X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from securemail.ever-tek.com ([64.129.170.194] verified) by logan.com (CommuniGate Pro SMTP 5.3.10) with ESMTP id 4591083 for flyrotary@lancaironline.net; Wed, 24 Nov 2010 14:17:43 -0500 Received-SPF: none receiver=logan.com; client-ip=64.129.170.194; envelope-from=cbarber@texasattorney.net Received: from fcd-mail06.FCDATA.PRIVATE ([2002:404:40b::404:40b]) by FCD-MAIL06.FCDATA.PRIVATE ([2002:404:40b::404:40b]) with mapi; Wed, 24 Nov 2010 13:16:49 -0600 From: Chris Barber To: Rotary motors in aircraft Subject: RE: [FlyRotary] Re: Exhaust Cut-out was [FlyRotary] Re: Friendsand Family.... Thread-Topic: [FlyRotary] Re: Exhaust Cut-out was [FlyRotary] Re: Friendsand Family.... Thread-Index: AQHLjAsui5aAljPBS0SvhHNWQmQyL5OA/95J Date: Wed, 24 Nov 2010 19:14:59 +0000 Message-ID: <2D41F9BF3B5F9842B164AF93214F3D30339AC2C2@FCD-MAIL06.FCDATA.PRIVATE> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: multipart/alternative; boundary="_000_2D41F9BF3B5F9842B164AF93214F3D30339AC2C2FCDMAIL06FCDATA_" MIME-Version: 1.0 --_000_2D41F9BF3B5F9842B164AF93214F3D30339AC2C2FCDMAIL06FCDATA_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yeah Mark, a turbo....something to polish on those lonely nights. Remember= , you can always ask a friend to help. ok, enough Chris, you are being sophomoric. DUH! ;-) ________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of = Mark Steitle [msteitle@gmail.com] Sent: Wednesday, November 24, 2010 1:09 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Exhaust Cut-out was [FlyRotary] Re: Friendsand Fam= ily.... Ed, You ought to be ashamed to even suggest such a thing! I would have thought= that an EE would come up with a more elaborate "electronic" solution, such= as a noise amplitude attenuation/cancellation/suppression system (NAACS), = sort of like a giant ANR headset that fits over the tailpipe. The whole sy= stem would consist of one IC and a big speaker. You could spend the next t= en years developing it for TSO market. http://www.thedetroitbureau.com/2010/05/bmw-diesel-shows-electronic-noise-c= ancellation/ On second thought, a cutout would be a great solution, except that it kills= power where you need it the most. I may have to add a turbo-charger just = to quiet the savage beast! Mark On Wed, Nov 24, 2010 at 12:11 PM, Ed Anderson > wrote: Hi Mark, Chris and the rest - Happy Thanksgiving - except for scrooge Chri= s of course {:>) Mark, been thinking about your exhaust conundrum - clearly the least exhaus= t back pressure is best for performance out of your PP - however, as you ha= ve 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 abat= ement rules. Not a very viable solution. Got me to thinking about a similar problem back in the Hot rod days. The s= olution was the "cut-out" - simply a valve in the exhaust system that diver= ted the exhaust through the muffler when the sound police were in near vici= nity - and then when all was safe (like Chris not being around {:>)), the v= alve 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 - it= s probably not worth the effort, but in you case it might be. Here is a URL to cut-outs both mechanically and electrically activated http://www.jegs.com/c/Exhaust-Headers-Mufflers_Exhaust-Cutouts/11529/10002/= -1 Ed From: Mark Steitle Sent: Wednesday, November 24, 2010 11:51 AM To: Rotary motors in aircraft 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 EG= T's hooked up after changing exhaust system. No need for me to call, you'l= l 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 > wrote: FINE, I guess it is obvious that a holiday that focuses on friends and fami= ly is more important than tending to your aviation project and posting your= progress, discoveries and insight here. NO PROBLEM. We see where your lo= yalties lie and it is certainly NOT helping satisfy my 'fix" of rotary know= ledge, 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 tha= t evening cocktail dangling from your hand. I can wait....... I will be t= hinking of you all as I "serve and protect" while other officers, as well a= s all of you, enjoy the day with their families. I will be checking the li= st with disappointment as no new emails get posted. Heavy sigh. Oh, and Happy Thanksgiving. ;-) Chris Barber Houston --_000_2D41F9BF3B5F9842B164AF93214F3D30339AC2C2FCDMAIL06FCDATA_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Yeah Mark, a turbo....something to polish on those lonely nights. = ; Remember, you can always ask a friend to help.
 
ok, enough Chris, you are being sophomoric.    D= UH!
 
;-)
 
 
From: Rotary motors in aircraft [flyrotary= @lancaironline.net] on behalf of Mark Steitle [msteitle@gmail.com]
Sent: Wednesday, November 24, 2010 1:09 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Exhaust Cut-out was [FlyRotary] Re: Friends= and Family....

Ed,
 
You ought to be ashamed to even suggest such a thing!  I would ha= ve thought that an EE would come up with a more elaborate "electr= onic" solution, such as a noise amplitude attenuation/cancellatio= n/suppression system (NAACS), sort of like a giant ANR headset that fits over the tailpipe.  The whole system would consist of = one IC and a big speaker.  You could spend the next ten years developi= ng it for TSO market.
 
On second thought, a cutout would be a great solution, except that it = kills power where you need it the most.  I may have to add a turbo-cha= rger just to quiet the savage beast!
 
Mark

On Wed, Nov 24, 2010 at 12:11 PM, Ed Anderson <eanderso= n@carolina.rr.com> wrote:
 Hi Mark, Chris and the rest - Happy Thanksg= iving - 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 yo= ur PP - however, as you have indicated the Wail of an unmuffered 20B PP por= t might  force you to get towed to 10,000 MSL  before turning on the engine to comply with noise abateme= nt rules.  Not a very viable solution.
 
Got me to thinking about a similar problem back i= n the Hot rod days.  The solution was the "cut-out" - simply= a valve in the exhaust system that diverted the exhaust through the muffle= r when the sound police were in near vicinity - and then when all was safe (like Chris not being around {:>)), the valve wa= s switched to divert the exhaust down a straight pipe.
 
I'm wonder whether that might not be a viable sol= ution 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 e= lectrically activated
 
http://www.jegs.= com/c/Exhaust-Headers-Mufflers_Exhaust-Cutouts/11529/10002/-1
 
 
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 n= eed 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 o= nce on the ground?  From the YouTube videos, it appears that you've go= t 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 <= span dir=3D"ltr"> <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, oth= erwise the silence would not be as deafening as an un-muff= led 20b at full song.
 
Go ahead, eat your turkey, watch the Cowboys get beat, fall asleep wit= h that evening cocktail dangling from your hand.  I can wait.......&nb= sp; 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 disappoin= tment as no new emails get posted.  Heavy sigh.
 
 
Oh, and Happy Thanksgiving. ;-)
 
Chris Barber
Houston


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