Dan wrote:

cavelamb wrote:
John Doe wrote:
Orval Fairbairn o_r_fairbairn earth_link.net wrote:

The model airplane guys have a very small (about 15" long, 5"
dia) turbojet that they use on scale jet R/C planes. It costs
about $3000 US.

How much for maintenance and fuel?

It burns a quart of fuel in a minute or minute and a half.

Is it louder than a gas powered weedeater? Just curious.

Deafening.

100,000 RPM with every harmonic ever invented.

I think they missed the lower sub harmonics, but who can hear
over that racket?

Dan, U.S. Air Force, retired

http://www.youtube.com/watch?v=FxT5H...eature=related

Some backpack fan powered paragliding. Looks like so
much fun, but dangerous.





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Thanks to the replies.