Prop Slip Formula
#2
#3
Registered
#4
Charter Member #601
Charter Member
Take your prop pitch X rpm and divide by 1584 = 100% efficiency. If you figure you have 10% slip, mutiply the total by .9 and that will get you close..
play with the numbers and you can figure it out.. Or go to the sites.. This is for a 1.5:1 drive ratio.
For a 1.36 drive, divide by 1436.16....
For a 1.25 drive, divide by 1320...
Hope this helps.
Dick
play with the numbers and you can figure it out.. Or go to the sites.. This is for a 1.5:1 drive ratio.
For a 1.36 drive, divide by 1436.16....
For a 1.25 drive, divide by 1320...
Hope this helps.
Dick
#5
Registered
Using the equations you get 'calculated mph' assuming no slip. To find % slip use:
[(calculated mph - actual mph)/calculated mph] X 100 = percent slip
Where 'actual mph' is gps verified.
[(calculated mph - actual mph)/calculated mph] X 100 = percent slip
Where 'actual mph' is gps verified.