I am new to the "RV club", as well as the experimental aircraft world, however, i have been enjoying every minute in the RV7. My plane has an O-320 and the recommended Hartzell C/S prop.
I have one nagging concern with the engine/prop combination; that being that the engine has 9:1 pistons in it. As most of my flying was either behind Lycomings with fixed props or Continentals with six cylinders, I was not aware that some certified aircraft with 4 cyl Lyc and C/S props had operating limits in the 2100-2350rpm range, and as such caused me to research in much greater detail the specifics of my setup.
Sorry for the long post but my question is this...has anyone out there run a similar combination? If so, how long and what have you found?
Both ECi and Hartzell tell me this is not a certified installation. And that torsional stresses are mostly related to CR and not displacement.
Thanks, Darin
I have one nagging concern with the engine/prop combination; that being that the engine has 9:1 pistons in it. As most of my flying was either behind Lycomings with fixed props or Continentals with six cylinders, I was not aware that some certified aircraft with 4 cyl Lyc and C/S props had operating limits in the 2100-2350rpm range, and as such caused me to research in much greater detail the specifics of my setup.
Sorry for the long post but my question is this...has anyone out there run a similar combination? If so, how long and what have you found?
Both ECi and Hartzell tell me this is not a certified installation. And that torsional stresses are mostly related to CR and not displacement.
Thanks, Darin