X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA03.westchester.pa.mail.comcast.net ([76.96.62.32] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTP id 2962670 for flyrotary@lancaironline.net; Wed, 11 Jun 2008 02:35:43 -0400 Received-SPF: none receiver=logan.com; client-ip=76.96.62.32; envelope-from=gregw@onestopdesign.biz Received: from OMTA01.westchester.pa.mail.comcast.net ([76.96.62.11]) by QMTA03.westchester.pa.mail.comcast.net with comcast id cWYb1Z0080EZKEL5300K00; Wed, 11 Jun 2008 06:35:05 +0000 Received: from gregoryii ([24.6.40.29]) by OMTA01.westchester.pa.mail.comcast.net with comcast id cWb41Z0030dkeQQ3MWb4L2; Wed, 11 Jun 2008 06:35:05 +0000 X-Authority-Analysis: v=1.0 c=1 a=aXU8pU0XNggdMN2Z_AgA:9 a=hRQlYVlNoLy0YlRc_PgA:7 a=DsVOSod6dOcNtDBw0gWFs4rEePAA:4 a=EzXvWhQp4_cA:10 a=9XSpoOj3B7kA:10 a=SSmOFEACAAAA:8 a=Wqltyr4cNx_ToDJeSnUA:9 a=Sjp7cP8N7AiuFbYf10QA:7 a=TTqkGq53nbPcY9fkkGqHAHyrNtIA:4 a=WD2S8eiFAUIA:10 a=V9aB5C61OLQA:10 a=eJojReuL3h0A:10 a=AfD3MYMu9mQA:10 Message-ID: <750A5B429C024C27BE54910361C24547@yosemite.onestopdesign.biz> From: "Greg Ward" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Sensors Date: Tue, 10 Jun 2008 23:37:02 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_03C2_01C8CB52.E24DB780" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5512 This is a multi-part message in MIME format. ------=_NextPart_000_03C2_01C8CB52.E24DB780 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable As long as we're at it about sensors, how about EGT? I am turboed on = the 20B, and have a 3 into one collector going to the Garrett turbo. Do = I want to have individual EGT's on each pipe, or one on the exhaust side = of the turbo, or all 4? My collector pipes are only about 8-10" before = they hit the flange, so here too, I wonder where the best place is to = place the sensors. Thanks for all the input on the MAP, going to = locate it close behind the valve body. Greg Ward Lancair 20B, details, details, details=20 ----- Original Message -----=20 From: Bill Bradburry=20 To: Rotary motors in aircraft=20 Sent: Tuesday, June 10, 2008 8:32 PM Subject: [FlyRotary] Re: Sensors I have two MAP ports on the rear of my intake plenum that feed the = EC-2. I am taking the pressure from this third port at the bottom of = the manifold to the regulator. I have a vacuum gage.I guess I should = check the steadiness and consistency of all three ports.=20 =20 Bill -------------------------------------------------------------------------= ----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Al Gietzen Sent: Tuesday, June 10, 2008 9:26 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Sensors Perhaps I should add that the original line from the sensing ports to = the pressure regulator was quite short; maybe 10"; so there was very = little damping there. =20 My fuel pressure regulator (Airmotive) is getting its MAP from the two = small (1/8 ") tubes that lay in the primary ports on the Renesis.Are you = saying that I should move this pressure reference to someplace else? = You say you know it is not good.How do you know this? =20 Bill B=20 Bill; =20 I was measuring fuel pressure to the fuel rails to verify the EM2 = calibration. The needle on the gauge was swinging very rapidly from = about 20 to 40. I don't recall what RPM, but I guess near idle. = Perhaps stating that "it is not good" is an overstatement, and perhaps = it just happened that the pressure pulses hit a resonance in the gauge; = but my judgment was that it could affect the engine operation and could = be damaging to something else long term. I had already put damping in = MAP line to the EC2, so I decided to T it into that line, and the = pressure pulsing went away. =20 I have a 3-barrel TWM TB on a short intake manifold. The MAP sensing = ports are just downstream of the throttle plates. =20 Al ------=_NextPart_000_03C2_01C8CB52.E24DB780 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
As long as we're at it about sensors, how about = EGT? =20 I am turboed on the 20B, and have a 3 into one collector going to the = Garrett=20 turbo.  Do I want to have individual EGT's on each pipe, or one on = the=20 exhaust side of the turbo, or all 4?  My collector pipes are only = about=20 8-10" before they hit the flange, so here too, I wonder where the best = place is=20 to place the sensors.   Thanks for all the input on the MAP, = going=20 to locate it close behind the valve body.
Greg Ward
Lancair 20B, details, details,=20 details 
----- Original Message -----
From:=20 Bill=20 Bradburry
Sent: Tuesday, June 10, 2008 = 8:32=20 PM
Subject: [FlyRotary] Re: = Sensors

I have two MAP ports on the rear of my = intake plenum=20 that feed the EC-2.  I am taking the pressure from this third = port at the=20 bottom of the manifold to the regulator.  I have a vacuum = gage=85I guess I=20 should check the steadiness and consistency of all three=20 ports. 

 

Bill

From:=20 Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net] On=20 Behalf Of Al Gietzen
Sent: Tuesday, June 10, 2008 = 9:26=20 PM
To: = Rotary motors in aircraft
Subject: [FlyRotary] Re:=20 Sensors

Perhaps I = should=20 add that the original line from the sensing ports to the pressure = regulator=20 was quite short; maybe 10=94; so there was very little damping=20 there.

 

My fuel pressure regulator = (Airmotive) is=20 getting its MAP from the two small (1/8 =93) tubes that lay in the = primary ports=20 on the Renesis=85Are you saying that I should move this pressure = reference to=20 someplace else?  You say you know it is not good=85How do you = know=20 this?

 

Bill=20 B 

Bill;

 

I was=20 measuring fuel pressure to the fuel rails to verify the EM2 = calibration. =20 The needle on the gauge was swinging very rapidly from about 20 to = 40.  I=20 don=92t recall what RPM, but I guess near idle.  Perhaps stating = that =93it=20 is not good=94 is an overstatement, and perhaps it just happened that = the=20 pressure pulses hit a resonance in the gauge; but my judgment was that = it=20 could affect the engine operation and could be damaging to something = else long=20 term.  I had already put damping in MAP line to the EC2, so I = decided to=20 T it into that line, and the pressure pulsing went=20 away.

 

I have=20 a 3-barrel TWM TB on a short intake manifold.  The MAP sensing = ports are=20 just downstream of the throttle plates.

 

Al

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