I have a PT Profile which was originally fitted with a MDS.18 engine. It flew, but it seemed to lack enough power to fly well or gain altitude. The recommended engine for this gyro is a .15. Iswitched it over to electric, put on a EFlite 15. Again, it flew, but it was not impressive. Also, recently purchased a completed PT.09. It has a AP.09. With a 7x4 prop Iwas unable to make this little gyro fly. It just does not seem to have enough "oomph". Anyone out there know if my problem is engine (motor) or set-up? Iam looking for any suggestions anyone can offer and while Iam at it, recommendations for best prop sizes for both these gyros would be appreciated. Hope to see many of you at Muncie next month!

Chuck
...somewhere in Indiana...