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Thread: Speed problems when reverse mounting motors

  1. Speed problems when reverse mounting motors

    I'm using 2 trico wiper motors for a simple differential drive on my robot. I have the (normal) problem in that one of the motors is reverse-placed and runs at a slightly slower speed than the other.

    I have a Sabretooth motor controller ready to go, but I doubt if this will help at all.

    I'm wondering if I can put a trim resistor in series with the faster motor, and tweak it until I can get the motors in sync.

    Then maybe replace it with a fixed resistor when I know the right value.

    Does this sound feasible?

    Steve

  2. Re: Speed problems when reverse mounting motors

    ...I almost forgot...

    Since the motors love lots of current, what kind of resistor would I need?

  3. Re: Speed problems when reverse mounting motors

    oooh!

    I just realised that you can control the motor speed independently with the Sabretooth.

    Yay! That should fix it.

    [I'm talking to myself...]

  4. Re: Speed problems when reverse mounting motors

    Well, it looks like you've figured it out. Just experiment and fix the speeds through software. Have fun!

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