X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-d21.mx.aol.com ([205.188.144.207] verified) by logan.com (CommuniGate Pro SMTP 5.1.1) with ESMTP id 1517222 for flyrotary@lancaironline.net; Tue, 31 Oct 2006 10:47:16 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.144.207; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-d21.mx.aol.com (mail_out_v38_r7.6.) id q.bdf.7782c1d (60468) for ; Tue, 31 Oct 2006 10:46:54 -0500 (EST) Received: from MBLK-M36 (mblk-m36.mblk.aol.com [64.12.136.80]) by ciaaol-m02.mx.aol.com (v113.6) with ESMTP id MAILCIAAOLM021-ec3445476fee69; Tue, 31 Oct 2006 10:46:54 -0500 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: fuel pumps Date: Tue, 31 Oct 2006 10:46:54 -0500 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: wrjjrs@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8C8CB1AEC7332C2_5D8_143F0_MBLK-M36.sysops.aol.com" X-Mailer: AOL WebMail 21462 Received: from 65.161.241.3 by MBLK-M36.sysops.aol.com (64.12.136.80) with HTTP (WebMailUI); Tue, 31 Oct 2006 10:46:54 -0500 Message-Id: <8C8CB1AEC75951A-5D8-AE29@MBLK-M36.sysops.aol.com> X-AOL-IP: 64.12.136.80 X-Spam-Flag: NO ----------MB_8C8CB1AEC7332C2_5D8_143F0_MBLK-M36.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii" Sorry to say Mark most speed shop personel will give you the "deer in the headlights" look if you talk about leaning. In fact some corporate shops won't sell you parts if you mention and airplane FWIW. Check the back of Aerotrader for some of the small sales establishments. Bill Jepson -----Original Message----- From: mark.steitle@austin.utexas.edu To: flyrotary@lancaironline.net Sent: Tue, 31 Oct 2006 5:28 AM Subject: [FlyRotary] Re: fuel pumps Dave, Someone makes an adapter for Holly carbs that allow on-the-fly mixture control. Not sure of who, but I bet a good speed shop would know. Mark S. From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of david mccandless Sent: Monday, October 30, 2006 10:58 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: fuel pumps You just need 3.5 Psi for the Weber. Although I use 6 Psi in the race car. And some carb tricks on top of that. Hi Lynn, do you have any ideas on methods to lean a weber, or any carb for that matter, for altitude mixture adjustment. I have heard of a vacuum line to the inlet manifold thru a needle valve to the fuel bowl, then vary the pressure head in the fuel bowl. And, jetting the carb at sea level with the choke on, and then backing off the choke as the airplane climbs. Any comments or suggestions? BR, Dave McC ________________________________________________________________________ Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. ----------MB_8C8CB1AEC7332C2_5D8_143F0_MBLK-M36.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/html; charset="us-ascii"

Sorry to say Mark most speed shop personel will give you the "deer in the headlights" look if you talk about leaning. In fact some corporate shops won't sell you parts if you mention and airplane FWIW. Check the back of Aerotrader for some of the small sales establishments.

Bill Jepson

-----Original Message-----
From: mark.steitle@austin.utexas.edu
To: flyrotary@lancaironline.net
Sent: Tue, 31 Oct 2006 5:28 AM
Subject: [FlyRotary] Re: fuel pumps

Dave,

Someone makes an adapter for Holly carbs that allow on-the-fly mixture control. Not sure of who, but I bet a good speed shop would know.

Mark S.

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of david mccandless
Sent: Monday, October 30, 2006 10:58 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: fuel pumps

You just need 3.5 Psi for the Weber. Although I use 6 Psi in the race car. And some carb tricks on top of that.

Hi Lynn,

do you have any ideas on methods to lean a weber, or any carb for that matter, for altitude mixture adjustment. I have heard of a vacuum line to the inlet manifold thru a needle valve to the fuel bowl, then vary the pressure head in the fuel bowl. And, jetting the carb at sea level with the choke on, and then backing off the choke as the airplane climbs.

Any comments or suggestions?

BR, Dave McC

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