Chain Loops and cutting teeth?

  • Thread starter Thread starter Forester Parts
  • Start date Start date
  • Replies Replies 55
  • Views Views 8K
Interesting, Al, I wish I had know of your method.. The problem was with the starting torque to get big 36" wheels turning. if I spun the upper wheel to get it going, it carried on. I do miss the very audible hum from the motor.
 
Since we skewed off the chain for moment ,here's what you probabley had .A real old motor like that probabley just had a start winding with no start capaciter to help it out .Otherwise it would have started.It just wouldn't put out quite the power once it reached operating speed .

Here's how it went historically .It started out as 110/220 ,then they put a boost on the lines and it went to 115/230 then eventually to what it is today,120/240 .Cap start motors will operate on any of them from 208 to 240 .208 being phase to phase on 120/208 3 phase wye .The lower voltages of the range will result in a slight power lose but because of the sizing of motors it would not be noticeable .

Motor ratings are confusing and it would take an entire thread to really get down to brass tacks so I'll stop at that and get back to the chain .If it every comes up again ,just shout it out ,if I can't get it I'm sure E can .
 
I was under the impression that motor voltage can be above or below the motor rating by 10%, with little in the way of problems. Theoretically, that would allow a 220V rated to perform in a 200V system, I take it. The motor worked fine in the states with 220. At 200, the start up torque wasn't sufficient. It was getting on to being an ancient motor, as mentioned. 60 cycles for both systems. I doubt it had a starting capacitor, as you have surmised. Perhaps that is essential for a situation like a heavy bandsaw, when dropping down in voltage.
 
Back
Top