Shopsmith Forums

dusty wrote:
You have reported that at least one of your wheels is new from Shopsmith and certified to be OK. With that in mind---I am stumped.

Yep, brand new set... to replace another brand new set...

I have reported the issue to Shopsmith and included the link to my video. I'm looking forward to seeing what they think.

So now we decided it was lunch time before we head out to the post office, Menard's and a walk. That's OK as I had time to get a tripod out and redo the video.

https://youtu.be/1f-Oywebzw8

Now I really have to go...........

Ed

gatheringsplinters wrote:

dusty wrote:
You have reported that at least one of your wheels is new from Shopsmith and certified to be OK. With that in mind---I am stumped.

Yep, brand new set... to replace another brand new set...

Frown not. This too can be made right.

Let us think about what we can assume to be correct.

The lower wheel comes with the shaft - is that correct? If so why does the tire appear to be skewed.

I do not think 'any' wobble will cause the blade to jump the groove. The blade will seek the path of least resistance and will likely follow a straight(circular) path on the wheel.

Have we determined the blade is not kinked?

Is the dual bearing set dead on to the tangential path of the blade and perpendicular to it?

If the blade is first pulled out slightly away from the bearings, then does the blade contact the two bearings at the groove and start rotating both bearings simultaneously when the blade returns to the bearings as the wheel is rotated?


I find it interesting that a wheel with a skewed tire is deemed to be 'defect free'. That is why I asked if it was the 'first' or the 'second'.

Sorry for so many ????? Hopefully the answers will provide clues.

This photo image displays the upper wheel but the same thing can be done on the lower wheel. It provides a real good visual of what the wheel is doing as you rotate it by hand.

You can check the wheel for an "out-of-round" condition at the same time.

Just a comment/observation here since I am away from my SS BSs till this weekend and can do any comparative analyzation on them to add here.
I see a lot of similarities in this thread and Power Pro Woes thread.

reible wrote:My wife is wrapping a package to drop off at the post office so I took a few minutes to do the video.

https://youtu.be/ce16RZdjDUQ

I could do a better job but you should get an idea of what mine looks like. Sorry about the other movements.... needed at least 3 hands for this.

Ed

I do not believe this is a way to determine wheel wobble. The wheels are cast. The face of the wheel is not machined so it is not a reference surface. As long as the outer machined rim (diameter) where the tire is installed and the bearing bore are concentric it doesn't matter what the rest of the wheel is doing. There is no wobble. Now if there has been warping of the wheel after manufacture or a bad bearing then that would cause wobble. But again the edges of the rim are not an indication of wobble since they are not machined to be 90* to the bearing bore.

I tend to disagree. A reference surface would be essential if we were checking for thousandths of an inch movement (wobble) but that is not the case. We are seeing something more like a 1/16" movement.

I watched the first video and I can not see the retaining clip for the lower wheel. Is it in place and properly placed. In looking at the video it appears that the lower axle is moving in and out, but it is difficult to tell for sure.
Bill V

dusty wrote:I tend to disagree. A reference surface would be essential if we were checking for thousandths of an inch movement (wobble) but that is not the case. We are seeing something more like a 1/16" movement.

Well, I also disagree. Look at the video in full screen with your best glasses. There are a lot of reflections and light issues. The tire is not pushed back against the flange nor is it parallel with the other edge of the wheel all of which produces an optical illusion that makes one think there is wobble. If you concentrate on the actual edge of the wheel and not the light reflections on the rule and the wheel there is very little movement. Probably less than 1/32".

Look at Ed's video. Almost no reflections on the wheel and a black rule.

I stand by my statement. Besides it is a new wheel from the MS.