"Decker, Michael" wrote:

Thanks to those who replied with help.  I waited to reply until the list
came back up.

The design is meant to be an air pump or vacuum pump.  The type is super
secret hush, hush, etc.  I'll post pictures once I've decided whether/if

it

can/should be patented.

The comments on power factor would mean, I assume, that if I measure the
delta of power consumption on my AC motor (loaded vs. unloaded) while
monitoring shaft RPM and intake vacuum I will get a good ball park

figure of

efficiency.  I guess a flowmeter would also help, though one can ball

park

calculate flow from vacuum and inlet diameter.

The overall purpose of this test is to compare my results with a few
different off the shelf pumps, according to their stated specs.

Let me know if that all makes sense (or none).

Mike

Mike,
It sounds good to me, I had thought of that but it was a low priority idea.
I am working on my own hush hush pump too and I was concerned we were
chasing the same objective. I hope to be testing the idea soon and then if I
can figure an effective way to manufacture the pump I'll spill the beans
then.
John

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