Mailing List flyrotary@lancaironline.net Message #28315
From: John Downing <downing.j@sbcglobal.net>
Subject: Re: [FlyRotary] Re: 48 Weber
Date: Thu, 8 Dec 2005 21:07:49 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
[FlyRotary] Re: 48 Weber
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
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
 
 

Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster