The Black Mountains Gliding Club, Wales, UK have been
operating a 235 pawnee with a hoffman 4 blade prop
and gozzmogoli muffler for at least 15 years that i
know of. I seem to remember someone saying it lost
a few HP, but it will regularly haul a k21, Duo discus,
open Jantar, Nimbus 2 off a 350 yard downhill sloping
grass field as long as the ground is not to wet

The field is 900ft amsl

www.blackmountainsgliding.co.uk/ email the club, they
should be able to put you in touch with someone with
some more information, I dont do things with engines

Pete

At 17:48 24 January 2008,
wrote:
My club is about to acquire a 250 HP Pawnee with no
muffler and a 7 ft
climb pitch prop. We are anticipating some noise issues.
I have seen
Pawnees in the UK with mufflers and four bladed (Hoffmann?)
props and
which were eerily quiet.

Anyone know what these mods cost, in performance and
money?

Richard Kellerman