"Roger Halstead" wrote in message
...
On Tue, 25 May 2004 15:27:33 +0100, "Paul Sengupta"
wrote:

"Gerald Sylvester" wrote in message
ink.net...
Did you know you can buy true turbo jets for model aircraft? They
cost
about $3000 and give about 20 lb thrust, They are around 4" in
diameter.

I think you'll find they cost a *lot* more than that.

AMT's prices (excluding tax) start from 2972.00 Euros.
http://www.amt.nl/form_pricelist.php

Or build your own... :-)
http://www.artesjet.com/components.htm

As for fuel consumption, the above site gives a thrust of 92.3N. It gives
fuel
consumption of 0.154kg/N/H. So that's 14kg per hour. About 20 litres? What
is the specific gravity of propane? One of the pages for the Cobra engine on
the
Cri-cri says 0.8kg/N/H.

Paul