Been reading on threads that people are getting mid-170kts cruise at certain configs around 8/9 thousand feet (2600rpm or so) with 180 hp and hartzell cs props.
I'm flying a (did not build this airplane) recently completed RV-7, Mattituck TMX360 185hp with a hartzell scimitar prop and the absolute best I can get out of the plane is 165 kts TAS at 7000 feet full trottle and 2400 rpm with the ram air open. Slower (>160kts) at 8500 through 9500. Higher RPM's seemed to slow the plane. The plane is rigged well. There are two blade type transponder antennals and two comm antennas on the belly. Its a sliding canopy if that makes a difference too. Should I be seeing more speed? I didn't catch the OAT at altitude when I was flying today but it was a pretty cool and dry south florida winter day.
These TAS numbers were read from the Dynon Skyview displays. Possible that these are off? I need to fly again and compare to what my GNS530 says.
*edit - all the testing was done at WOT at all three altitudes.
Nate
I'm flying a (did not build this airplane) recently completed RV-7, Mattituck TMX360 185hp with a hartzell scimitar prop and the absolute best I can get out of the plane is 165 kts TAS at 7000 feet full trottle and 2400 rpm with the ram air open. Slower (>160kts) at 8500 through 9500. Higher RPM's seemed to slow the plane. The plane is rigged well. There are two blade type transponder antennals and two comm antennas on the belly. Its a sliding canopy if that makes a difference too. Should I be seeing more speed? I didn't catch the OAT at altitude when I was flying today but it was a pretty cool and dry south florida winter day.
These TAS numbers were read from the Dynon Skyview displays. Possible that these are off? I need to fly again and compare to what my GNS530 says.
*edit - all the testing was done at WOT at all three altitudes.
Nate
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