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Recent content by retred

  1. retred

    Induction Motor data - what is correct

    Many years ago we would resort to plain old physical data. Pull a power meter off the shelf and measure the input of reactive loads. If muiti-phase caused a problem in motors we would simply ask the source for torque at rated rpm for a motor of rated horsepower. This some times got some...
  2. retred

    motor wireing

    The motor runs---low torque. Name plate lists 8.3 amps. Motor has square housing, open frame. I ran into the same problem with the mdl #. Maybe I need to do some more work with the ohmmeter, and isolate the windings. Maybe experiment with a capacitor. the listed speeds on the plate are 1725...
  3. retred

    motor wireing

    I have a nice emerson 3/4 horse two speed motor. Got it to run, but weak. wires: blu, red, blk, brn, and wht. mdl# is emerson s67pxerr-5231 would welcome help. Thanks, Retred
  4. retred

    kW Savings From Replacing Oversized Motor

    I know this is great fun, and good practice, but why not just give the manufacturer your requirements, and ask "what do you have which will effiecently do this at the lowest operating cost?"
  5. retred

    Themocouple in noisy environments

    I have a lot of experience with thermocouples in aircraft. I worked on radial engines in the forties (WII), and was an a/c instrument mech in the 50's. The thermocouple ring went directly under the sparkplug as you would normally use a copper seal. The leads went directly to an analog cyl temp...
  6. retred

    nicad electrolyte

    I have a 24 cell wet-cell nicad of unknown manufacture which has been stored with the cells empty and a shunt across the output. I now have a need for it. My problem is the electrolyte. I think that the mix is about 70% disstilled water and 30% potassium hydroxide. But, from what I can find...
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