prop pitch and dia
 

In a regular inboard.Say with a 14x13 3 blade prop.How many rpm can be gained or loss per inch of pitch and how many rpm can be gained or loss for inch od dia. What is a cup in the blade good for rpm wise.All this is just for a general rule.JOHN SR

1 inch of pitch is aprox. 200 rpm.
1/2" of diameter can be 100-150 rpm but the propeller geometry comes into play.
Cupping is a tough one since the radius, height and location determine the outcome.
If you would like some concise information on these items, call us anytime.

Brett