Shopsmith Forums

everettdavis wrote:I wonder what bearings and lubricants they use in the new Dyson handheld..... using DSR motors (Digital Switched Reluctance opposed to Digital Variable Reluctance) .... 104,000 RPM. I wonder if those bearings would scale up to the large motors....
Everett

Just a guess but I suspect it might use Air Bearings.

Got my PowerPro back! Turned a pen and ran the bandsaw yesterday. Seems to be working great so far. Haven't done any routing yet.

Got a few parts replaced; lower drive belt, motor pulley, 2 ball bearings, idler shaft assembly and power supply assembly.

A note from Jim McCann was included on my shipping document saying, "Your PowerPro, after repair, ran for 32 minutes at 9500 rpm before "inverter heat" showed on the screen and power dropped, lowering the speed. This is all normal and will protect the electronics in your PowerPro headstock."

I still say there should be a mention of this "feature" in the literature.

When I ran the bandsaw on Friday it was only to cut my pen blank to length. So it wasn't for very long or a strenuous activity for the motor. Turning the pen didn't put it above 2050 rpm. Tonight I needed to resaw a piece of 1x4 pine.

I was getting a lot of jumping in the bandsaw and it just wasn't acting right. I remembered seeing a thread or 2 about the bandsaw and PowerPro so I checked there.

I took the belt cover and motor pan off to check it out. The same belt tensioning screw is falling out and 3 of the 6 holes in the casting have broken loose.

I am really not happy with the QC process now and really regretting my purchase right about now. Calling and emailing customer service in the morning. [LOUDLY CRYING FACE][ANGRY FACE][LOUDLY CRYING FACE]

At risk of getting overly technical here, but I think you got a "lemon".

I'd be asking for a brand-new replacement unit.

BuckeyeDennis wrote:At risk of getting overly technical here, but I think you got a "lemon".

I'd be asking for a brand-new replacement unit.

I am thinking the exact same thing. With a new warranty as well.

I would be sure to mention what appear to be voids behind the screw heads(the counter sink drilling exposed them in essentially all the holes).

Holy crap! Those were all poorly formed counter sinks! Went back and saw the off center countersinks in your second picture in the thread. Didn't notice them before. Looks like the screws only touched part of the metal in the case. Poorly seated screws!

Can't help you with the jumping around with a bandsaw. I'm living with that issue. That's why I use a Speed reducer for all bandsawing. My headstock runs smoothly at 6,100 to 6200 RPM. That gives the bandsaw almost 900.

Also wanted to say 2,000 RPM is way to fast for the bandsaw. Should be 950 or so.

Does your headstock have the word Sunkist anywhere on it?

charlese wrote:Holy crap! Those were all poorly formed counter sinks! Went back and saw the off center countersinks in your second picture in the thread. Didn't notice them before. Looks like the screws only touched part of the metal in the case. Poorly seated screws!

Can't help you with the jumping around with a bandsaw. I'm living with that issue. That's why I use a Speed reducer for all bandsawing. My headstock runs smoothly at 6,100 to 6200 RPM. That gives the bandsaw almost 900.

Also wanted to say 2,000 RPM is way to fast for the bandsaw. Should be 950 or so.

Does your headstock have the word Sunkist anywhere on it?

I know 2000 is too fast for the bandsaw. I use the built-in speed chart which for softwood says "1100". Hardwood says 1000 and the sticker says 900. Which is right? I used 2050 rpm to sand my pen.

I just got an email fired off to SS.

Those of us who haven been fence sitting or dreaming about getting a new Mark 7 will be watching this thread to see how Shopsmith handles this.

If I was doing the inspection, the first question would be "Who drilled these counter sinks"? In my opinion, they are all too deep. When installed, the top of the screw heads should be nearly flush with the castings.

They might also be too close to the edge but then that may be because there is not enough clearance in the casting.

Reading back through this thread, I believe that this is a Shopsmith built PowerPro installation (not a DIY) built into a recycled headstock casting. Is that correct?

Are new castings any different than previous Mark V castings?

I want in the worst way to buy a PowerPro but I can not bring myself to do so with these problem reports. If I spent $2000 on a PowerPro and then had these problems or anything similar, I would never hear the end of it.