Posted by R Rauff on Thursday, February 14, 2008 at 15:54:15 :
In Reply to: Re: Difference between Industrial versus automotive engines posted by MoparNorm on Thursday, February 14, 2008 at 13:36:07 :
Norm sorry to say you are wrong---as i built the first air raid siren we only made one change and that was to add sodium cooled valves
I still have photos of the first unit and the first test
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