Replies

1. 
   DougF | Apr 10, 2003 06:24pm | #1

   Several thoughts come to mind: is the belt glazed from the previous problem; and, are you sure the new key is still in the slot?  You didn't really give the diameter of the original pulley but my guess is a 1/2" difference will make a difference but not to the degree that you report.  I also wonder if when you lost the key you created a "no load" speed and that damaged the motor somehow. 

   Doug 

1. 
   Loren | Apr 10, 2003 07:45pm | #2

   No the belt isn't glazed. It may well be though that the motor is damaged. It sounds as if its just not spinning at 3450 RPM. Is there anything I can do besides get a new motor? I think the original pulley was the same size...or at least within 1/2" Loren

1. 
   DougF | Apr 10, 2003 08:01pm | #3

   Loren,

   I'm out of my element now.  Depending on the manufactor/size (hp) /replacement costs, it may or may not be worth having a repair shop test it for you to see if it is a problem with the windings or a more simply problem of a blown capacitor or other circuitry issues. 

   If the arbor was damaged, as you previously indicated,  you may have additonal vibration due to a less than perfect seating of pulley that, while it may not affect the motor directly, it certainly does reduce the overall transfer of power to the blade.  

   Doug

2. 
   forestgirl | Apr 11, 2003 06:31pm | #4

   I took an old Jet motor into a motor shop a couple years ago.  It turned out to not be worth repairing, so I got to see it disassembled in its coffin when I picked it up.  The burnt windings were very obvious.  Big mat of copper, a good bit of which was burned black.

   I don't know how difficult it is to get in an look at the windings, maybe someone here does, but if you can take a peek inside without messing it up, you could check it at home.

   forestgirl -- you can take the girl out of the forest, but you can't take the forest out of the girl   ;-)

3. 
   RANGERP75R | Apr 11, 2003 07:41pm | #5

   loren

      Do you know for a fact the blade is not slipping on the arbor and not truly spinning at 3450 rpm?

      If not, try this. Take the blade off and color the inner rim portion of the arbor hole with paint or a colored magic marker. After it drys, replace it and run a piece of stock through. Take it back off and see if the paint or coloring has been worn off inside the arbor rim on the blade. Some will due to friction as you put on or take it off. If it's slipping, all the area that touches the arbor will be gone.

   Just a though...

   sarge..jt

1. 
   Loren | Apr 11, 2003 08:00pm | #6

   Wow thats a great idea! I'll try it tonight and let you know. I'll also try to take the cover off the motor to have a look at its innards. Thanks for the help guys! (you too, forestgirl!) Loren