skillet92,

I am running the 55ax without cowl- wide open. I tuned it with the thing vertical and it a bit back from absolute peak rpm. Then while flying it, I started to hear it struggle misfiring when in the air after 4-5 mins with half tank still left, so I promptly lined up for landing and it cut even before I could finish the turn to go to my lineup point.

Next time we started her and tuned her, it cut just as we placed it on the ground. Then, when we tried to start her we noticed that it was simply turning over by hand- no compression. After a couple of seconds it cooled sufficiently to regain compression. This has happened several times over the last few weeks- both the compression thing and the deadstick part. So I have given up on it. Think we had not run-in the engine properly before flying was closed down in Jan last year due to some unrelated issues.

I am thinking that with the 65ax, 75ax and 95ax using the same mounting dimensions and the 65ax being considerable lighter, I will go for the 65ax instead. However, I cant find any opinions regarding this engine on the internet of forums.

Cant use the F Plug- tried it but it keeps pre-firing at full throttle

Ameyam