I have a K-140 in my Skymaster F-15. The engine has 61 runs on it with 630 minutes on the timer. Out of the runs on it I believe 3 of them were test starts. As for the fuel consumption, I have 124 oz's of fuel on board without the 4 oz UAT tank. I consider this unusable fuel. The 2 main tanks at a total of 84 oz's and 39 oz tank up in the front between the intakes. I run a 7 minute timer and when I land the 2 main tanks are empty and front tank has about 3/4 of it left. On the F-15 I do balance it with the front tank 3/4 of the way full because this tank is so far forward of the C/G. If I do run this tank low the C/G changes a little so I just go to a lower rate on my elevator.
I have never had a flame out on the engine. I have not had any problems with the engine. It starts clean and runs great. The power is great as well. This F-15 is on the heavy side at 30 pounds empty. With fuel and the center line smoke tank full I am upwards of about 35 to 37 pounds.
Here is some video of the F-15 flying watch the whole thing and you will see how well it holds the nose for landing.
http://www.youtube.com/watch?v=iEKASGZTPsE
RCU won't Upload pics right now so I will Try again later
Joe Lewis
Kingtech
K-80 and K-140
Owner