what's the spindle knob for?

[Jkroofer]

9B9359E9-1558-466A-B7ED-2EF9F4DFB1AC.jpeg (106.51 KiB) Viewed 3739 times

[DLB]

I think you have at least two choices. 1) Screw extractor, either a traditional 'easy out' style where you will need to drill through the setscrew or the "Speed Out" style that grips the head. 2) Drill and thread a hole for a new setscrew at a different point, say 180 degrees away and leave the seized one where it is. For the second one I'm assuming that the seized setscrew is backed out far enough to allow rotation on the shaft.

- David

[Jkroofer]

Correct. I think I’m going to go ahead and move forward with the second option you mentioned. I’ll let you know how it goes

[Jkroofer]

Oh yeah, and never use a drill while removing set screws. Lesson learned

[JPG]

Oh yeah, and never use a drill while removing set screws. Lesson learned

WHAT???? What are screw drivers(the ones with a handle - or a bend) for???

IIWM, I would concentrate on option 1. A NEW wrench may help.

BTW you have an old style collar(a 'current' version would not have worked. Sure it is a two bearing quill????

Now an unrelated 'comment'.

Move the eccentric 'slot' from 4 o'clock to 8 o'clock. At 4 the vibration will tend to loosen the belt tension. At 8 the vibration(and torque) will tend to increase poly-v belt tenstion. '12' is towards the 'normal' top.

Oh and Tony did come through(you just needed patience to give him time do his thing).

[Jkroofer]

So basically the natural rotation is going to be in a counter clockwise direction and it will tighten up with vibration vs loosen after I move it to the other side ?

[Jkroofer]

Definitely a 2 bearing quill. I had them out.

[Jkroofer]

Going to stop by Lowe’s tonight and buy an extractor bit. Only thing is, I think I have a better chance of breaking it loose turning it forward than backing it out. But I’ll have to do what I can do. I don’t think they make extractor bits in reverse direction for tightening

[JPG]

Going to stop by Lowe’s tonight and buy an extractor bit. Only thing is, I think I have a better chance of breaking it loose turning it forward than backing it out. But I’ll have to do what I can do. I don’t think they make extractor bits in reverse direction for tightening

Then drive it into the bore. The bore is larger than the screw is long. I assume there may be some corners left.

Now I am confused re the collar.

WHICH two bearing quill do you have???

P.S. You may have luck drilling the set screw and use a tap to apply torque to the screw driving it 'in'.

[JPG]

So basically the natural rotation is going to be in a counter clockwise direction and it will tighten up with vibration vs loosen after I move it to the other side ?

No the shaft rotates in a clockwise direction thus imparting a clock wise torque to the bearing and eccentric which will tighten the tension on the poly-v belt. Clockwise rotation of the eccentric moves the wider portion of the eccentric towards 12 0'clock where it maxes out. At that point the idler shaft is maxed out distance from the drive sleeve.(max tension)