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Related

Servo trouble

royston02
royston02 over 11 years ago

I wanted to know if a servo left without power in stationery mode (without making me want to turn it) lift the weight?

Eg:- A skateboard. I just want to stand on itwithout it moving. the skateboard is the servo. Will the skateboard i.e servo stand or fall? No battery. 

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  • dougw
    dougw over 11 years ago +2
    If you can live with a normal DC motor and use it with a worm gear, it should "lock" when not powered.
  • mcb1
    mcb1 over 11 years ago in reply to royston02 +1
    Try this .. Open your browse and enter this in a google search "how does a servo work" the first two results give a good breakdown of how it works. Mark
  • Robert Peter Oakes
    Robert Peter Oakes over 11 years ago +1
    Note there are many different systems that fall under the name of SERVO. The one you linked in may be geared but not like the one shown above. A typical Remote control plane/Car/Boat servo is based on…
Parents
  • Robert Peter Oakes
    0 Robert Peter Oakes over 11 years ago

    I think you need to post a picture showing how you plan to do this, You talk about standing on the board with a servo holding it but the servo you linked is capable of moving maybe 40KG, not an adult or medium child and also it wont move it far

     

    the servo powered will indeed lift / move that eweight but if you de-power it i would not expect it to be able to retain the weight if gravity is acting on the load (Scate board)

     

    to a picture will definitely help here

     

    Thanks

     

    Peter

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  • Robert Peter Oakes
    0 Robert Peter Oakes over 11 years ago

    I think you need to post a picture showing how you plan to do this, You talk about standing on the board with a servo holding it but the servo you linked is capable of moving maybe 40KG, not an adult or medium child and also it wont move it far

     

    the servo powered will indeed lift / move that eweight but if you de-power it i would not expect it to be able to retain the weight if gravity is acting on the load (Scate board)

     

    to a picture will definitely help here

     

    Thanks

     

    Peter

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  • royston02
    0 royston02 over 11 years ago in reply to Robert Peter Oakes

    I don't want a skateboard and servo. Don't misunderstand. The skate board was an example. I just want to say how can I get the toque out of the servo without being powered. Just hold the object. Just hold a kinect without putting force on the holder.

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  • dragonstyne
    0 dragonstyne over 11 years ago in reply to royston02

    image

    If you can spin the servo without power it will not hold anything reliably. If the servo has a gear mechanism like illustrated above, it will hold. If not you can add one.

     

    The servo drives the top gear and the load is connected to a shaft driven by the lower gear.

    You should not need a brake as Douglas was referring to.

     

    However, if a brake is required, solenoid control of a rubber pad against the lower gear will prohibit movement.

     

    -Steve

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