsh impact.
Mine appeared to not be straight right out of the box, but it was hard to eyeball it..
I had to shave the axle nut down so that it fit in a 135mm dropout with minimal bending of aluminum chainstays. The axles are perfectly 135mm wide, but the axle shoulder is improperly machined ( tapered, not flat ), and a 7 speed freewheel will contact the frame if you do not use the included nut.
The axle nut will probably sit at an angle. I hand filed it to within +/- 0.5mm flatness and it managed to damage the threads on the hub anyway.
So i would not buy this motor even if you manage to not get one that's 'built on a friday' like mine.