PA18-180 4 blade Prop

Originally Posted by Andy[_1_]

On Jul 15, 1:33*pm, Bastoune wrote:
Check with Mile High Gliding in Boulder Colorado. They have a pawnee with a 4 blad prop. I visited them a few weeks ago and I was amazed how quiet their tow plane is. You can hear the engine but it seems that there is no noise coming out of the prop.

After being exposed to US Pawnees for years I was amazed at how quiet
the Pawnee was at Challock (Kent U.K) when I visited a couple of
years ago. The combination of a 4 blade prop and a good muffler made
the tug inaudible from the launch point before it was halfway through
the takeoff roll. Of course that could mean the takeoff roll was
really long but I don't remember that it was.

Andy

I think prop noise is worst sideways on. It doesn't sound too bad when you are behind the tug at the launchpoint, but if you are partway down the field when ours goes past there is a really annoying rasp. One of our planning prescribed towout routes makes a quarter circle around an isolated (expensive) house. Not surprisingly the owner has made vociferous complaints.

Mike