Got 3 flights in today. 1st one after getting the new plane trimmed out I went with throttle up. As the speed increased I got the rare but not unheard of...FLUTTER...
backed off the throttle and just kept to tight maneuvering to continue break in.
The flutter fix on the MiG is cutting down the aileron TE so after a trim, retry.
Tank two, got airborne, went with throttle up.....
success, no flutter so off to the races. ran good, smooth and it seemed that pulling back on the throttle she just kept wanting to run, below 1/2 throttle it would slow down but this baby just wants to go. Doing high and tight loops it was smooth at the beginning of the tank but toward the end it seemed to lean out more than early on..?..
..? Finally the tight maneuvering killed it. -Dead stick-
Now I need to time the run with the 6 oz. tank.
3rd tank, Reset needle rich for high G maneuvers, set timer, going balls out (can I say that here?) this plane seems to get faster each time it flies. Again, high and tight loops, torque rolls, pylon circuits, this plane is covering ground fast. Eventually it seemed to lean again on a high G loop at 6 minutes so I lessen the G's and keep blowing holes in the sky and get 9 minutes before the tank goes dry.
After those "break in" flights I squirt in more fuel to do another RPM check. -dead plug-
(it is break-in after all) Somehow I had a plug in with an idle bar so I put in a replacement.
Running an APC 9x4, stock muffler, no baffle on 15% I hit 15,700 RPM's on the pinch. This is right in there Don with your run of 15,760 on a 10x3 but a bit shy of your run Kieth of 17,950 on an 8x5.
The test engine when we ran it had a Mouse can, MAS 9x4 on 15% and seemed to have a little better throttle control transitioning RPM's. Maybe it just likes pipes???
I also noticed just like the 15 XLS, this plane came back WET. But I guess if I wanted to keep it dry I'd be flying electrics.
Besides, It's still breaking in.
Leaning??? I guess it dosen't like bubbles.
No problem killing the engine. Idle could have been better but my replacement plug was used so I'm not counting it out yet. It wasn't a problem before.