Return-Path: Received: from fed1rmmtao12.cox.net ([68.230.241.27] verified) by logan.com (CommuniGate Pro SMTP 4.2.4) with ESMTP id 452634 for flyrotary@lancaironline.net; Mon, 04 Oct 2004 19:07:30 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.27; envelope-from=ALVentures@cox.net Received: from BigAl ([68.107.116.221]) by fed1rmmtao12.cox.net (InterMail vM.6.01.03.04 201-2131-111-106-20040729) with ESMTP id <20041004230650.FAZ326.fed1rmmtao12.cox.net@BigAl> for ; Mon, 4 Oct 2004 19:06:50 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: MAP pulses (20B) Date: Mon, 4 Oct 2004 16:07:07 -0700 Message-ID: <001b01c4aa66$ded0f9c0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001C_01C4AA2C.327221C0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_001C_01C4AA2C.327221C0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Rusty wrote: As you may recall, I tried using a fuel filter and a needle valve to = smooth out my idle, with absolutely no success. I've had a normal vacuum gauge = on the line before, and never saw any significant bouncing=20 One of the things I concluded fooling around with the MAP filtering was = that it seemed to need about 3 cu. in. of volume (line plus filter, or = whatever) to act as an effective "spring". Have you estimated how much volume you have? Al ------=_NextPart_000_001C_01C4AA2C.327221C0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Rusty wrote:

As you may = recall, I tried using a fuel filter and a needle valve to smooth out my idle, with absolutely no success.  I've had a normal vacuum gauge on the line = before, and never saw any significant bouncing

One of the things I concluded fooling = around with the MAP filtering was that it seemed to need about 3 cu. in. of = volume (line plus filter, or whatever) to act as an effective = “spring”.  Have you estimated how much volume you have?

Al

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