These are the specs from the Simjet web site:

Technical Specs.

Diameter: 75 mm (3 inches)
Weight: 550 g.
Fuel consumption @ 7 lb thrust: 140ml/min (4.7oz))
Max RPM: 190.000
Idle RPM: 45.000
EGT @ 7lb thrust : 600° C. (1100° F.)
Pressure abs. 2,3
Max thrust: 7 Lbf. (31N) - (3.17kg)
Min thrust: 0.5 Lbf.


On the test stand it had 1/2 lb at idle and 7.2 lb at full. We didnt run it for long but I will have it on my test bench tomorrow and run it up some more.