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Thread: best motors for a robotic platform.

  1. #1

  2. #2
    spotter these on ebay a while ago should shift a robot pretty well

    http://www.ebay.co.uk/itm/DC-Hybrid-...item3cd5d00b41

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  4. #4
    When you say platform are you meaning literally a platform to move props etc on stage or similar or for a combat robot?

    The weight categories that are big atm are the 30lb and 220lbs weight classes.

    You also mention nothing of speed. A wheel chair motor will move all of the above but not at high speed whereas yes an etec or ampflow would move a machine quickly but you will need a decent custom gearing system with each.

    Are you US, UK or otherwise based?

  5. #5
    Gary, good Questions actualy.

    I guess Hiphopbots is UK based. As he specifies a £1500 budget. That's a very large budget compared to most. And could include everything, like batteries and speedo, even TX/RX.

    Hiphopbots. The questions Gary asks are relevant.
    A drive that makes a 20lbs machine a dragster can power a 220lbs machine at a snails pace.
    So, what is the purpose? If it concerns robot for combat- the main thing on this site- your choises in weight are strange.
    20 lbs fits in between the 6 kg raptor class and the 13.6kg featherweights.
    50 lbs is close to the lightweights of 25 kg, and I don't know of any being ready for the task, so you'll end up with a unique machine in the UK or Europe.
    100 lbs is close to the middleweights, and that's also a class not much in use. The only one I know of is Steel sandwich, and that fights 100 kg heavies.

    In short. 150 grams is the lightest class in common use, the Antweights.
    Beetles of 1.36/1.5 kg are up and comming.
    the 6kg Raptors are a German class and is popular on the "main continent".
    The feathers of 30lbs/13.6Kg is the most common class atm, and popular everywere.
    25 and 50 kg machines, you'll have to look at the US or Brazil for any opposition.
    220lbs/100kg Heavyweights are still the "king of the hill" machines.

    If it's for a "drive platform" for other purposes, then we should know what the purpose is.
    But for most "common" purposes a drive that can reach walking speeds is more than adequate, and power is mandated by the terrain you want to cross.
    Last edited by maddox10; 15th September 2013 at 13:23.

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  7. #7
    For a robotic "carry-all" that can carry 500km at walking speed, you'll need some serious power, especialy if the terrain ain't a factoriesmooth floor.
    Use a roboteq for the added control and sensor inputs these allow.

    You'll need serious grunt, and a lot of heatsink capacity, so we won't muck around with small high power but easely overheating motors.
    http://www.robotmarketplace.com/prod...A40-300 motors.
    Or else the more easely available ISKRA AME series permanent magnet motors (Hydraulic shops will have acces to these)
    Batteries can vary between large SLA's and normal grade LiPo.

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    To be honest for moving such a large load it may be better to just look at hydraulic motors rather than an electric system.

    I think you need to properly set the boundaries of the project. 20lbs versus 500kg is a BIG jump and you can't use the same motors in either. For a 500kg mover your motors will be 20lbs plus in weight!!

  10. #10

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