Paul,

Do you think the extra power would make up for the drag if you just leave
the cowling off?  Nah, probably a bad idea. :)

Bob White

On Wed, 16 Feb 2005 17:26:58 -0600
"Paul" <sqpilot@bellsouth.net> wrote:

I hit 5600 static rpm's. In the past, the best I could
hope for was 5200, most of the time settling for 5100 rpm's.  I
taxiied back in and installed the top cowling....max rpm's 5100.  Took
the top cowling back off....max rpm's 5600.  One more try....5100 with
the cowling back on.  It is beginning to become more clear to me, that
one of two things are affecting rpm's.  Option one is that with the
top cowling on the engine is ingesting heated air and just cannot
develop the same power as when it ingests outside unheated air.
Option two is the muffler bearing may be worn.  I'm kinda leaning
toward option one.

     to all who reply.  Paul Conner

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