Let me ask the muffler question. I am curious as to what level of Hp
reduction occurs using a good muffler system - one you might find for
instance on a Mercedes that would pride itself in minimum noise.

I ask as we are going to be using large diameter slower turning props. I
would expect the normal engine noise to be much greater than prop tip noise.
A much reduced noise signature is of interest to us.

Cheers,
Brian
___________

Brian Feeney
DreamSpace Group


We don't know Brian. No back pressure data and no dyno data.
So far prop noise is at least half of the noise and in some case
more than half.

Paul Lamar