you need nordlocks. They really do work great.azad said:Hi,
The motor shaft nut comes off of sprocket and shaft rotates inside the sprocket without the sprocket being rotated. How can I stop the nut from falling off?
azad said:Hi,
The motor shaft nut comes off of sprocket and shaft rotates inside the sprocket without the sprocket being rotated. How can I stop the nut from falling off?
Punx0r said:Is there a key in that keyway? Is the shaft and sprocket tapered?
As a first-try solution I'd thorough degrease all parts and use loctite on the threads. Blue is normal strength, red is much stronger but beware you'll need to apply heat if you ever wanted to get it apart again.
E-HP said:azad said:Hi,
The motor shaft nut comes off of sprocket and shaft rotates inside the sprocket without the sprocket being rotated. How can I stop the nut from falling off?
Is the sprocket deeper than the one that came with the motor? It looks like the nut would usually tighten up against the shoulder of the shaft where the threads end, so having it only contacting the sprocket may make the nut do the work that the key would normally do.
Balmorhea said:The shaft is right hand threaded. If it's on the right side of the bike, motor torque will be applied in in a way that tends to unscrew the nut.
Usually, this tendency would be mitigated by the key keeping the sprocket from rotating on the axle. But it looks like you don't have a key on the motor shaft. That's the part you need to fix. The retaining nut is not for keeping the sprocket from spinning on its shaft. It's just for keeping everything stacked up together.
azad said:This is how motor shaft looks.
aroundqube said:could be a half moon or Woodruff key : https://www.mcmaster.com/machine-keys
azad said:I think there isn't a key on the shaft. Yes I think shaft is tapered. It starts at 10mm and gradually increases the diameter. 11mm is the diameter of the sprocket.
scootergrisen said:There is a problem with the chain on picture 3.jpg in case you did not know.