kerinorton said:Even better, Ludwig drilled right through and fitted bolt when he did his head steady mod
Bob Z. said:The threaded hole in the frame tube is continuous, so one longer helicoil would be appropriate.
I have gotten real sturdy (better than original) Lord mount bobbins but they have 5/16 NC threads.
I use them on the rear muffler mounts.
Depends on what type you will replace with it may be an option at this time to re-thread the hole.
Mike B said:The same thing happened to me, just helicoil each end.
Mike B
Openroad,openroad said:1974 Commando
What are the options here?
concours said:Mike B said:The same thing happened to me, just helicoil each end.
Mike B
This is the correct answer.
I'll see if I can knock out the block, looks like slag or something.tall951guy said:Openroad:
I drilled the bolts one at a time. The first drilled hole hit something as it past the end of the bolt. The second drilled hole passed into and through the first, so I'd say "No", it wasn't blocked. In tapping it, I never saw or felt anything that would represent a blocked hole.
Looked it up from your post, actually looks better.Danno said:I would use 2 Time-Serts rather than a long helicoil. They would be a much more permanent repair.
Down the road maybe, just getting it going again, maybe in time for Sturgis.CanukNortonNut said:Openroad,openroad said:1974 Commando
What are the options here?
You could use a Dave Taylor headsteady. :idea:
Much better that the original and eliminates the need to repair your threaded holes.
I use this design and have liked it very much. I use the one with the spring system. Clubman Racing has them available. http://www.clubmanracing.com/cyclepartsnorton.php
If you want it to be original then carry on with the HeliCoil Thread repair. I have never thought much of the headsteady rubber system.
Cheers,
Thomas