Quote Originally Posted by douglas kulick View Post
HI all:
Can i have the perfomance for anybody running a 912 ul 80 hp on a model 4 with an inflight adjustable ivo prop...
Model IV with round cowl, IVO light with IFA cut to 68in diameter. About 5600rpm on take off with nice climb and quick off the ground solo. About 400ft so not amazing but good. Pitched up for speed about 5200 RPM 105MPH. Again all I hoped for. I wanted a 100mile an hour plane and it does it nicely. Before I put the IFA on it would cruise about 90MPH. The In Flight Adjustable was definately worth it in my case. By the way my strip elevation is 3400 ft so might be off the ground quicker with lower elevation.
I am also running the large Nanco tires so I am sure I have a ton of drag from that. Still a back woods capable plane that cruises at 100MPH keeps me happy. When I fly with my buddy in his Savage Cub I get to slow down to about 90 MPH. He does have the advantage of a slower stall and landing speed.