Return-Path: Received: from fed1rmmtao08.cox.net ([68.230.241.31] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 384925 for flyrotary@lancaironline.net; Mon, 30 Aug 2004 12:27:39 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.31; envelope-from=ALVentures@cox.net Received: from BigAl ([68.107.116.221]) by fed1rmmtao08.cox.net (InterMail vM.6.01.03.02.01 201-2131-111-104-103-20040709) with ESMTP id <20040830162708.TWMQ252.fed1rmmtao08.cox.net@BigAl> for ; Mon, 30 Aug 2004 12:27:08 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: EM2 - liquid emp 2 hookup Date: Mon, 30 Aug 2004 09:27:23 -0700 Message-ID: <000001c48eae$3ae92c70$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C48E73.8E8F0F60" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C48E73.8E8F0F60 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Rusty; =20 The diagram you posted is correct; but, just discussed with Tracy and understood that you should NOT use the voltage source (red lead) from = the OAT sender. I am going to pick up the +5v from Aux air 1 - he said that should be fine. =20 I will be doing the repair on the redrive myself - report later. =20 BTW; further to the pulse filtering on the MAP, I realized that on the = dyno we had teed into the line between the port and the EC2 for the line to = the dyno MAP readout - which has an accumulator can in the line. Which apparently explains we were able to get pretty good slow speed running; = once we got it leaned out enough. I'm thinking that the best approach is = like an R-C filter; some accumulator volume teed into the line (dead end) - capacitor, and some restrictor orifice near the EC2 connection - = resistor. The question is the correct volume and restrictor size. Don't want to = go too far and reduce the response time too much. My guess is that a .040 restriction will have little effect; maybe .015 - .020. The amount of = flow in and out of the little sensor with MAP changes is very small. =20 Al ------=_NextPart_000_0001_01C48E73.8E8F0F60 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Rusty;

 

The diagram you posted is = correct; but, just discussed with Tracy and understood that you should NOT use the voltage source = (red lead) from the OAT sender.  I am going to pick up the +5v from Aux = air 1 – he said that should be fine.

 

I will be doing the repair on the = redrive myself – report later.

 

BTW; further to the pulse = filtering on the MAP, I realized that on the dyno we had teed into the line between = the port and the EC2 for the line to the dyno MAP readout – which has an = accumulator can in the line.  Which apparently explains we were able to get = pretty good slow speed running; once we got it leaned out enough.  = I’m thinking that the best approach is like an R-C filter; some accumulator = volume teed into the line (dead end) - capacitor, and some restrictor orifice = near the EC2 connection - resistor. The question is the correct volume and = restrictor size.  Don’t want to go too far and reduce the response time = too much.  My guess is that a .040 restriction will have little effect; = maybe .015 - .020.  The amount of flow in and out of the little sensor = with MAP changes is very small.

 

Al

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