Posted for "John Barrett" <2thman@olympus.net>:

My questions (to add to the others posted) follow:

What prop speed are you running with this engine to produce 350 HP?  What about 500 HP?  It would seem that the prop tips would be going pretty darn fast if you're running the engine direct drive at much more than 2500 RPM - even that might be pushing it with prop blades that long.  What HP will you get at that RPM?  What are the braided hoses going into the nose cone device, and what is that device?  is it a prop governor? If so, why is it so large?

Regards,
John Barrett