X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from ms-smtp-04.southeast.rr.com ([24.25.9.103] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2043314 for flyrotary@lancaironline.net; Mon, 14 May 2007 08:49:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-04.southeast.rr.com (8.13.6/8.13.6) with SMTP id l4ECm8WP001892 for ; Mon, 14 May 2007 08:48:09 -0400 (EDT) Message-ID: <001601c79626$58add760$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: R-26B 4 Rotor Air Measurement Approach Date: Mon, 14 May 2007 08:49:40 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0013_01C79604.D0368CE0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0013_01C79604.D0368CE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, the R-26B engine used the a-N method to measure intake air amount = using throttle opening and engine speed as parameters. Ed ----- Original Message -----=20 From: WRJJRS@aol.com=20 To: Rotary motors in aircraft=20 Sent: Monday, May 14, 2007 3:51 AM Subject: [FlyRotary] Re: EC2 smoke question In a message dated 5/12/2007 12:43:50 PM Pacific Standard Time, = Lehanover@aol.com writes: Perhaps a .020" hole in both ends of the gage line. You have it = sitting on a resonant at idle and the gage will go away after just a = bit. Like putting a fuel pressure gage too close to the outlet of a = sliding vane fuel pump. It just shakes to pieces. With the good breathing required for good power, there will be no = manifold pressure (vacuum) until the RPM is close to cruise, And then = only if cruise is at a bit less than wide open throttle. Maybe the air = filter will provide enough drag to get a reading. In fuel injected = systems, the lack of a choke, or venturi just adds to the problem. Lynn E. Hanover The solution Lynn is the hot wire mass flow sensor. I'm not sure if = Tracy could incorporate one in place of the map sensor. The circuitry = may be more complicated. There are comercial versions available fro use = with many of the throttle bodies. A single P-port inlet tube without an = air box poses a real problem. Some of the older mechanical systems are = easier to work with on single tube openings. Many of the bikes used an = alpha-n system measuring only throttle opening RPM and had a sensor for = speed, usually at the rear sprocket. The needed injector map was VERY = complex and hard to modify. True mass flow would be better. I wonder = what the LeMans 26B used?=20 Bill Jepson -------------------------------------------------------------------------= ----- See what's free at AOL.com. ------=_NextPart_000_0013_01C79604.D0368CE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
 
Bill, the R-26B engine used the a-N method to = measure=20  intake air amount using throttle opening and engine speed as=20 parameters.
 
Ed
----- Original Message -----
From:=20 WRJJRS@aol.com
Sent: Monday, May 14, 2007 3:51 = AM
Subject: [FlyRotary] Re: EC2 = smoke=20 question

In a message dated 5/12/2007 12:43:50 PM Pacific Standard Time, = Lehanover@aol.com writes:
Perhaps a .020" hole in both ends of the gage line. You have it = sitting=20 on a resonant at idle and the gage will go away after just a bit. = Like=20 putting a fuel pressure gage too close to the outlet of a sliding = vane fuel=20 pump. It just shakes to pieces.
 
With the good breathing required for good power, there will be = no=20 manifold pressure (vacuum) until the RPM is close to cruise, And = then only=20 if cruise is at a bit less than wide open throttle. Maybe the air = filter=20 will provide enough drag to get a reading. In fuel injected systems, = the=20 lack of a choke, or venturi just adds to the problem.
 
Lynn E. Hanover
The solution Lynn is the hot wire mass flow = sensor. I'm not=20 sure if Tracy could incorporate one in place of the map sensor. The = circuitry=20 may be more complicated. There are comercial versions available fro = use with=20 many of the throttle bodies. A single P-port inlet tube without an air = box=20 poses a real problem. Some of the older mechanical systems are easier = to work=20 with on single tube openings. Many of the bikes used an alpha-n system = measuring only throttle opening RPM and had a sensor for speed, = usually at the=20 rear sprocket. The needed injector map was VERY complex and hard to = modify.=20 True mass flow would be better. I wonder what the LeMans 26B used?=20
Bill Jepson



See what's free at AOL.com.=20
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