wrote:

The most dependable, at the moment, are these

http://www.amtjets.com/

The top model gives 51,7 pounds of thrust.
I've seen many of them "At work" on RC models. Amazing.

Piero

They spec 10.5 gal/hour for 52 lb thrust (51.7 actually). Which is close to
what the other 30 /b unit spec'ed
John