Prop and speed calculator
 

Can someone post the calculator for prop, rpm, and gear ratio calculations.
Thanks

Re: Prop and speed calculator
 

http://www.go-fast.com/bam_marine_knowledge_base.htm

This what you are looking for, or the formula?

Re: Prop and speed calculator
 

The formula

Re: Prop and speed calculator
 

(Pitch x RPM) / (Reduction x 1056) = MPH.




Doug

Re: Prop and speed calculator
 

I'll bet you can calculate the #s is your sleep by now :drink:

Re: Prop and speed calculator
 

Thanks, I used to have it and lost it.

Re: Prop and speed calculator
 

Merc. has had a "slide rule" calculator available that lets you check everything quick and easy. The Merc. part # is: C-90-86147, and includes some real good, basic, "don't kid yourself" instruction. Hope that # is still available cause it eliminates just so much B.S.! --- Jer

Re: Prop and speed calculator
 

This site is pretty cool.
http://www.rbbi.com/folders/prop/propcalc.htm

Re: Prop and speed calculator
 

Nice site. Thanks

Re: Prop and speed calculator
 

doesent work for above 100mph