Pulled the PowerPro Trigger
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JPG
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- Location: Lexington, Ky (TAMECAT territory)
Re: Pulled the PowerPro Trigger
Blame that on inertia!
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╟JPG ╢
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
╟JPG ╢
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Re: Pulled the PowerPro Trigger
neal560sl,
If you have never done so, you might want to call Shopsmith and describe these symptoms; they may be able to guide you to a better set of digital calibrations. I'm one of the early PowerPro owners who got "rapping noise" behavior on my sanding disk right out of the box. After a session on the phone with SS, they had me calibrated for a nice smooth operation.
If you have never done so, you might want to call Shopsmith and describe these symptoms; they may be able to guide you to a better set of digital calibrations. I'm one of the early PowerPro owners who got "rapping noise" behavior on my sanding disk right out of the box. After a session on the phone with SS, they had me calibrated for a nice smooth operation.
Re: Pulled the PowerPro Trigger
Thanks for the info, when it gets warmer up here I may try giving them a call. My shop is not heated and we are heading back into the zero and below temps for the coming week.
Neal
Mark V 500, Mark V 500 Power Pro, SS mounted Planer, Jointer, Bandsaw, Belt Sander, Jig Saw, Nova G3, Universal Tool Rest
Mark V 500, Mark V 500 Power Pro, SS mounted Planer, Jointer, Bandsaw, Belt Sander, Jig Saw, Nova G3, Universal Tool Rest
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rjent
- Platinum Member
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- Joined: Fri Mar 14, 2014 3:00 pm
- Location: Hot Springs, New Mexico
Re: Pulled the PowerPro Trigger
Actually yes, quite a bit. Is the BS a problem child for the set screws? I will remember to check it often.JPG wrote:rjent wrote:I have never had a set screw come loose on my PowerPro FWIW ....neal560sl wrote:Yes, I have checked the adapter and it is the correct one. It also happens with the sanding disc's as well. I even rock them back and fourth when tightening the set screws to make sure they are centered. I have heard it is because of the pulseing the DC motor does to maintain the set RPM.
Run the bandsaw?
What causes it?
Dick
1965 Mark VII S/N 407684
1951 10 ER S/N ER 44570 -- Reborn 9/16/14
1950 10 ER S/N ER 33479 Reborn July 2016
1950 10 ER S/N ER 39671
1951 jigsaw X 2
1951 !0 ER #3 in rebuild
500, Jointer, Bsaw, Bsander, Planer
2014 Mark 7 W/Lift assist - 14 4" Jointer - DC3300
And a plethora of small stuff .....
"The trouble with quotes on the Internet is that you can never know if they are genuine." - Benjamin Franklin
1965 Mark VII S/N 407684
1951 10 ER S/N ER 44570 -- Reborn 9/16/14
1950 10 ER S/N ER 33479 Reborn July 2016
1950 10 ER S/N ER 39671
1951 jigsaw X 2
1951 !0 ER #3 in rebuild
500, Jointer, Bsaw, Bsander, Planer
2014 Mark 7 W/Lift assist - 14 4" Jointer - DC3300
And a plethora of small stuff .....
"The trouble with quotes on the Internet is that you can never know if they are genuine." - Benjamin Franklin
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JPG
- Platinum Member
- Posts: 35600
- Joined: Wed Dec 10, 2008 7:42 pm
- Location: Lexington, Ky (TAMECAT territory)
Re: Pulled the PowerPro Trigger
A couple of members have had 'issues' using the PP with the bandsaw.rjent wrote:
Actually yes, quite a bit. Is the BS a problem child for the set screws? I will remember to check it often.
What causes it?
IIUC, the high torque pulses from the DVR motor tends to exacerbate any slop between the motor and the 'load'. That torque occurs in both directions(think speed up and slow down). Now the bandsaw is a fairly light 'load' and the power coupler has considerable backlash. I believe the DVR controller attempts to make speed alterations first a little step, then if no change is observed, bigger steps occur. Then suddenly the slop is taken up and the speed changes drastically.(overshoots the intended speed) The controller starts over, but steps in the opposite direction. Guess what. It overshoots again. What is that doing to set screw slop?
In the extreme cases, the effect was 'banging' the drive train.
I believe SS has finished the shakedown cruise and these 'problems' have not been around for us folks getting on the boat late.
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╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
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rjent
- Platinum Member
- Posts: 2121
- Joined: Fri Mar 14, 2014 3:00 pm
- Location: Hot Springs, New Mexico
Re: Pulled the PowerPro Trigger
Very interesting.JPG wrote:A couple of members have had 'issues' using the PP with the bandsaw.rjent wrote:
Actually yes, quite a bit. Is the BS a problem child for the set screws? I will remember to check it often.
What causes it?
IIUC, the high torque pulses from the DVR motor tends to exacerbate any slop between the motor and the 'load'. That torque occurs in both directions(think speed up and slow down). Now the bandsaw is a fairly light 'load' and the power coupler has considerable backlash. I believe the DVR controller attempts to make speed alterations first a little step, then if no change is observed, bigger steps occur. Then suddenly the slop is taken up and the speed changes drastically.(overshoots the intended speed) The controller starts over, but steps in the opposite direction. Guess what. It overshoots again. What is that doing to set screw slop?
In the extreme cases, the effect was 'banging' the drive train.
I believe SS has finished the shakedown cruise and these 'problems' have not been around for us folks getting on the boat late.
I will pay close attention to the issue. I haven't used it for a few weeks, but I will monitor closely. I know digital controls pretty throughly and what you say is extremely plausible (not that I doubt you grand one
). Most of this stuff is so quick (clock cycle and response time) anymore, that they can "over react". (probably female .... 
) LOLDick
1965 Mark VII S/N 407684
1951 10 ER S/N ER 44570 -- Reborn 9/16/14
1950 10 ER S/N ER 33479 Reborn July 2016
1950 10 ER S/N ER 39671
1951 jigsaw X 2
1951 !0 ER #3 in rebuild
500, Jointer, Bsaw, Bsander, Planer
2014 Mark 7 W/Lift assist - 14 4" Jointer - DC3300
And a plethora of small stuff .....
"The trouble with quotes on the Internet is that you can never know if they are genuine." - Benjamin Franklin
1965 Mark VII S/N 407684
1951 10 ER S/N ER 44570 -- Reborn 9/16/14
1950 10 ER S/N ER 33479 Reborn July 2016
1950 10 ER S/N ER 39671
1951 jigsaw X 2
1951 !0 ER #3 in rebuild
500, Jointer, Bsaw, Bsander, Planer
2014 Mark 7 W/Lift assist - 14 4" Jointer - DC3300
And a plethora of small stuff .....
"The trouble with quotes on the Internet is that you can never know if they are genuine." - Benjamin Franklin
Re: Pulled the PowerPro Trigger
It also seems to help if ya have a NEW power coupler on the bandsaw.
SS 500(09/1980), DC3300, jointer, bandsaw, belt sander, Strip Sander, drum sanders,molder, dado, biscuit joiner, universal lathe tool rest, Oneway talon chuck, router bits & chucks and a De Walt 735 planer,a #5,#6, block planes. ALL in a 100 square foot shop.
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Bob
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Bob
Re: Pulled the PowerPro Trigger
After reading this, you may have doubts, but I LOVE my PowerPro and use it every day with no hesitation and no problems.
Yep! a new power coupler and new hubs will help, but after use these things loosen up. For example, at 900 to 950 RPM my bandsaw runs beautifully, until sawing a tight corner or re-sawing anything. It's not the bandsaw, it's the PowerPro exibiting it's way of correcting torque. I had noticed this (vibration) banging caused the set screw on the motor pulley to loosen, along with the drive hubs. Therefore some blue loctite.
Since I use the bandsaw quite a bit, I now run it using a speed reducer and setting the PowerPro at 6300 to 6500 RPM. It's a smooth operation.
Two PowerPro machines that I know of came with eccentric (off balance) pulleys attached to the motor. In other words the shaft hole was a small amount off center. Checking this by the SS factory and replacement helped in smoothing the bandsaw operation.
If you have doubts about the proper running of your PowerPro, call Shopsmith.
Yep! a new power coupler and new hubs will help, but after use these things loosen up. For example, at 900 to 950 RPM my bandsaw runs beautifully, until sawing a tight corner or re-sawing anything. It's not the bandsaw, it's the PowerPro exibiting it's way of correcting torque. I had noticed this (vibration) banging caused the set screw on the motor pulley to loosen, along with the drive hubs. Therefore some blue loctite.
Since I use the bandsaw quite a bit, I now run it using a speed reducer and setting the PowerPro at 6300 to 6500 RPM. It's a smooth operation.
Two PowerPro machines that I know of came with eccentric (off balance) pulleys attached to the motor. In other words the shaft hole was a small amount off center. Checking this by the SS factory and replacement helped in smoothing the bandsaw operation.
If you have doubts about the proper running of your PowerPro, call Shopsmith.
Octogenarian's have an earned right to be a curmudgeon.
Chuck in Lancaster, CA
Chuck in Lancaster, CA
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JPG
- Platinum Member
- Posts: 35600
- Joined: Wed Dec 10, 2008 7:42 pm
- Location: Lexington, Ky (TAMECAT territory)
Re: Pulled the PowerPro Trigger
rjent wrote:
Very interesting.
I will pay close attention to the issue. I haven't used it for a few weeks, but I will monitor closely. I know digital controls pretty throughly and what you say is extremely plausible (not that I doubt you grand one
I leave the 'grand' labels to the brothers in the state organization.
Now if that system were analog it would be underdamped. In this digital case I would call it overly quick responding.
Are you implying that females are 'under damped', or 'overly quick' or 'over reacting'.
If Admin is indeed a Lena Lerner than 'overly quick' it is. Actually tis so regardless of the name.
╔═══╗
╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
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rjent
- Platinum Member
- Posts: 2121
- Joined: Fri Mar 14, 2014 3:00 pm
- Location: Hot Springs, New Mexico
Re: Pulled the PowerPro Trigger
JPG wrote:rjent wrote:
Very interesting.
I will pay close attention to the issue. I haven't used it for a few weeks, but I will monitor closely. I know digital controls pretty throughly and what you say is extremely plausible (not that I doubt you grand one
I leave the 'grand' labels to the brothers in the state organization.
Now if that system were analog it would be underdamped. In this digital case I would call it overly quick responding.
Are you implying that females are 'under damped', or 'overly quick' or 'over reacting'.
If Admin is indeed a Lena Lerner than 'overly quick' it is. Actually tis so regardless of the name.
I don't know who wrote that .....
Dick
1965 Mark VII S/N 407684
1951 10 ER S/N ER 44570 -- Reborn 9/16/14
1950 10 ER S/N ER 33479 Reborn July 2016
1950 10 ER S/N ER 39671
1951 jigsaw X 2
1951 !0 ER #3 in rebuild
500, Jointer, Bsaw, Bsander, Planer
2014 Mark 7 W/Lift assist - 14 4" Jointer - DC3300
And a plethora of small stuff .....
"The trouble with quotes on the Internet is that you can never know if they are genuine." - Benjamin Franklin
1965 Mark VII S/N 407684
1951 10 ER S/N ER 44570 -- Reborn 9/16/14
1950 10 ER S/N ER 33479 Reborn July 2016
1950 10 ER S/N ER 39671
1951 jigsaw X 2
1951 !0 ER #3 in rebuild
500, Jointer, Bsaw, Bsander, Planer
2014 Mark 7 W/Lift assist - 14 4" Jointer - DC3300
And a plethora of small stuff .....
"The trouble with quotes on the Internet is that you can never know if they are genuine." - Benjamin Franklin