help with stripped headsteady threads

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1974 Commando

After extensive sessions with penetrating oil and heat, I finally got one of the headsteady rubbers out, and most of the threads came with it! There are a few still up in there, and it does thread in. What are the options here?
help with stripped headsteady threads

help with stripped headsteady threads
 
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.
 
Once the side plates have been tightened against the head steady, the rubber mounts should then be clamped tight against the frame. They can't loosen or drop out of position (unless the engine was to drop out of the frame) so what need of a thread?
 
Good point Les.

Even better, Ludwig drilled right through and fitted bolt when he did his head steady mod. Thar was the best and most simple design I have ever seen, and have now done it to both my bikes, although I didn't need to drill right through as my threads were in good order.
Dereck
 
kerinorton said:
Even better, Ludwig drilled right through and fitted bolt when he did his head steady mod


Slightly off tack, but does anybody have any pics of the "Ludwig" head steady ?


Cheers,

cliffa
 
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.

mine seems to be blocked with some metal, this is looking in left side:

help with stripped headsteady threads

right side:
help with stripped headsteady threads


"Once the side plates have been tightened against the head steady, the rubber mounts should then be clamped tight against the frame. They can't loosen or drop out of position (unless the engine was to drop out of the frame) so what need of a thread?" L.A.B.

So maybe Loctite and tighten things up? I guess I thought they were kind of load bearing but thinking about it... pretty small bolts to carry much load.
 
I struggled with mine just yesterday. I had to make an ugly face (worse than normal) and use all of my might, and the biggest pair of vice grips I have to get mine off. Unfortunately, both bolts broke off inside the frame. I drilled them out and tapped them for a future owner since I'm going with a Dave Taylor head steady.
 
I would use 2 Time-Serts rather than a long helicoil. They would be a much more permanent repair.
 
openroad said:
1974 Commando

What are the options here?
Openroad,
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
 
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.
 
concours said:
Mike B said:
The same thing happened to me, just helicoil each end.
Mike B

This is the correct answer.
help with stripped headsteady threads

Ordered!
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.
I'll see if I can knock out the block, looks like slag or something.
Danno said:
I would use 2 Time-Serts rather than a long helicoil. They would be a much more permanent repair.
Looked it up from your post, actually looks better.
CanukNortonNut said:
openroad said:
1974 Commando

What are the options here?
Openroad,
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
Down the road maybe, just getting it going again, maybe in time for Sturgis.
 
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