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In the early 90's I was using Autocad R9 and Corel to draw machines for reports in the optical alignment biz. I saw an ad for a "Graphics Person" and it turned out to be for running one of the first...

http://www.lambert-modellturbinen.de/ claims to have the smallest.

That Cf100 is huge! Did you finish it yet? A 2 car garage is being held up til, (and maybe after) you finish it! (Nah, we didn't copy the 262 in any way!) ;)

Beaker, excuse my ignorance, but the picture you posted of the pulse jets appear to have two exhausts and no exhaust?
In Jr. High School someone demonstrated a pulse jet. He told us to be very quiet...