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Finished my streamlined strut covers yesterday. Didn't really see much top end performance increase, maybe 1 MPH. Slow speed handling is much happier though. Stall speed is down and the plane happily climbs at 30 MPH now where before it got a little mushy at about 40 before.
I have the 80 HP Rotax 912 UL, 70 inch Warp Drive 3 blade with nickle leading edges set to about 8 deg. This combination gives me 78 MPH cruising at 5200, 5400 RPM on full power climbout and a top end 5800 RPM straight and level.
Any suggestions (besides removing the slats)?