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Adding speed control to Spreader on/off box

Discussion in 'Ice Management' started by KCGman, Dec 8, 2009.

  1. KCGman

    KCGman Junior Member
    Messages: 12

  2. mx495

    mx495 Member
    from MO
    Messages: 56

    Looks like that might work. You could just get a rheostat from an auto parts store, which is essentially just a variable speed switch and run it with an inline fuse. I wouldn't see why that wouldn't work.
  3. lilweeds

    lilweeds PlowSite.com Addict
    Messages: 1,178

    That will not work, a spreader motor can draw up to 80 amps at start up, and you'd burn out that box. Karrier makes boxes that are universal.
  4. mx495

    mx495 Member
    from MO
    Messages: 56

    I guess a small rheostat wouldn't work either then. I know the old Western controllers were just REALLY big rheostats, but I don't think you could find anything close to that at at auto store.
  5. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    A rheostat will definitely not work. You need something with an SCR or triac to control the voltage. The device you linked to should work, but I might not buy that one. The 30 amp rating is quite low, and based on the translation skills, I would question the quality.
  6. TCLA

    TCLA 2000 Club Member
    Messages: 2,696

    How'd you get so smart???
  7. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    That all happened before I started the sniffing the Yellow Paint :laughing::laughing:
  8. P.L.

    P.L. Member
    from usa
    Messages: 74

    i tried the one from ebay last year. The problem I had with it is that you need to run all of the power from the battery thru the swich and back to the motor. I wanted my switch in the cab so it was a long run for the power and by the time it got back to the motor it was gone. I was using heavy wire too. There may be another way to hook it up, but the way I did it did not work.