X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with ESMTP id 4194623 for flyrotary@lancaironline.net; Sat, 03 Apr 2010 17:32:33 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (mail.aanet.com.au [203.24.100.34]) by poplet2.per.eftel.com (Postfix) with ESMTP id 4D8FA1737B6 for ; Sun, 4 Apr 2010 05:31:57 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id A1185BEC025 for ; Sun, 4 Apr 2010 05:31:55 +0800 (WST) Message-ID: <3F2522D8A59A418584DDBDCFDB31D267@ownerf1fc517b8> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Weber chokes Date: Sun, 4 Apr 2010 07:31:57 +1000 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 100403-1, 04/03/2010), Outbound message X-Antivirus-Status: Clean Lynn or Bill, Having a quick look at the web sites, I see the choke does restrict flow and increase venturi effect, which is good for sucking up fuel from the float bowl. However without maintaining that restricted size, through to the combustion chamber, the flow returns to a slower flow. So I don't see a benefit for increased VE without the smaller sized manifold inlet tube ( matching the choke size) OR a reducing diameter manifold inlet tube (a style Lynn mentioned in an earlier post). Or am I wrong? George ( down under) > Lynn, > It is worth mention that on many Webers the "choke" is changeable on size. > Also many people don't understand thar choke means primary venturi, not a > starting restriction used on many big 4 barrel. carbs. I know this is > second nature to us, we grew up on this stuff. Many of our younger > contributors have never even worked on a carburetor. I used two 42 dcoe > Webers on motorcycle engines used om sports racers. We ran 38-42mm > venturis. > Bill Jepson > Sent from my Verizon Wireless BlackBerry > > -----Original Message----- > From: Lynn Hanover > Date: Sat, 3 Apr 2010 08:59:29 > To: Rotary motors in aircraft > Subject: [FlyRotary] Weber chokes > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html >