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ARSG Performance Testing - Day 1



Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>

Well, day one of the performance testing is complete.  Test started at
8:00am and was just shut off around 10:30am.

Test Details:

Test speed:  480 BPS or 3600 RPM  (determined visually by using a 60 Hz
modified strobe light - Terry Fritz design - and counting multiples of
lock-ups)
Temperature:  68-70 degF
Total duration today:  14.5 hours

Before test, I measured using calipers the exact lengths of tungsten rod on
either side of polyethylene rotor.  I also measured distance between top of
phenolic plate and top of
polyethylene rotor to see if any measurable movement was detected on the
motor shaft.  This distance was measured after making sure the motor shaft
itself was pressed up as high
as possible as the shaft does have a little bit of play in it internal to
the motor.

After test, I repeated all measurements.  So far, no variation has been
detected other than maybe a thousandth or two due to measurement error.  So
far, so good.  And, believe me,
at 3600 RPM, this thing is moving pretty good.

Of course this test is being conducted under no electrical load.  It would
be interesting to see this test under electrical load where the tungsten
spinning electrode would get very hot.
However, I'm not at the point where I'm going to run power to this thing
unattended.

Dan