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What do you say to these linear acutaror?

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by berty, Dec 26, 2014.

  1. berty

    berty Member

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    Hi everyone, I was wondering if anyone has experiences with these linear actuator, and if I could use them for my 2DOF.
    http://wxhongba.en.made-in-china.co...-Speed-Electrical-Actuator-for-Simulator.html
    berty, Dec 26, 2014
    #1
  2. dave w

    dave w Member

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    from my limited understanding of linear actuators, I think the 5-100mm/s is too slow
    • Agree Agree x 2
    dave w, Dec 26, 2014
    #2
  3. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    100mm/s would be interesting but hardly the duty cycle:
    What is the Duty Cycle and how it may affect the life?
    The duty cycle is =working time/working time + resting time
    For example: With a 25% Duty cycle: Taking 1 minute of a complete cycle: Duty cycle =15 sec working/15 sec working+45 sec resting Duty Cycle = 25%. Actuator working time is function of load. Whole welact actuators get at least 25% duty cycle at full load.Major temperatures may affect this rate.
    • Agree Agree x 1
    Pit, Dec 26, 2014
    #3
  4. bsft

    bsft

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    I sent them an email asking if they would do a video of them in action
    bsft, Dec 26, 2014
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  5. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    @bsft nice idea, but IMO the duty cycle is a no go. 25% cycle means 15 sec working and 45 sec rest. There is no chance to get them successfully working within a simulation rig.
    Pit, Dec 26, 2014
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  6. berty

    berty Member

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    And what should be optimal duty cycle?
    berty, Dec 29, 2014
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  7. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    as higher as better, IMO even 50% is not enough. 80% would be optimal, but remember these duty cycles are under full load. Most actuators are running at the limit and they are moving all the time, thus they will be overheated and sooner or later fail. I am not the super specialist about actuators, perhaps someone of our "actuators" can report their experiences.
    Pit, Dec 29, 2014
    #7
  8. eaorobbie

    eaorobbie Well-Known Member SimTools Developer Gold Contributor

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    100% , I would be searching for some 2nd , salvage units that have a nice strong body and internals then I would mod a DC motor that's going to handle the duty cycle we want to thrash them at.
    Apart from SCN5/6 I have not yet discovered a unit that compares. Well not off the shelf for the same cost.
    eaorobbie, Dec 29, 2014
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  9. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    @eaorobbie do you know the duty cycle of the SNC5/6?
    Pit, Dec 29, 2014
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  10. eaorobbie

    eaorobbie Well-Known Member SimTools Developer Gold Contributor

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    Not sure , I don't have any spec on their duty cycle but they use a Nema Stepper in the construction of the unit. So it should be pretty high.
    eaorobbie, Dec 29, 2014
    #10