X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTP id 2963399 for flyrotary@lancaironline.net; Wed, 11 Jun 2008 13:26:03 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([75.191.186.236]) by cdptpa-omta04.mail.rr.com with SMTP id <20080611172522.RULP7074.cdptpa-omta04.mail.rr.com@edward2> for ; Wed, 11 Jun 2008 17:25:22 +0000 Message-ID: <000901c8cbe8$21989c80$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: EGT Probe Location [FlyRotary] Re: Sensors Date: Wed, 11 Jun 2008 13:25:23 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01C8CBC6.9A41DD30" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C8CBC6.9A41DD30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Greg, with my 13B my two EGT probes are 8" from the exhaust port. High = temps read 1650F, so could be a few degrees cooler than if closer, have = replaced them once with 10 years of usage. =20 I have one O2 sensor in my number 1 rotor's header. Its located 12 " = from Exhaust port - have replaced it once and I use 100 LL most of the = time. The Leaded gasoline does not appear to diminish is functioning = as an Air/Fuel ratio indicator although all indications is that even a = small amount of lead ruins the O2 sensor for its use as an controller = element in the automobile ECU. Ed ----- Original Message -----=20 From: Greg Ward=20 To: Rotary motors in aircraft=20 Sent: Wednesday, June 11, 2008 2:37 AM Subject: [FlyRotary] Re: Sensors 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_0006_01C8CBC6.9A41DD30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Greg, with my 13B my two EGT probes are = 8" from=20 the exhaust port.  High temps read 1650F, so  could be a few = degrees=20 cooler than if closer, have replaced them once with 10 years of = usage. =20
 
I have one O2 sensor in my number 1 = rotor's=20 header.   Its located 12 " from Exhaust port - have replaced = it once=20 and I use 100 LL most of the time. The   Leaded gasoline does = not=20 appear to diminish is functioning as an Air/Fuel ratio indicator = although all=20 indications is that even a small amount of lead ruins the O2 sensor for = its use=20 as an controller element in the automobile ECU.
 
Ed
----- Original Message -----
From:=20 Greg=20 Ward
Sent: Wednesday, June 11, 2008 = 2:37=20 AM
Subject: [FlyRotary] Re: = Sensors

As long as we're at it about sensors, how = about=20 EGT?  I am turboed on the 20B, and have a 3 into one collector = going to=20 the Garrett turbo.  Do I want to have individual EGT's on each = pipe, or=20 one on the exhaust side of the turbo, or all 4?  My collector = pipes are=20 only about 8-10" before they hit the flange, so here too, I wonder = where the=20 best place is to place the sensors.   Thanks for all the = input on=20 the MAP, going to locate it close behind the valve = body.
Greg Ward
Lancair 20B, details, details,=20 details 
----- Original Message -----
From:=20 Bill Bradburry
To: Rotary motors in = aircraft=20
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=20 the bottom of the manifold to the regulator.  I have a vacuum = gage=85I=20 guess I should check the steadiness and consistency of all three=20 ports. 

 

Bill

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

 

Bill=20 B 

Bill;

 

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

 

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

 

Al

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