Sanding disc comes loose.

[JPG]

While reading this post it reminded me of how little we know about the electronics of the powerpro.

One might guess that if you go to "bandsaw" on the chart and use the list to adjust the final speed setting that the machine now "knows" a bandsaw is installed and has a routine for that. But if you just use the speed setting to get to what you think is the proper speed then the program has no idea what is attached. Would it then react differently? I certainly do not know if that is a fact or not.

Like wise have have seen a well versed shopsmith seller say that the lathe reacts to "catches". How does it know that was a catch or something else happening? I could see that if you used the chart for lathe to do the set up but again if you just use the up/down power setting????



I'm like to know more about this but I don't believe we are going to get much out of shopsmith on the subject.

Ed

I admit my post was assuming of this. I admit to 'uninformed' conclusions as well.

I may be assuming too much.

It may very well be that all things are using the same parameters. Perhaps speed range alters the assumed parameters.

In any event it does monitor speed and torque demands by the load.

I assume the lathe catch reaction is the result of increased torque load(rapid speed deceleration).

I think the bandsaw has a 'problem' due to it's low torque load. I think the program tries to sense when less power is 'adequate' by gradually decreasing speed until it detects a change. Then it bumps the speed to get back. With a low torque situation, the detection will be slow and the bump excessive.

As you said, we really do not 'know' and all this is educated(hopefully) guessing.

[JPG]

I fear we be assuming that interrogating the library of speed settings indexed by SPT also informs the control program of that 'detail'.

As Ed mentioned, if one merely sets the speed manually with or without manually bumping it faster/slower, the program is ignorant of what is being driven and can only control the detected speed.

I am sure that 300# + log is not in the programs library, yet it appears to handle it adequately(after being given a startup assist). That torque load varied per revolution due to water in one side of the tree.

I think it does remarkably well considering the great load characteristics of various SPTs. Too many are extolling it's virtues. Only a few(that we know of) have had 'issues'. Backlash seems to be a common denominator.

[Gene Howe]

Thanks, WM. It worked....so far.

You might also try just putting a drop of finger nail polish - yes, steal a bottle from your wife if you are so situated - on the threads. Let it dry. Works wonders. I use this on the threads on my Delta lathe with attachments that loosen over time.