Shopsmith Forums

wa2crk wrote:JPG]although the ratio between the upper aux shaft and the lower one would have to be the same as the old system to retain the 60% increase at the lower (jointer) shaft.[/color] I AM NOT GOING TO TEAR DOWN MY FACTORY PP HEADSTOCK TO FIND OUT)
It works too good. Just my gut feelings, what say you?
Bill V

The parts are (essentially) the same so the ratio is also(1.6:1). The pp motor pulley is larger than the 'idler' shaft pulley. The pp motor runs slower than the output shaft. The speed ratio is fixed by the pulleys. Since there is no added electronics attached to anything but the motor/controller, it be monitoring motor speed. If it has that 'laser'(more likely an LED) then it be 'optical'. Then cleanliness is necessary for accurate feedback.

BTW Does the internal speed 'reference' refer to the aux shaft rpm's when referring to the jointer???? Does the display then match the aux shaft rpm's rather than the upper spindle speed?????

Let me go back and correct my error from two posts ago. The light used is infrared not laser.

The PowerPro manual has - in the troubleshooting section - a statement referring to "Common PowerPro Control Error Messages"

From the Manual:
"The error message is "RPS State Error 0" -
Definition: None of the receivers are sensing infra red light from the receivers.
Possible reasons:
a. Light path is blocked by dust or dirt.
b. Signal cable is broken or has a poor connection.
c. Sensors or electronic components are damaged.

Possible solutions:
a. Remove belt cover and motor pan. Use compressed air to blow dust out from under cowling where where 5-wire connection is made.
b. Check connection of the small, white, 5-pin plug between the Power Supply and Motor. If these wires are cut, they must be repaired or replaced at the factory only. Call Customer Service for shipping instruction.
c. Electronics are repaired or replaced at the Factory only. Call Customer Service for shipping instruction."

Well, a new development... now it no longer goes at all.

When I turn on the main power switch it hear a couple of clicks and the LCD backlight comes on, but no messages or beeps.

I've unplugged it for a 1/2 hour and retried it (oneway lathes sometimes need this with their DVR) but the same thing. Is there perhaps a reboot that can be done via the keypad?

Was just on hold for Shopsmith support for 25 minutes but then 5pm EST came and they just dumped the call.

Any ideas much appreciated!

Thanks- Mark

mjsworkshop - - Yes - frustration - check your Private massages

JPG40504 wrote:Anybody know if it has an optical 'speed sensor' or a hall effect(magnetic) one?

...or an optical Hall effect one? (first one I ever worked with, circa 1969)

keakap wrote:...or an optical Hall effect one? (first one I ever worked with, circa 1969)

Please explain how optics affects a magnetic sensor??????