Well, I test ran the JJ1400 again to make sure that I could accelerate to full power quickly without the engine acting up...and I am very disappointed to report that the engine is still up to its old tricks of blowing flames again...... I am absolutely positive 100% I put the engine back together correctly. My acceleration delay was at 70. I took it up to 100, and it still blows flames on spool up.
It idles very nicely, and if I slowly accelerate to full power everything is fine, but when I slam the stick forward, it shoots flames and eventually flames out.

I just don't know what to do! I have tried everything short of kicking it in the tail pipe! I just spent 223.00 for a dynamic balance and new bearings. I bought the new inconel CC. I used the outer race of one of my bad bearings as a spacer to make the preload push harder. I made sure that the rear oring wasn't sticking to the preload. I made a new lubrication line from the old CC gas line, so the bearings are getting plenty of lubrication. I have sealed everything up....... What more could it ask for? My bad luck I guess. I just want to go flying!

Some thing that would help me a lot would be if you could give me a detailed explanation as to how the preload system works. I have been told that this is my problem, but if I can't get an explanation as to what it is doing while the engine is running, then I have a hard time being sure that it is in working order. From the looks of it, it is a spring with a sleeve that applies pressure to the outside race of the rear bearing. I understand that by applying pressure to the outer race it is in fact applying pressure to the whole rotor assembly. Because of this, when the engine is fully assembled I am able to reach through the tail cone and push on the turbine wheel and feel the rotor assembly slide forward and spring back. I placed a spacer inside the tunnel so that the preload had more "pushing power." Is it possible to have too much "pushing power"?


Let me know if you have any suggestions for fixing it or what I should do,......... could it be a software problem in the ECU??
Brandon Vazquez