Hi Mark, Chris and the rest - Happy Thanksgiving - except for scrooge Chris of course {:>)
Mark, been thinking about your exhaust conundrum - clearly the least exhaust back pressure is best for performance out of your PP - however, as you have indicated the Wail of an unmuffered 20B PP port might force you to get towed to
10,000 MSL before turning on the engine to comply with noise abatement rules. Not a very viable solution.
Got me to thinking about a similar problem back in the Hot rod days. The solution was the "cut-out" - simply a valve in the exhaust system that diverted the exhaust through the muffler when the sound police were in near vicinity - and
then when all was safe (like Chris not being around {:>)), the valve was switched to divert the exhaust down a straight pipe.
I'm wonder whether that might not be a viable solution to having your cake and eating it also? For most of us running stock or mild street ports - its probably not worth the effort, but in you case it might be.
Here is a URL to cut-outs both mechanically and electrically activated
Ed
Sent: Wednesday, November 24, 2010 11:51 AM
Subject: [FlyRotary] Re: Friends and Family....
Chris,
Well, you can always go out to the airport and polish your turbo while you wait for your EC-2 to arrive. ;-)
If weather permits (and I get caught up on the "honey-do's") I may venture down your way this weekend. But before I fly again, I've got to get the EGT's hooked up after changing exhaust system. No need for me to call, you'll be able to hear me doing
my runup at 50R. That will give you about a 45 minute warning. Are you planning to be at the airport Saturday or Sunday?
Seriously, I'll call you in advance. How do I find your hangar once on the ground? From the YouTube videos, it appears that you've got more hangers at Ellington than Col. Sanders has chicken coops. I'll need a road map to find your hangar.
Mark
On Wed, Nov 24, 2010 at 10:29 AM, Chris Barber
<cbarber@texasattorney.net> wrote:
FINE, I guess it is obvious that a holiday that focuses on friends and family is more important than tending to your aviation project and posting your progress
, discoveries and insight here. NO PROBLEM. We see where your loyalties
lie and
it is certainly NOT helping satisfy my 'fix" of rotary knowledge, otherwise the silence would not be as deafening
as an un-muffled
20b
at full song.
Go ahead, eat your turkey, watch the Cowboys get beat, fall asleep with that evening cocktail dangling from your hand. I can wait....... I will be thinking of you all as I "serve and protect" while other officers, as well as all of you, enjoy the day
with their families. I will be checking the list with disappointment
as no new emails get posted. Heavy sigh.
Oh, and Happy Thanksgiving. ;-)
Chris Barber
Houston