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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
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