X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from vms040pub.verizon.net ([206.46.252.40] verified) by logan.com (CommuniGate Pro SMTP 5.0.3) with ESMTP id 869136 for flyrotary@lancaironline.net; Thu, 08 Dec 2005 21:46:09 -0500 Received: from [63.24.45.144] ([63.24.40.140]) by vms040.mailsrvcs.net (Sun Java System Messaging Server 6.2-4.02 (built Sep 9 2005)) with ESMTPA id <0IR700IXYMCK34M6@vms040.mailsrvcs.net> for flyrotary@lancaironline.net; Thu, 08 Dec 2005 20:46:01 -0600 (CST) Date: Thu, 08 Dec 2005 18:46:01 -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="============_-1078026125==_ma============" References: --============_-1078026125==_ma============ Content-Type: text/plain; charset="us-ascii" ; format="flowed" Yes still running the same jets, guess you know more about my plane than I do, I like that idea of having injection and a carb for a backup, with that setup I would not bother with the air ram as you can use the injection for high altitude. Ken >Ken; In a note you posted 04 Feb 04, you said to set up with 200 >main gas jets, 155 main air correction jets and F-7 emulsion tubes >and it should work fine. Are these the jets you are using >currently, or have you went with something else. When the manual >comes I'll take a look and see what I have. I have the photo you >posted of the ram air setup, looks quite simple. It looks like with >a set of high pressure pumps and electric fuel valve that I cam use >the Weber and, or the fuel injection on demand. I have the fuel >injection system and the plumbing is in for the fuel return to the >tank. Will start with the Weber as project must fly in spring. >Working on the wrong end of the time curve at 69. Thanks for the >info. From the farm, buried in snow. JohnD > >----- Original Message ----- >From: Ken Welter >To: Rotary motors in aircraft >Sent: Thursday, December 08, 2005 6:40 PM >Subject: [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 > > > > --============_-1078026125==_ma============ Content-Type: text/html; charset="us-ascii" [FlyRotary] Re: 48 Weber
  Yes still running the same jets, guess you know more about my plane than I do, I like that idea of having injection and a carb for a backup, with that setup I would not bother with the air ram as you can use the injection for high altitude.
  Ken




Ken;  In a note you posted 04 Feb 04, you said to set up with 200 main gas jets, 155 main air correction jets and F-7 emulsion tubes and it should work fine.  Are these the jets you are using currently, or have you went with something else.  When the  manual comes I'll take a look and see what I have.  I have the photo you posted of the ram air setup, looks quite simple.  It looks like with a set of high pressure pumps and electric fuel valve that I cam use the Weber and, or the fuel injection on demand.  I have the fuel injection system and the plumbing is in for the fuel return to the tank.  Will start with the Weber as project must fly in spring.  Working on the wrong end of the time curve at 69.  Thanks for the info.  From the farm,  buried in snow. JohnD
----- Original Message -----
From: Ken Welter
To: Rotary motors in aircraft
Sent: Thursday, December 08, 2005 6:40 PM
Subject: [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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