Hi Paul and Richard Sohn,
 congrats on the wonderful development of the composite endplates, I'm
definitely a starter for my single rotor engine. I've been searching for
a planetary set with a ratio of about 2.5:1 for the prop redrive, no
luck so far. I notice you mention the Hirth redrive, what ratio is it?
What rpm do you plan on running the single rotor at? I've planned around
the magical 6000 rpm that Paul's chart shows as the minimum bearing load
speed, so the 2.85 ratio of the C6 gives a prop speed a little low.
Maybe I'm a little premature with these questions, but the ratio thing
has been bugging me for weeks. Great job on the endplates, Thanks, Dave McCandless.

Richard is off the list for a week or two Dave.
As I recalled he mentioned 7000 RPM.

Paul Lamar

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