Prop Formula??

[Fasprop]

What is the formula for finding slip and speed??

[LHC30Victory]

try these:
http://www.rbbi.com/folders/prop/propcalc.htm
http://www.go-fast.com/prop_slip.htm
Hope they help. If not go to OffshoreOnly.com and search the tech forums. Look for Houston Propeller (and others).

[STV_Keith]

This is the one I use: http://www.byuboyz.com/boats/prop.htm

[Fasprop]

Thanks to both of you. :squiggle: Not very good numbers...