Broken Shock Stud

[Guest]

Keeping as much of the original stud would be preferable. Hitting the bottom of the hole with the tap will increase the odds of breakage.
At this point I would highly recommend tatu's fix. If that fails then weld.

 

[cowboyup3371]

I don't have a parts bike to take a stud off of so I'm working with the bolt idea. I'm going by Dayton Tool Crib tomorrow to get a 12mm drill bit since the best I can do for now is a 1/2" (12.7mm). If I cannot get the 12mm drill bit then I'll work with the 1/2" go from there.

My friend will then weld in the bolt to ensure it doesn't go anywhere. Thank you all for the help.

 

[salty_monk]

I would use the highest grade bolt you can find if you replace the whole thing. 10.9 minimum would be my thinking.

 

[cowboyup3371]

We're done with it after my friend welded in the bolt this evening. We then installed the shock and he tested it by jumping on it with all of his close to 300 pounds. I'll give it a test ride with my own 200 pounds either tomorrow or Sunday to see how it holds up but for now it's pretty solid. No, she won't be allowed on it until I have ran the bike for a few dozen miles to ensure it won't bust on her

 

[Steve]

I'd say dress up that joint with a file so the washer can fit up against it better and you will be set. :encouragement:

.

 

[tatu]

I don't have a parts bike to take a stud off of so I'm working with the bolt idea. I'm going by Dayton Tool Crib tomorrow to get a 12mm drill bit since the best I can do for now is a 1/2" (12.7mm). If I cannot get the 12mm drill bit then I'll work with the 1/2" go from there.

My friend will then weld in the bolt to ensure it doesn't go anywhere. Thank you all for the help.

It's good that you have resolved this.
Just to say that the same method can be used using an ordinary bolt, also to add that the original stud on the bike is nothing special, just plain old mild steel.

 

[Guest]

Good deal. You should be fine.

 

[Redman]

Ah... part of the fun of having a 30+ year old bike, eh...?

So, at some point here, we should have an update to the "new rider" thread.....?


.

 

[tkent02]

Looks frail to me. All of the weight is on the welded bolt, not on the thicker shoulder as it was originally. When you will find out is when you hit a big hole or something and bottom the shock hard, probably not when you want a shock mount to break off. A few dozen miles is not likely to bottom out the shock, which will put many many times the stress on that weld that a 300 lb rider does sitting on it.