David,
The .45-.48 ducted fan engines produce between 6 and 9 lbs. of thrust depending upon engine size (rpm) and inlet efficiency. The SimJet700 should be an excellent match for any of our kits with the exception of the F-4 and the F-15 (unless you use two of them). The original GWM FD3/67 turbine produced 8# of thrust and flew our Cougar around at 160 mph (max gross takeoff weight was 14.5# and the airplane climbed out at about 30 degrees); the A-7 lfew about 180 mph. The installed weight of the SimJet 700 should be about the same as a .45 size ducted fan set-up; fuel consumption is much less on the SimJet than it was on the GWM. We will be selling the SmiJet700 when it becomes available.
Larry Wolfe
[email protected]