I am flying a AMD Zodiac 601XLB powered by a Continental 0-200, Sensinich wood prop 68 inch diameter, 57 inch pitch.
Plane has 400 hours TT, I bought it about 6 month ago and I believe I was seeing higher max rpms, 2700, and higher max speed, about 128 MPH, engine spec is 2750 redline.
What I am seeing now is 2500 max rpm leaned out, at 7000 feet, and 118 mph
Static is 2300, take off 2340.
I have checked the throttle throw, carb heat, replaced the plugs, checked the timing, cleaned the fuel screen, air filter.
Next check will be a compression check.
I don't think the prop could have warped, the plane is tied down outside, but the prop has a cover. may have to find a way to check the prop specs.
The plane flies fine, no vibrations, fuel flow looks normal and cht and egt are all normal on the dynon D180, fuel is 100 LL
anyone experience something similar that could suggest a solution? It seems that something has changed, prior owner reports better numbers.
Dave