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Thread: More Mule then Rover?

  1. #261

    Re: More Mule then Rover?

    gotta wonder....
    this season's task was a standup mower using (2) 4 pole 1000W servo motors(mowing 2 acres a week).

    the frame used was a commercial 48" brand(gravely) that weighed 300lb alone, with
    me ,batteries,servo motors and brackets, and gas engine the weight of that task was
    greater then the mule's winter weight(with empty bucket).

    the mule is now using (4) 2 pole open-loop motor(watt rating not supplied), if the
    sabertooth 2x60 can survive the standup mower task, it should survive running (2) 2 pole motors in parallel.

    the main drive train is 10 teeth on the motor output shaft, and 30 teeth on the drive axle with 18" tires,
    the front uses 10 teeth on the motor output shaft, and 21 teeth on the drive axle with 13" tires, so they
    should respond at the same ground speed.

    using 1 sabertooth 2x60 and fused at 160Amp to power all four motors would be sweet.

    Click image for larger version. 

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    from the manual of the sabertooth 2x60
    Out of the box, the Sabertooth can supply two DC brushed motors with up to 60A each. Peak currents of 120A per channel are achievable for a few seconds.
    Overcurrent and thermal protection means you'll never have to worry about killing the driver with accidental stalls or by hooking up too big a motor.
    Last edited by Tommy_T; 4 Days Ago at 08:34 AM.

  2. #262

    Re: More Mule then Rover?

    not even going to try it...

    if I could pick the mule up and bring it back home if it fails when it's dark and -20degf outside
    then it would be worth looking at. but I currently can't.

    having two different drive systems would at least give me a way to limp back home if one fails.

    the drive never failed last winter, last failure was a 17mm axle, now using 25mm axles.
    Last edited by Tommy_T; 4 Days Ago at 04:26 PM.

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