Not quite automotive, but I am building it in the garage...

[Tsaico]

I just built a basic electric bike. 36v 21 aH electric fonrt wheel. All hooked up and over works well. The problem is the torque is so high on the wheel, it unthreads itself and the bolts holding the wheel to the forks becomes loose enough it could fall off. I tried Loctite and it worked well for about a week, then I found the loctite had broken loose too.

I torqued the bolts tight as I could, but so far, after about a half hour of use, the bolts come loose. Any ideas on what I could do?

 

[woodie1]

Use a jam nut or double nutting on each side.

 

[OILFIELDTRASH]

Know anyone that welds?

 

[exdeath]

Reverse thread bolts? Lock washer? Castle nut and lock pin?

Need to know more about the setup, where the motor is located, how the force is being transmitted etc, and analyze it from there.

Assuming the motor is in the hub and the shaft is what is bolted to the fork, so the motor housing turns CW and moves the wheel forward, the shaft/bolt is turning CCW and coming lose from the nut?

In that case you can use a lock washer that has a L shaped hook that sticks out and goes into a hole (forget what they are called) so the rotational force goes into the fork instead of rotating the bolt out of the nut, similar to what a normal bicycle wheel nut uses.

Edit: tab washer

 

[Tsaico]

Thanks all, but it turns out there is a specific part that I should be using... They call it a torque bracket. It is similar to the tab washer, but it fits on the forks that I currently have. Thread this in, (th ewheel hub's posts are slotted like this they aren't round. Then there is this little threaded hole on the forks that I then bolt on and the slot keeps the center from turning, and the bolt keeps the whole thing from spinning.

null

 

[thescreensavers]

pics of bike?