Wheel bobing

[sandberg4063]

Hey guys so here's my problem I'm was trying to get my sprocket center because it bobs up and down. After looking at it more I found that the hole wheel is doing it. I don't know how to fix it. Could it be bad bearings? Bent axle? What do you think?

 

[thejoker]

Pull your axle bolt and see if it'sIis worn down on a half. I just threw a few out because of this. Could be a bent sprocket.

 

[sandberg4063]

Don't think the sprocket is bent because if it was when spinning whe wheel it would seems as if it's moving in towards the wheel then back out and it's not doing that it's going up and down

 

[thejoker]

Dose your chain get loose and tight while spinning the wheel?

 

[RobertC]

Hey SandBerg,

Welcome to the OldMiniBikes forum.

I think theJoker is heading in the right direction...sounding like you've got either something up with your axle, or your bearings are getting worn out.

When my bearings went, it did give a funny feeling when rolling, much like it was bobbing up and down. (and the chain got tight then slack each revolution).

Good luck, and let us know what you find !

again Welcome !

 

[sandberg4063]

Dose your chain get loose and tight while spinning the wheel?

Yah that's exactly what happens

 

[5horsebriggs]

i would just replaced the bearing and axles, for front and back , always a good thing to do, then you will make the chance of a surprice go down