X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ironmaiden.mail.utexas.edu ([128.83.32.53] verified) by logan.com (CommuniGate Pro SMTP 5.1.1) with ESMTP id 1517301 for flyrotary@lancaironline.net; Tue, 31 Oct 2006 11:14:02 -0500 Received-SPF: none receiver=logan.com; client-ip=128.83.32.53; envelope-from=mark.steitle@austin.utexas.edu DomainKey-Signature: s=main; d=austin.utexas.edu; c=nofws; q=dns; b=dZnqhQjdyT7jsG9M2b4NdhbEgRrSnqjPCu6FK/5iXWJ16gZWSLH3RROav2nMPFA4WoBzEj3TphuttuKmlTuVEcfjsmR01HYaPS2D0hHmhXTh+5hLBOjnjn4Zoj75DWmYAfZvnDhMWx8n1+AX0KxzEicuMGw3jw8YOA70rP5XRK8=; Received: from exb01.austin.utexas.edu (HELO MAIL01.austin.utexas.edu) ([129.116.87.142]) by ironmaiden.mail.utexas.edu with ESMTP; 31 Oct 2006 10:13:41 -0600 Received: from MAIL02.austin.utexas.edu ([129.116.87.143]) by MAIL01.austin.utexas.edu with Microsoft SMTPSVC(6.0.3790.1830); Tue, 31 Oct 2006 10:13:40 -0600 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C6FD07.87A8C616" Subject: RE: [FlyRotary] Re: fuel pumps Date: Tue, 31 Oct 2006 10:13:40 -0600 Message-ID: <5B59870CA143DD408BD6279374B74C8B01D571EE@MAIL02.austin.utexas.edu> In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: fuel pumps Thread-Index: Acb9BGnSrXK8DQQDSqyV68IPXw7sqAAAUf7Q From: "Mark R Steitle" To: "Rotary motors in aircraft" Return-Path: mark.steitle@austin.utexas.edu X-OriginalArrivalTime: 31 Oct 2006 16:13:40.0764 (UTC) FILETIME=[8790A5C0:01C6FD07] This is a multi-part message in MIME format. ------_=_NextPart_001_01C6FD07.87A8C616 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Bill,=20 I checked Summit Racing's web site and they have a product called Adjust-A-Jet that might work. Its not exactly what I was thinking of, but close. Here is the description... Metering Block, Adjust-A-Jet, Billet Aluminum, Purple Anodized, Holley, 2300/4150/4160/4150HP, Each=20 Never mess with jets again.=20 The Adjust-A-Jet from Percy's High Performance means you'll never have to tear apart your carb to swap jets again. No rushing during qualifiers, no messing around between heats, no worrying about gas spilling onto a hot engine, no more hurried gasket replacements. The plate is infinitely adjustable, and can be tuned while the engine is running for instant adjustments. The main metering is infinitely adjustable too. Plus, everything you've ever learned about Holley still applies.=20 =20 I actually have one of the Holly manual mixture adjusters. It replaces the metering block in the Holly carburetor and allows a/f adjustment while driving. But I have no idea where it was purchased from, or if it is even still available. I got it from my dad who has long passed away. I'll check with the one local speed shop here in Austin and see if they can shed some light on it. There are a bunch of old-timers running the place. So, if anybody will know, it would likely be one of them. =20 Mark =20 =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of wrjjrs@aol.com Sent: Tuesday, October 31, 2006 9:47 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: fuel pumps =20 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=20 =20 =20 -----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. =20 Mark S. =20 ________________________________ 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 =20 =20 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. =20 =20 Hi Lynn,=20 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.=20 Any comments or suggestions?=20 BR, Dave McC=20 ________________________________ size=3D2 width=3D"100%" align=3Dcenter>=20 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. ------_=_NextPart_001_01C6FD07.87A8C616 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Bill,

I checked Summit Racing’s web = site and they have a product called Adjust-A-Jet that might work.  Its = not exactly what I was thinking of, but close.  Here is the = description…

Metering Block, Adjust-A-Jet, Billet Aluminum, Purple Anodized, Holley, 2300/4150/4160/4150HP, Each

Never mess with jets again.

The Adjust-A-Jet from Percy's High Performance means you'll never have = to tear apart your carb to swap jets again. No rushing during qualifiers, no = messing around between heats, no worrying about gas spilling onto a hot engine, = no more hurried gasket replacements. The plate is infinitely adjustable, and can = be tuned while the engine is running for instant adjustments. The main = metering is infinitely adjustable too. Plus, everything you've ever learned about = Holley still applies.

 

I actually have one of the Holly = manual mixture adjusters.  It replaces the metering block in the Holly carburetor = and allows a/f adjustment while driving.  But I have no idea where it = was purchased from, or if it is even still available.  I got it from my = dad who has long passed away.   I’ll check with the one = local speed shop here in Austin and see if they can shed some light on it.  There are a bunch of old-timers running the place.  So, if anybody will know, it would = likely be one of them.

 

Mark  =

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of wrjjrs@aol.com
Sent: Tuesday, October = 31, 2006 9:47 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = fuel pumps

 

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

= size=3D2 width=3D"100%" align=3Dcenter>

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.

------_=_NextPart_001_01C6FD07.87A8C616--