Thread: Funny Stuff

  1. #1
    Something that made me laugh today . Post something that made you laugh

    Click image for larger version. 

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    project 1 , 2, Dust Shoe ...

  2. #2
    Cool ! kmh..

    What occurred was trying max-speed on steppers, == 5 years ago.
    No-load, just stepper.
    Nema 23, 3 Nm, 68 V PSU I made.
    BUT a centipede very good hw controller.
    Gecko 203V drives.

    Geckos fail at around 380 kHz, as I found out.. error out.
    38 khz full steps.
    190 revs/second.
    11.400 rpm.
    Takes about 3 secs to get to full speed..
    and sounds *exactly* like a jet engine spooling up.

    I was a Mig 21Bis assistant mechanic in the Finnish Air Force, for a year.

    So it was really funny, really cool, and I did not try higher.
    The torque was so low, a finger (yes i pressed the shaft) stopped the movement.

    I recall Marisss / gecko blew up a stepper at high rpm.
    The stepper rising turbine-type noise was really funny/impressive, if useless.

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