Re: Rotary SG Safety

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Zimtesla-at-aol-dot-com 

In a message dated 6/16/04 6:18:17 AM Pacific Standard Time, 
tesla-at-pupman-dot-com writes:


>Are you saying that a #8 acorn nut or remnants thereof were able to
>penetrate 1/4" thick Lexan?  Or did it just find a gap in the shield to
>slip through?  Lexan is VERY tough stuff, and I find it hard to imagine
>electrode remnants having enough energy following a crash to actually
>penetrate such a barrier. Photos of the breached shield would be
>interesting, as I just finished building a propeller gap with a 1/16"
>Lexan shield:  http://www.laushaus-dot-com/tesla/sync_gap.htm


Gary, the parts did break through the 1/4" Lexan. I sent some photos in, 
maybe Terry could publish them. By the way, my friend conducted a bullet 
test by firing a 22 cal pistol at a piece of the Lexan. (Controlled 
environment of course) The bullet did not fully penetrate the Lexan but 
bulged it some. More interesting is that the Lexan broke a couple inches 
away from where the bullet hit - we conjecture due to the shock wave 
travelling in the plastic.

Maybe at high spped, the rotary parts created a shock wave when they hit 
the shield?

Jim