Posted for <dskeele@bellsouth.net>:

 Don Gorden,
    I have the exact same set up, a 3 blade mt CS on a 0-320 in the 235
airframe. I had to go electric since the mount pad (aft on the accessory
casefor a hydraulic)would have required extensive mods to the engine
mount/firewall.. I concurr with every thing you said about the 3 blade, plus
the pitch change at one deg /second keeps you from surging the engine.  I had
a  2 blade mt originally which after about 100 hrs ground up it's enternals
one night and ran towards high RPM, mt said it was a metallurgical problem on
their early models..With the 2 blade, I could never get rid of all the
vibrations at some rpms.  Without actual data tho I do believe the 3 blade is
3 to 4 knots slower in my aircraft, but the 3 blade is my long term choice.
 The newer 3 blade has low and high pitch mechanical stops and its TBO is now
six years.  I was based in Oregon up to recently and no prop shop on the West
Coast that I delt with would I send my mt back to.. I owned a T-18 Thorp
previously and had service errors with a Hartzell CS too.. Honestly, I was
told by one Prop supplier that because I was "Experimental" and that he could
and did supply undersized prop blades.. Fortunately, we found the problem
before installation..Enuf whining..but troops, be aware..  Don Skeele 320J
 Orlando, FL
Lancair 320 - N320DS (800 hours TT)
donaldgordon@bellsouth.net