On Thu, 15 Apr 2004 09:51:05 -0700, Richard Riley
wrote:

:On 15 Apr 2004 08:39:35 -0700, (Bruce
:Meacham) wrote:
:
::I remember seeing somewhere in some rag (SA, AOPA pilot maybe
::Kitplanes) a new variable pitch propellor system that used ram air
:ushing against the tip of the spinner to govern the blade pitch. It
::had not propellor control, no hollow crank, no rpm governer, no
::connections at all. Just when you go faster, the blades bite more
::air.
::
::I've done an extensive web search and all I can find is the Aeromatic,
::which is a 30yo propellor nolonger in active production.
::
:oes anyone know what I'm talking about?
:
:A few years ago I saw a prop being imported from the eastern block
Poland, I think?) that had a spinner with spiral vanes on it. The
:spinner was free to rotate from the rest of the assembly, and it's
:relative rotation is what controlled the pitch. It was being imported
:by a significant US company, but I have no memory of which one.

I remember now - Avia, from the Czech Republic. It was being imported
by Hamilton Standard, now it's majority owned by MT. I don't know if
it's the one you're thinking of, but it's in the ballpark.