Return-Path: Received: from out010.verizon.net ([206.46.170.133] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2971877 for flyrotary@lancaironline.net; Mon, 02 Feb 2004 21:56:44 -0500 Received: from [67.225.117.132] ([67.225.117.83]) by out010.verizon.net (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP id <20040203025642.DJP26012.out010.verizon.net@[67.225.117.132]> for ; Mon, 2 Feb 2004 20:56:42 -0600 Mime-Version: 1.0 X-Sender: res0c5l1@incoming.verizon.net Message-Id: In-Reply-To: References: Date: Mon, 2 Feb 2004 18:58:41 -0800 To: "Rotary motors in aircraft" From: Ken Welter Subject: [FlyRotary] Re: Non-EFI fuel systems Content-Type: multipart/alternative; boundary="============_-1136345362==_ma============" X-Authentication-Info: Submitted using SMTP AUTH at out010.verizon.net from [67.225.117.83] at Mon, 2 Feb 2004 20:56:41 -0600 --============_-1136345362==_ma============ Content-Type: text/plain; charset="us-ascii" ; format="flowed" >Nice job on the intake manifold, Rusty. Thanks for the info >regarding the Ellison throttlebody. Did it have a provision for >leaning? (similar to a standard aircraft carb)? Thanks. Paul >Conner > >Thanks, and I'm sure you can imagine that you're seeing the best >side :-) I'll know if it actually fits in about an hour. > >As for the Ellison, yes, it has a mixture control. > >Sorry Ken, but I don't agree with your view of airflow on these >units. I think they're more than suitable for the average NA >13B. To get a 180 HP, doesn't it take a set amount of air, and >fuel? If so, why would we need so much more airflow than a Lycoming >O-360? > >Cheers, >Rusty (in search of argon) > > Sorry to say but I think you are dead wrong on the need for high airflow on the rotary and there is no way 350 CFM will work unless you want to fly a turd. You did a fine job making that high flow manifold and I bet you wont put a 350 CFM throttle body on it. I had 1000 hrs flying time on my old coot with a 51 Weber and when I rebuilt it I could not get another 51 as they are hard to come by so I went to a 48mm instead and there was a noticeable drop in power and I would switch back to a 51 if I weren't go to a turbo. For anyone thinking of a Weber I will say there are pros and cons between a 48 and a 51, the 51 puts out more power but it is temperamental on jetting and it runs rough on the bottom end compared to the 48, there is also a 55mm Weber but I have had no experience with it but would consider it. For the best deal on Weber carbs check out performance parts warehouse at http://www.webercarburetors.com Ken --============_-1136345362==_ma============ Content-Type: text/html; charset="us-ascii" [FlyRotary] Re: Non-EFI fuel systems
Nice job on the intake manifold, Rusty.    Thanks for the info regarding the Ellison throttlebody.   Did it have a provision for leaning?  (similar to a standard aircraft carb)?   Thanks.  Paul Conner 
 
Thanks, and I'm sure you can imagine that you're seeing the best side :-)   I'll know if it actually fits in about an hour.
 
As for the Ellison, yes, it has a mixture control. 
 
Sorry Ken, but I don't agree with your view of airflow on these units.  I think they're more than suitable for the average NA 13B.  To get a 180 HP, doesn't it take a set amount of air, and fuel?  If so, why would we need so much more airflow than a Lycoming O-360?
 
Cheers,
Rusty (in search of argon) 
 
 
  Sorry to say but I think you are dead wrong on the need for high airflow on the rotary and there is no way 350 CFM will work unless you want to fly a turd.    

 You did a fine job making that high flow manifold and I bet you wont put a 350 CFM throttle body on it.
 
 I had 1000 hrs flying time on my old coot with a 51 Weber and when I rebuilt it I could not get another 51 as they are hard to come by so I went to a 48mm instead and there was a noticeable drop in power and I would switch back to a 51 if I weren't go to a turbo.

 For anyone thinking of a Weber I will say there are pros and cons between a 48 and a 51, the 51 puts out more power but it is temperamental on jetting and it runs rough on the bottom end compared to the 48, there is also a 55mm Weber but I have had no experience with it but would consider it.

 For the best deal on Weber carbs check out performance parts warehouse at http://www.webercarburetors.com

 Ken
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