I recall an old thread that discussed cruise performance of cubs - speed penalties for different mods etc.
I regularly fly with a friend with a bone stock cub, 1500+ hr 150 hp, only mods are a 82/42 borer and 29"s.
if were both cruising at 2450 (both using digital tachs) hes got about 8 mph on me.
Im flying a recently rebuilt cub, rigged to spec, 70 lbs lighter, 160 hp (port/polish lycon), 82/43, 3" ex gear (uncovered), bags over my hydrosorbs, 31", bby bushwheel. 2450 im about 87mph 1500 msl 70*.
I would have figured turning a 43 pitch prop at the same rpm (and burning alot more fuel) would even things out. Guess not.
Anyone have data on common mods and associated speed penalty?
I regularly fly with a friend with a bone stock cub, 1500+ hr 150 hp, only mods are a 82/42 borer and 29"s.
if were both cruising at 2450 (both using digital tachs) hes got about 8 mph on me.
Im flying a recently rebuilt cub, rigged to spec, 70 lbs lighter, 160 hp (port/polish lycon), 82/43, 3" ex gear (uncovered), bags over my hydrosorbs, 31", bby bushwheel. 2450 im about 87mph 1500 msl 70*.
I would have figured turning a 43 pitch prop at the same rpm (and burning alot more fuel) would even things out. Guess not.
Anyone have data on common mods and associated speed penalty?