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  • Users: cavitate
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  1. cavitate

    Torque wrench capacity extensions

    I have 250ft/lbs adjustable torque wrench. I need to torque a device to 450ft/lbs. I can buy a torque adapter extension. I have no problem with the math to compute the torque, what I don't see is how do I get the length of the of the torque wrench? I know from the center of the socket, but I...
  2. cavitate

    Inductance of ferrite core inductor at low B field

    A bit of back story for context. 45 years ago in an electronics class, the instructor passed out heavy duty, 5 Henry audio Chokes to the class members, We were all told to find the inductance. We did, and the general consensus was answer was it was a few milliHenries. And we were on to the next...
  3. cavitate

    Need method to open/close a 4" vertical tube to adjust spillover level

    I have a 4" vertical thin wall aluminum spillover tube, I want the spill over tube to have two adjustments besides the full height. There is not a lot of room to make these adjustments, but probably just enough depending on solution. I have include some relevant info in the drawing. My first...
  4. cavitate

    Need to seal steel pipe with PVC pipe inside, How?

    I have as an example, an 8" pipe 6 feet tall, I want an inner 4" plastic pipe down the center with the plastic pipe out the bottom of the steel pipe. There will be a another steel pipe inside the plastic pipe. The seal must be electrically insulated for High Voltage. (10kV?) I'm using the...
  5. cavitate

    Glass to Glass adhesive that will withstand 90*C and oil submersion

    Subject line about covers it, oil type will vary, so I can't be specific. I'm leaning towards a Urethane windshield adhesive, but as of yet found no info about how oil exposure effects it. Thanks, Mikek
  6. cavitate

    Capacitors on a motor for air compressor

    My son brought home from his workplace 4 AC capacitors used on the motor of an air compressor. The air compressor will not spin but is trying. There has been a wire that shorted against the case of one of the 50uF caps, this did burn a hole in the case and some of the oil leaked. Since the...
  7. cavitate

    Please confirm my drawing of a 240V to 120V wiring conversion

    I'm trying to reassemble a 4 section double pole switch I disassembled. I need to backup and understand the internal wiring of the motor. I found a diagram of a motor that I think is wired for 240V, and then I made a drawing of what I think it would look like when changes to 120V operation...
  8. cavitate

    Wiring of a single phase forward/reverse switch

    It is a bit more complicated than that, I have disassembled a 4 section FWD/OFF/REV switch and need to reassemble it. With the pictures and drawings I have, I can wire the switch just as it was originally. The problem is putting the switch back together with the cams located properly to close...
  9. cavitate

    Baldor DC Motor info

    Looking for information about this DC motor. I have nothing so anything helps. Wiring Diagram? Please explain the terms in (parenthesis) Baldor spec 31-987-842 Frame 66CZ5830DD HP 2 (SER.F. 1.00) Volts 28 Amps 62 RPM 2600 (Wound CP) (Class FX) Cont.Duty (ENCL TENV) Thanks...

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