X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from vms048pub.verizon.net ([206.46.252.48] verified) by logan.com (CommuniGate Pro SMTP 5.0.3) with ESMTP id 868911 for flyrotary@lancaironline.net; Thu, 08 Dec 2005 18:41:46 -0500 Received: from [63.24.45.144] ([70.203.61.237]) by vms048.mailsrvcs.net (Sun Java System Messaging Server 6.2-4.02 (built Sep 9 2005)) with ESMTPA id <0IR7005EQDTH2SG2@vms048.mailsrvcs.net> for flyrotary@lancaironline.net; Thu, 08 Dec 2005 17:41:46 -0600 (CST) Date: Thu, 08 Dec 2005 15:40:03 -0800 From: Ken Welter Subject: [FlyRotary] Re: 48 Weber In-reply-to: To: "Rotary motors in aircraft" Message-id: MIME-version: 1.0 Content-type: multipart/alternative; boundary="============_-1078037181==_ma============" References: --============_-1078037181==_ma============ Content-Type: text/plain; charset="us-ascii" ; format="flowed" That was probably me, its not a choke its an air ram that increases the air pressure in the Venturi in comparison to the float bole so the Venturi draws less fuel through the main jets, when I get by the airport tomorrow I will shoot a photo of it and also get the jet numbers I am running. Ken >Hi Lynn, >I read some time back where a builder jetted a DCOE to run with the >choke on at sea level and used it to lean out the mixture at >altitude by backing off the choke. Do you have any knowledge of >this, or other methods of variable mixture control for Weber carbs >in aircraft? >Thanks for your comments, Dave McC > >On 8, Dec , at 10:49 AM, Lehanover@aol.com wrote: >> >>There are many Weber books that show all you need. I have been >>using one since 1980, if you have any problems. >> >>Lynn E. Hanover >> >> --============_-1078037181==_ma============ Content-Type: text/html; charset="us-ascii" [FlyRotary] Re: 48 Weber
   That was probably me, its not a choke its an air ram that increases the air pressure in the Venturi in comparison to the float bole so the Venturi draws less fuel through the main jets, when I get by the airport tomorrow I will shoot a photo of it and also get the jet numbers I am running.
  Ken




Hi Lynn,
I read some time back where a builder jetted a DCOE to run with the choke on at sea level and used it to lean out the mixture at altitude by backing off the choke. Do you have any knowledge of this, or other methods of variable mixture control for Weber carbs in aircraft?
Thanks for your comments, Dave McC

On 8, Dec , at 10:49 AM, Lehanover@aol.com wrote:

There are many Weber books that show all you need. I have been using one since 1980, if you have any problems. 
 
Lynn E. Hanover
 
 

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