Prop diameter???

I have been looking and reading all I can about prop sizing, and all the formulas that I can find on prop selection refers to pitch, I understand what pitch is and how it works etc., but I haven't been able to find anything about prop diameter. How do I dertimine what diam. and pitch prop I need? Any help would be appreciated...Thanks...Ken

[boats.net]

You don't have a choice of diameter. The diameter will be different between alum and SS props, different styles of props in the same pitch may have different diameter. You would have the option of different diameters in the same pitch size on the same style prop.
Just select which style prop you want(that will work on your model motor) then select which pitch size you want.

Hey thanks for the explanation, it clears things up a bit !

[Freddy]

Not necessarily with the option of diameter. You can increase/decrease the diameter of the prop when selecting a prop. Fine tuning your boat for the best overall performing prop can result in different pitch and diameter.