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[Motorman]

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[Dave_Trible]

I don't think there is any way to directly convert as you are wishing.  There are quite a few aspects of a prop that affect its performance;  blade shape and width, thickness, helical pitch, flat or under cambered, tips square or round,  what engine...... Given what little you really have to start with I guess I would start with 10" diameter since I'm adding a blade then use about the same design and pitch you have now.  It will still be a completely different prop but in carbon you will heat and re-pitch the blades anyway if its not on the money.  Make a number of them so you can modify the tips, etc., to experiment.

Dave

[Howard Rush]

You can get a clue from Javafoil,  http://www.mh-aerotools.de/airfoils/javaprop.htm , or from this paper: http://arc.aiaa.org/doi/abs/10.2514/6.1983-190 .  What powerplant do you have that works at less than 9570 RPM?

[Howard Rush]

Merely plugging numbers into a program that somebody else already wrote "drags down" an iterative process of making molds for three-bladed unpitchable propellers for a unique RPM range?

[Randy Cuberly]

Power is E flight power 15, thanks for the links but all that heady engineering stuff just drags down my process. I wanted to get pretty close on pitch because you can't re-pitch the props I make after they cure for some reason, not going to copy APC anyway. Did Tornado make a 10x6 and a 10x4?

Oh Holy Cow!  Why not just use and old fox 35 and a 10-6 Top Flite prop and forget about all this "heady engineering stuff"...if you want 1958 technology why not just use it! 
 

Randy Cubery

[Trostle]

Did Tornado make a 10x6 and a 10x4?

Yes, and they produced a 9-6, all three blade props.  I have seen some carbon copies of the 10-6, but do not know who did them.

Keith

[wwwarbird]

I have seen some carbon copies of the 10-6, but do not know who did them.

Keith

 That would be Steve Wilk, Eliminator Props, here in the Vendor section.