Ronald Sutton
Member
The formula for fixed pitch propellers is
propeller pitch in inches X RPM X 60 minutes
12 inches X Ft. per mile 5280 feet
RV4 180 Lycoming aluminum sensenich prop model 72 FM 85 9-1-85
85 X 2750 X 60 = 14025000
12 X 5280 = 63360 = 221.354 miles per hour
85 X 650 X 60 = 3315000
!2 X 5280 = 63360 = 52.32 miles per hour
Ever wonder why you float so far down the runway?: your stall speed and landing speed that your prop is pulling you are the same.
propeller pitch in inches X RPM X 60 minutes
12 inches X Ft. per mile 5280 feet
RV4 180 Lycoming aluminum sensenich prop model 72 FM 85 9-1-85
85 X 2750 X 60 = 14025000
12 X 5280 = 63360 = 221.354 miles per hour
85 X 650 X 60 = 3315000
!2 X 5280 = 63360 = 52.32 miles per hour
Ever wonder why you float so far down the runway?: your stall speed and landing speed that your prop is pulling you are the same.
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