X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from omta1.toronto.rmgopenwave.com ([4.59.182.99] verified) by logan.com (CommuniGate Pro SMTP 5.3.11) with ESMTP id 4674587 for flyrotary@lancaironline.net; Fri, 14 Jan 2011 09:33:44 -0500 Received-SPF: pass receiver=logan.com; client-ip=4.59.182.99; envelope-from=lacombr@nbnet.nb.ca Received: from torspm04.toronto.rmgopenwave.com ([142.167.191.103]) by tormtz01.toronto.rmgopenwave.com (InterMail vM.8.00.01.05 201-2244-105-105-20091224) with ESMTP id <20110114143308.HMRX16634.tormtz01.toronto.rmgopenwave.com@torspm04.toronto.rmgopenwave.com> for ; Fri, 14 Jan 2011 09:33:08 -0500 Received: from PCdeRita ([142.167.191.103]) by torspm04.toronto.rmgopenwave.com with SMTP id <20110114143308.YVDA13657.torspm04.toronto.rmgopenwave.com@PCdeRita> for ; Fri, 14 Jan 2011 09:33:08 -0500 Message-ID: From: "Rino" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Apex seal update cont more pix Date: Fri, 14 Jan 2011 10:32:46 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007E_01CBB3D6.621752A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18263 X-Opwv-CommTouchExtSvcRefID: str=0001.0A020209.4D305EA4.0206,ss=1,fgs=0 This is a multi-part message in MIME format. ------=_NextPart_000_007E_01CBB3D6.621752A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Chris, I lost a rear iron from detonation when I first started experimenting = with a turbo 13b. The main reason was a lean mixture. The formula for detonation is: high intake manifold pressure, high = intake air temperature and a lean mixture. I would never go over 30" intake manifold pressure before I know for = sure that the mixture is NOT lean over the full spectrum -- from idle to = full power. One way is to watch the manifold pressure as you open the = throttle and limit it to 30". Do not open to full throttle until you = know you do not have a lean mixture spot. If this problem occur on one rotor only I would check the secondary fuel = injectors delivery rate. If one deliver more fuel than the other, one = rotor will run leaner. Then, you probably cannot tell by the o2 sensor = readings. Rino ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Friday, January 14, 2011 7:49 AM Subject: [FlyRotary] Re: Apex seal update cont more pix Chris, Well, at least this will be an inexpensive repair, but any idea what = caused the springs to flatten out like that? =20 Mark On Thu, Jan 13, 2011 at 8:51 PM, Chris Barber = wrote: Remember, these seals are on their sides. Also note the brocken = corner seal. Sorry for the blur on the close ups -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_007E_01CBB3D6.621752A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Chris,
 
I lost a rear iron from detonation when = I first=20 started experimenting with a turbo 13b.  The main reason was a lean = mixture.
The formula for detonation is: high = intake=20 manifold pressure, high intake air temperature and a lean=20 mixture.
I would never go over 30" intake = manifold pressure=20 before I know for sure that the mixture is NOT lean over the full = spectrum --=20 from idle to full power.  One way is to watch the manifold = pressure as=20 you open the throttle and limit it to 30".  Do not open to full = throttle=20 until you know you do not have a lean mixture spot.
 
If this problem occur on one rotor only = I would=20 check the secondary fuel injectors delivery rate.  If = one deliver more=20 fuel than the other, one rotor will run leaner.  Then, you probably = cannot=20 tell by the o2 sensor readings.
 
Rino
 
----- Original Message -----
From:=20 Mark = Steitle=20
Sent: Friday, January 14, 2011 = 7:49=20 AM
Subject: [FlyRotary] Re: Apex = seal update=20 cont more pix

Chris,

Well, at least this will be an inexpensive repair, but any idea = what=20 caused the springs to flatten out like that?  

Mark

On Thu, Jan 13, 2011 at 8:51 PM, Chris Barber = <cbarber@texasattorney.net&g= t;=20 wrote:
Remember,=20 these seals are on their sides.  Also note = the brocken=20 corner seal.  Sorry for the blur on the close=20 ups

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub: =   http://mail.lancaironline.net:81/lists/flyrotary/List.htm= l


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