Source for gears, bearings, axles etc?

Discussion in 'Electronics Resources' started by spinnaker, Jan 18, 2013.

  1. spinnaker

    Thread Starter AAC Fanatic!

    Oct 29, 2009
    I have an idea for a clock based on a propeller clock. My idea would use persistence of vision like the propeller clock except the LEDs would be mounted on a cylinder.

    The cylinder would be mounted horizontally and be spun by a motor.

    I figured I could use PVC tubing for the cylinder. I wanted ideas on where I would get the rest of the works. I figured I would need an axle with bearings and either some kind of belt or gear drive. Any ideas where I would get this stuff?
  2. TinkersALot

    New Member

    Jan 8, 2013
    I have been looking very closely at VEX parts again. I like their parts, but their prices do scare me a bit; though other compadres ensure me that the prices aren't that bad. I'd like to know about alternatives to them as well.
  3. Pencil

    Senior Member

    Dec 8, 2009
    Try this.


    Personally and professionally have never had any problems.
  4. spinnaker

    Thread Starter AAC Fanatic!

    Oct 29, 2009
    Thanks. Tons of parts out there. Any idea what I would select for a project like this?

    This is way a walk in store is so great for something like this. You can put you hands on the stuff and see if it would work out.
  5. Metalmann

    Active Member

    Dec 8, 2012
  6. Kermit2

    AAC Fanatic!

    Feb 5, 2010
  7. shortbus

    AAC Fanatic!

    Sep 30, 2009
    Metalmann likes this.
  8. Markd77

    Senior Member

    Sep 7, 2009
    I'm not sure you need gears. I imagine it will be pretty lightweight and so easy enough to spin with pretty much any motor. 10000 RPM is only 167 Hz which is pretty good for persistence of vision. Anything under 100Hz starts to look flickery.
  9. mhutchie1

    New Member

    Jan 21, 2013
    As a word of warning after doing several rotational persistence of vision displays myself, it is best to have NO gears and opt for a brush-less motor, (purely electromagnetic is preferred). If you use gears, or have a system based on a cheap motor bearing, once the motor is spinning at speed, you will have deviation in the path of the LED's, resulting in an undesirable effect, and decreasing the resolution of your project.

    I have seen many of these projects on Youtube done with 12V PC fans, however it is best to select a motor in conjunction with well oiled bearings to do the job.