I need to weld a nut

eyauch · 08-24-2006, 8:47 AM

Ok not my nut but a nut on the back of my forks.

The track bike I just bought has had the one and only Pinch bolt (under the axle) stripped. I tried working with the Heli-coil kit but had less faith in it the more I worked with it. Now my new theory is to try and have a nut welded on the backside of the fork. Than run a long enough bolt through. Any thoughts on this? Is it safe to weld on the fork? Should I try and tap the hole to the next size bolt? It was an M8 x 1.25. (goto a M9?)

FrenchieR6 · 08-24-2006, 9:07 AM

Your title got me to check this thread out

Glad you point it out that you were talking about bike nuts.

eyauch · 08-24-2006, 9:13 AM

Quote:

Originally Posted by Frenchier6

Your title got me to check this thread out

Glad you point it out that you were talking about bike nuts.

I should have known you would reply to this thread, thankfully I came out unscathed

Johnny Diablo · 08-24-2006, 9:20 AM

Tap it all the way through using the same size tap and use a longer bolt? If it is stripped all the way through then just slap a nut on the end sticking out and safety wire it?

Edit... take it to a machine shop for professional heli coiling

eyauch · 08-24-2006, 9:45 AM

Quote:

Originally Posted by Johnny Diablo

Tap it all the way through using the same size tap and use a longer bolt? If it is stripped all the way through then just slap a nut on the end sticking out and safety wire it?

Edit... take it to a machine shop for professional heli coiling

Good call. But safety wiring a nut could be tricky I think. I have done the heads of bolts but not a nut. Is that possible?

Baketech · 08-24-2006, 9:50 AM

Probably not the best fix, but you could use a castle nut until a permanent repair or replacement....

sheepofblue · 08-24-2006, 11:00 AM

Or nylon lock nut. Or Red Loctite. Or a cotter pin beyond the nut to keep it from backing of (still could loosen) Or a cotter pin through the bolt and nut (would prevent torqueing though)

eyauch · 08-24-2006, 11:20 AM

Quote:

Originally Posted by sheepofblue

Or nylon lock nut. Or Red Loctite. Or a cotter pin beyond the nut to keep it from backing of (still could loosen) Or a cotter pin through the bolt and nut (would prevent torqueing though)

Yeah I thought of that to. I would like to be able to torque it again though. Hmmmmmm........

sheepofblue · 08-24-2006, 11:36 AM

Quote:

Originally Posted by eyauch

Yeah I thought of that to. I would like to be able to torque it again though. Hmmmmmm........

If you torque it then drill it will be close (but not the same) Personally I would use red loctite with a cotter pin beyond the bolt to ensure it stays on.

CBR929RE · 08-24-2006, 5:56 PM

I think what Bake was saying is that you put a long bolt all the way through, put a castle nut on the end and drill a hole in the bolt and slide a cotter pin in (just like how Suzuki does their rear axles). you could also safety wire the bolt/nut instead of using the cotter pin if you choose.
and of course throw some red loctite on there.