X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-ma04.mx.aol.com ([64.12.206.42] verified) by logan.com (CommuniGate Pro SMTP 6.0c2) with ESMTP id 5906394 for flyrotary@lancaironline.net; Tue, 27 Nov 2012 09:57:48 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.206.42; envelope-from=Lehanover@aol.com Received: from mtaomg-da02.r1000.mx.aol.com (mtaomg-da02.r1000.mx.aol.com [172.29.51.138]) by imr-ma04.mx.aol.com (8.14.1/8.14.1) with ESMTP id qAREv495007007 for ; Tue, 27 Nov 2012 09:57:06 -0500 Received: from core-moa005a.r1000.mail.aol.com (core-moa005.r1000.mail.aol.com [172.29.233.17]) by mtaomg-da02.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id 8BD4FE000090 for ; Tue, 27 Nov 2012 09:57:06 -0500 (EST) From: Lehanover@aol.com Message-ID: <1b4a.171978d8.3de62ec0@aol.com> Date: Tue, 27 Nov 2012 09:57:04 -0500 (EST) Subject: Fwd: [FlyRotary] Fwd: P Port 101 To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_1b4a.171978d8.3de62ec0_boundary" X-Mailer: AOL 9.7 sub 55 X-Originating-IP: [173.88.28.139] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1354028226; bh=5hD2tTponay7Vn9Oc54rc8u2K+z0l6iYnzJJ9tV8G1w=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=XQ1XdJqoiIc4krveN8Sh3WB69M0EnJ/oC3r1/z/df/9N3H7VOsmX9+hkKOfqsKl+3 +q6mTZv2ZK+dXGLAQ9x6kXoJ4tUJwBy640LqeHFWGB1L9p7j0K/H9WewZ5tQRtJWub QUHanHuMxVGbPrOBwx0waVuc+Pxpb+BFP8/PTOsY= X-AOL-SCOLL-SCORE: 0:2:410693632:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d338a50b4d4c27c4d --part1_1b4a.171978d8.3de62ec0_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Lucas Slide Valve fuel injection is probably the only good thing Lucas ever produced. All metal. Many tiny roller bearings. Friction free. Uses 95 PSI fuel pressure. The injectors shoot right onto the slide. However, there are no fuel leaks from the system, so this is no problem. Idle under 1,000 RPM is typical. I should never have sold my last one. The idea is to grasp that last 4 or 5 HP from a Formula One engine. For airplanes it is an answer in search of a question. Years ago we ran a factory Pport 12-A in the racer. The housings had been hopped up by Mandeville for later closing points. So the engine had very little low speed torque, but was drivable at low speed. The carb was a 48 IDF Weber. No balance tube was used. Idle was as low as you wanted it to be. I would use two TBs with injectors after the butterflies. Just my opinion. I could be completely wrong. Lynn E. Hanover ____________________________________ From: jskmberki@windstream.net Reply-to: flyrotary@lancaironline.net To: flyrotary@lancaironline.net Sent: 11/27/2012 7:36:00 A.M. Eastern Standard Time Subj: [FlyRotary] Fwd: P Port 101 Sent from my iPhone Begin forwarded message: From: "Berki, Joseph UTAS" <_Joseph.Berki@utas.utc.com_ (mailto:Joseph.Berki@utas.utc.com) > Date: November 27, 2012 7:30:28 AM EST To: "_jskmberki@windstream.net_ (mailto:jskmberki@windstream.net) " <_jskmberki@windstream.net_ (mailto:jskmberki@windstream.net) > Subject: P Port 101 Mark, I am trying to evaluate what to do with the fuel system including the slide throttle. Based on your experience in the real world, why does it bind during operation? Is it the vacuum created by the rotors? Is the coefficient of expansion using aluminum and Teflon causing binding? I would think vacuum would be greatest at idle then drop off as the hole gets bigger. The holes are teardrop shape on my slide. I believe I will have some puddling but my plenum is not over the exhaust but some distance away and lower than the ports. If the injectors are closer to the slide I see the potential for a leaking slide to ruin your day. If the injectors were placed next to the port and downstream from the slide would there still be a potential for puddling? Where should the air bleed be located? Downstream from the slide? Does it provide air at idle to balance the mixture? Do gaskets between the spacer and the side plates of the slide seal adequately? I have a heat shield that surrounds the headers and plan to duct air across the headers to keep temps down under the cowl. If puddling is not an issue if a metal plenum is used that may be a solution. I originally had this but the metal portion of the plenum got too big. I am also looking at moving the injectors between the ports and the slide. Appreciate any input. Joe Berki Limo EZ 13b P port --part1_1b4a.171978d8.3de62ec0_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
Lucas Slide Valve fuel injection is probably the only good thing Lucas= ever=20 produced. All metal. Many tiny roller bearings. Friction free. Uses 95 PSI = fuel=20 pressure. The injectors shoot right onto the slide. However, there are no f= uel=20 leaks from the system, so this is no problem. Idle under 1,000 RPM is=20 typical.  I should never have sold my last one. The idea is to gr= asp=20 that last 4 or 5 HP from a Formula One engine.
 
For airplanes it is an answer in search of a question. Years ago we ra= n a=20 factory Pport 12-A in the racer. The housings had been hopped up by Mandevi= lle=20 for later closing points. So the engine had very little low speed torque, b= ut=20 was drivable at low speed. The carb was a 48 IDF Weber. No balance tube was= =20 used. Idle was as low as you wanted it to be.
I would use two TBs with injectors after the butterflies.
Just my opinion. I could be completely wrong.
Lynn E. Hanover
 
From: jskmberki@windstream.net
Reply-to: flyrotary@lancaironline.netTo:=20 flyrotary@lancaironline.net
Sent: 11/27/2012 7:36:00 A.M. Eastern Stan= dard=20 Time
Subj: [FlyRotary] Fwd: P Port 101
 


Sent from my iPhone

Begin forwarded message:

From: "Berki, Joseph UTAS" <Joseph.Berki@utas.utc.com= >
Date:=20 November 27, 2012 7:30:28 AM EST
To: "jskmberki@windstream.net" = <jskmberki@windstream.net&g= t;
Subject:=20 P Port 101

Mark,

 

I am trying to evaluate what to do with the fuel s= ystem=20 including the slide throttle. Based on your experience in the real worl= d,=20 why does it bind during operation?  Is it the vacuum created by th= e=20 rotors?  Is the coefficient of expansion using aluminum and Teflon= =20 causing binding?  I would think vacuum would be greatest at idle t= hen=20 drop off as the hole gets bigger.  The holes are teardrop shape on= my=20 slide.

 

I believe I will have some puddling but my plenum = is not=20 over the exhaust but some distance away and lower than the ports. = If=20 the injectors are closer to the slide I see the potential for a leaking= =20 slide to ruin your day.  If the injectors were placed next to the = port=20 and downstream from the slide would there still be a potential for=20 puddling?

 

Where should the air bleed be located?  Downs= tream=20 from the slide?  Does it provide air at idle to balance the=20 mixture?

 

Do gaskets between the spacer and the side plates = of the=20 slide seal adequately?

 

I have a heat shield that surrounds the headers an= d plan=20 to duct air across the headers to keep temps down under the=20 cowl.

 

If puddling is not an issue if a metal plenum is u= sed=20 that may be a solution.  I originally had this but the metal porti= on of=20 the plenum got too big.

 

I am also looking at moving the injectors between = the=20 ports and the slide.  Appreciate any input.

 

Joe Berki

Limo EZ

13b P=20 port

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