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Re: Rotating spark-gap materials?
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To: tesla-at-grendel.objinc-dot-com
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Subject: Re: Rotating spark-gap materials?
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From: Scott Myers <scotty-at-wesnet-dot-com>
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Date: Fri, 01 Mar 1996 15:14:33 -0500
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Hi Chuck,
> ....I was planning on using a 13" diameter G-10 glass epoxy disk and
> ran the numbers on it. My calculation showed a stress of about 8300
> psi at 10,000 RPM. I don't know if I'll ever need that speed, but
> that is the worst case for the disk. G-10 material has a tensile
> strength of 38,000 psi so for this situation things look O.K.
I looked into G-10 myself and found some differences in my rating chart.
This is from the Special Material division of Westinghouse, tradename
Micarta. Their G-10 is rated for 50,000 psi, with the grain. However,
they don't say what the tensile strength is across the grain. Is that
what the 38,000 psi figure is?
Scott Myers