Rotary gap motors

• To: mark.graalman-at-mediccom.norden1-dot-com
• Subject: Rotary gap motors
• From: Esondrmn-at-aol-dot-com
• Date: Thu, 4 May 1995 12:00:28 -0400
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• Cc: tesla-at-grendel.objinc-dot-com

cc:tesla-at-grendel.objinc-dot-com

Mark,

I received the motor for my rotary gap yesterday.  It is rated at 10,000 rpm
at 115 v ac or dc.  I tested it with my variac and tried to measure the speed
using a tachometer that I built from a kit for measuring the speed of
airplane props.  It seems to be running at 15,000 rpm with no load.  Does
that sound reasonable?  I know I need to control it to keep it the rpm
somewhere between 4000 and 5000.

When I get the gap finished, I want to build a wooden box to sit over the top
of it.  I was planning to mount a fan on one end and drill a 2 or 3" vent
hole in the other end - to provide some cooling.  Is a 100cfm fan large
enough?

Thanks,  Ed Sonderman

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