X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-d23.mx.aol.com ([205.188.139.137] verified) by logan.com (CommuniGate Pro SMTP 5.1.1) with ESMTP id 1517373 for flyrotary@lancaironline.net; Tue, 31 Oct 2006 11:39:33 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.139.137; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-d23.mx.aol.com (mail_out_v38_r7.6.) id q.413.1b47f2f2 (60469) for ; Tue, 31 Oct 2006 11:39:06 -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 MAILCIAAOLM022-ec3545477c2a66; Tue, 31 Oct 2006 11:39:06 -0500 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: fuel pumps Date: Tue, 31 Oct 2006 11:39:06 -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_8C8CB223791CCCA_5D8_14B61_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 11:39:06 -0500 Message-Id: <8C8CB2237942F22-5D8-B1FC@MBLK-M36.sysops.aol.com> X-AOL-IP: 64.12.136.80 X-Spam-Flag: NO ----------MB_8C8CB223791CCCA_5D8_14B61_MBLK-M36.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Sounds good Mark, If your running a carb it should be modded for leaning. The item mentioned=20= sounds right, you would have to see it to be sure it could be made in-flight= adjustable. Bill Jepson=20 =20 =20 -----Original Message----- From: mark.steitle@austin.utexas.edu To: flyrotary@lancaironline.net Sent: Tue, 31 Oct 2006 8:13 AM Subject: [FlyRotary] Re: fuel pumps Bill,=20 I checked Summit Racing=E2=80=99s web site and they have a product called Ad= just-A-Jet that might work. Its not exactly what I was thinking of, but clo= se. Here is the description=E2=80=A6 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 te= ar apart your carb to swap jets again. No rushing during qualifiers, no mess= ing around between heats, no worrying about gas spilling onto a hot engine,=20= no more hurried gasket replacements. The plate is infinitely adjustable, and= can be tuned while the engine is running for instant adjustments. The main=20= metering is infinitely adjustable too. Plus, everything you've ever learned=20= about Holley still applies.=20 =20 I actually have one of the Holly manual mixture adjusters. It replaces the=20= metering block in the Holly carburetor and allows a/f adjustment while drivi= ng. But I have no idea where it was purchased from, or if it is even still=20= available. I got it from my dad who has long passed away. I=E2=80=99ll ch= eck with the one local speed shop here in Austin and see if they can shed so= me light on it. There are a bunch of old-timers running the place. So, if=20= anybody will know, it would likely be one of them. =20 Mark =20 =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Beha= lf 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 he= adlights" 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 Aerotrad= er 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 contr= ol. 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 Beha= lf 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. A= nd 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 matte= r, for altitude mixture adjustment. I have heard of a vacuum line to the inl= et manifold thru a needle valve to the fuel bowl, then vary the pressure hea= d in the fuel bowl. And, jetting the carb at sea level with the choke on, an= d 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 to= ols, free access to millions of high-quality videos from across the web, fre= e AOL Mail and more. ________________________________________________________________________ Check out the new AOL. Most comprehensive set of free safety and security t= ools, free access to millions of high-quality videos from across the web, fr= ee AOL Mail and more. ----------MB_8C8CB223791CCCA_5D8_14B61_MBLK-M36.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"
Sounds good Mark,
 If your running a carb it should be modded for leaning. The item=20= mentioned sounds right, you would have to see it to be sure it could be made= in-flight adjustable.
Bill Jepson 
 
 
-----Original Message-----
From: mark.steitle@austin.utexas.edu
To: flyrotary@lancaironline.net
Sent: Tue, 31 Oct 2006 8:13 AM
Subject: [FlyRotary] Re: fuel pumps

Bill,
I checked Summit Racin= g=E2=80=99s web site and they have a product called Adjust-A-Jet that might=20= work.  Its not exactly what I was thinking of, but close.  Here is= the description=E2=80=A6
Metering Block, Adjust-A-Jet, Billet Aluminum, Purple An= odized, 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 te= ar apart your carb to swap jets again. No rushing during qualifiers, no mess= ing around between heats, no worrying about gas spilling onto a hot engine,=20= no more hurried gasket replacements. The plate is infinitely adjustable, and= can be tuned while the engine is running for instant adjustments. The main=20= metering is infinitely adjustable too. Plus, everything you've ever learned=20= 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 h= ave no idea where it was purchased from, or if it is even still available.&n= bsp; I got it from my dad who has long passed away.   I=E2=80=99ll= 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.&= nbsp; 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, 2= 006 9:47 AM
To: Rotary motors in aircraf= t
Subject: [FlyRotary] Re: fue= l pumps
 
Sorry to say Mark most speed shop personel will give&nb= sp;you the "deer in the headlights" look if you talk about leaning. In fact=20= some corporate shops won't sell you parts if you mention and airplane FWIW.=20= 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 adapt= er for Holly carbs that allow on-the-fly mixture control.  Not sure of=20= who, but I bet a good speed shop would know.
 
Mark S.<= /div>
 
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of david mccandless
Sent: Monday, October 30, 20= 06 10:58 PM
To: Rotary motors in aircraf= t
Subject: [FlyRotary] Re: fue= l pumps
 
 
You just need 3.5 Psi for the Weber. Although I u= se 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 an= y carb for that matter, for altitude mixture adjustment. I have heard of a v= acuum line to the inlet manifold thru a needle valve to the fuel bowl, then=20= vary the pressure head in the fuel bowl. And, jetting the carb at sea level=20= 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>
Che= ck out the new AOL. Most comprehensive set of free safety and= security tools, free access to millions of high-quality videos from across=20= the web, free AOL Mail and more.
Check=20= out the new AOL. Most comprehensive set of free safety and security=20= tools, free access to millions of high-quality videos from across the web, f= ree AOL Mail and more.
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