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Question Motor Output of 64 RPM ?

Discussion in 'Electronic and hardware generally' started by Deane, Sep 2, 2018.

  1. Deane

    Deane Old Fart

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    I need a quick yes/no answer relating to the gear motors I am looking at getting from Motion Dynamics here in Oz.
    The only combination that I can get at the moment that is in stock is
    200W- 12V- 64 rpm -23A - 30Nm- 3,200 motor speed - 50:1 ratio Gearbox

    Is the output RPM of 64rpm too low ??
    I know they will have heaps of torque and the 50:1 ratio is good
    They are option 11 in the list attached for reference

    I want to order them asap.
    200w-wormdrive-selection.jpg
    Deane, Sep 2, 2018
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    noorbeast, Sep 2, 2018
    #2
  3. Deane

    Deane Old Fart

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    I have looked at the calculator and I was basing my design roughly on your own compact design only in 2 dof.
    I know the motors will have ample torque at 30 Nm. but I was worried it might be quick enough with output rpm's of 64.
    The figures that the calculator spits out are all jibberish to me and level of knowledge on the subject , hence I consult with someone who has done it before and better understands the tech specs than myself.
    Deane, Sep 2, 2018
    #3
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    A compact design amplifies the speed via the height of the seat back.

    The 50:1s would be fine, though once worn in can be back driven by the user weight when unpowered, hence I personally use 60:1s on my rig.
    noorbeast, Sep 2, 2018
    #4
  5. Deane

    Deane Old Fart

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    Thanks all I needed to know thanks Noorbeast as Motion Dynamics are out of stock of all the combo's I wanted and I will have to settle for two of the 5o:1 ratio 64 rpm motors in LH and I will have to swap the output shaft over on one.
    I want the motors on hand for reference when making mounting brackets and levers, plus to play with different balance points etc etc.
    Will the ouput current of 23A still be within safe limits of the JRK controllers or should I look at a higher rated controller for insurance sake.
    Thanks for the replies too.
    Deane, Sep 2, 2018
    #5
  6. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    The newer JRKs can better handle the load, a Sabertooth is the other option and is pretty much bullet proof.
    • Like Like x 1
    noorbeast, Sep 2, 2018
    #6
  7. Deane

    Deane Old Fart

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    Thanks mate I will do my homework on those options and your help is much appreciated.
    Deane, Sep 2, 2018
    #7