Quote:
Originally Posted by Clark Pappas
How would I calculate a reasonable estimate of how fast our wheels are spinning?
|
Method1:
Measure the motor current (at full voltage). Then you can use the motor curves to get an estimate of speed (see Jon's post#6).
Method2:
Temporarily mount an encoder or tach and read the speed.
Method3:
Fasten a small zip-tie to the
motor wheel, then mount a small piece of card stock so the zip-tie hits it and makes a clicking sound once per rev. Record some audio of the wheel spinning then digitize it and run frequency spectrum analysis software to locate the frequency of the clicking.
Method4:
Borrow a strobe light with a strobing frequency readout. Find the fastest strobing frequency that stops the action*.
* paint a dot or put a small piece of tape on the wheel (see Jon's post#9) so you don't get fooled by stopping the action on the spokes - if it's a spoked wheel)