Can You Change the Position of the Headstock Lock Wing Nut?

[dusty]

Getnby41 is the originator of that shim fix.

I also was doubtful: Until I tried it!

I doubted there would be enough slop in the bore for a shim. I doubted there would be enough in/out change by shimming vertically.

I tried it anyway and lo and behold!!!!!!!

The wedges do not contact the outer edge of the way tube, but below that and on the curved surface. The wedges are at a 60 degree angle from vertical. That means it takes less movement vertically to equal the effect of horizontal movement(.866/.500)[Sin60/Cos60).

I measured the pop can shims and they were actually 0.003.

So 2x0.003x2 = 0.012 is about equivalent to 0.02 horizontally.

If you 'pre curve' the shims they slide in easily from the outside. Being at the bottom, they should stay put(until raised to vertical). Need to watch for sliding 'out'.

Dusty: I think we have gone somewhere in this thread! JMHO!:)

I do believe we have but the shims are your ideal; I am more inclined to buy new wedges.

Funny thing about this: I was never bothered by the headstock lock until I read this and now it seems to be constantly in my way.

[billmayo]

Maybe the wedges did get cocked each time. I will try a different headstock tommorow making sure the wedge flat are flat on the tubes. I agree the turning the wedges should not make any change in the handle position.

I tried this today with another headstock and handle position did not change when rotating one of the wedges. I will redo the wedges in the original headstock that I used.

With out the motor installed and the headstock upside down, I was able to file the wedge angles after moving the wedges toward the center of the rod. I did not remove the handle. This did change the position of the lock handle after I did the filing. I removed the slight groove in the wedge angle. Maybe I was lucky with the final handle position which was flat.

[JPG]

I do believe we have but the shims are your ideal] I am more inclined to buy new wedges.
[/B]
Funny thing about this: I was never bothered by the headstock lock until I read this and now it seems to be constantly in my way.

No guarantees there!!!!!!!;)

I actually prefer the filing 'solution'. If the wedges are worn, I would recommend filing. Thread condition is a consideration.

Did not bother me either(still doesn't) but a puzzle is a challenge and a 'solution' is a hedge against future possible problems.