Speed Control Knob

mfasano · Post by **mfasano** » Mon May 19, 2008 12:59 am

Just bought a very well maintained and fully loaded Mark V, but I noticed that the speed cntrol knob does not sit flush. When I rotate the speed control knob, there is obvious points where the knob is more flush than others. I loosened the set screw and removed the knob and ensured that everything was nice and tight. When I put the knob back on, I cannot seem to get it completely level and flush.

Any advice on what I am missing???

Thanks

brown_hawk · Post by **brown_hawk** » Mon May 19, 2008 8:16 am

Try this:
http://www.shopsmithacademy.com/SS_Arch ... hanger.htm

Not quite sure what you mean by "flush". If the above doesn't help, try posting a picture. If you are not sure how to do that, the way to do it is in the Community Forums at: https://forum.shopsmith.com/viewtopic.php?t=114

Hawk

johnm · Post by **johnm** » Mon May 19, 2008 11:10 am

mfasano wrote:Just bought a very well maintained and fully loaded Mark V, but I noticed that the speed cntrol knob does not sit flush. When I rotate the speed control knob, there is obvious points where the knob is more flush than others. I loosened the set screw and removed the knob and ensured that everything was nice and tight. When I put the knob back on, I cannot seem to get it completely level and flush.

Any advice on what I am missing???

Thanks

My old speed control knob didn't sit flush and the new one doesn't either. I suspect it might be wear in the shaft that drives the speed changer that the know attaches to. You also have that spring that pushes on the right side of the knob and that tends to tilt it over too.

My SS is a 1955, and I've never seen a new one, so maybe I don't know any better. Seems to work OK.

Nick · Post by **Nick** » Mon May 19, 2008 7:39 pm

"...there is obvious points where the knob is more flush than others."

Before I can help, I need to define some terms.

1. By "knob", I presume you mean the Speed Control Handle (504229). It's really a crank, not a knob or a handle, but we call it a handle in the parts catalog.

2. If this is the part you are referring to, the handle/crank/knob does not fit flush with any other part of the headstock. By "flush," do you mean that one part of the handle's rim is closer the the Speed Dial (5042259) than another part? If this is the problem, then the handle has a little wobble or "runout" to it. This is common, and it happens when the central post inside the handle is bent. The handle is made from a soft metal and if you happen to hit it on one side or drop something heaving on it, the central post may bend. You can straighten the post if you you want to, or live with it. A little runout in the handle won't affect the operation of the speed control mechanism.

With all good wishes,