Return-Path: Received: from out3.mx.nwbl.wi.voyager.net ([169.207.3.121] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2971975 for flyrotary@lancaironline.net; Mon, 02 Feb 2004 22:44:08 -0500 Received: from mail0.mx.voyager.net (mail0.mx.voyager.net [216.93.66.205]) by out3.mx.nwbl.wi.voyager.net (Postfix) with ESMTP id 813B57736C for ; Mon, 2 Feb 2004 21:44:08 -0600 (CST) Received: from u036fr3za011 (d23.as0.wtma.wi.voyager.net [64.77.136.151]) by mail0.mx.voyager.net (8.12.9/8.10.2) with SMTP id i133i5qn029453 for ; Mon, 2 Feb 2004 22:44:06 -0500 (EST) Message-ID: <009101c3ea08$8383d980$3c40fea9@u036fr3za011> From: "Barnhart" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Non-EFI fuel systems Date: Mon, 2 Feb 2004 21:47:57 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_008E_01C3E9D6.38324E80" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 This is a multi-part message in MIME format. ------=_NextPart_000_008E_01C3E9D6.38324E80 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageIFRC the Ellison's are restricted to avgas and not supposed to = use auto fuel. Something about O'ring composition. My 327 with a 650 Holley was a perfect match, the 750 was just a little = to big. Barny MGDQ 20bt ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Monday, February 02, 2004 9:22 PM Subject: [FlyRotary] Re: Non-EFI fuel systems 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. =20 Fair enough. I can certainly agree, to disagree. I'm not sure which = Ellison you're referring to, with the 350 CFM number, but I would = absolutely bolt an EFS 4-5 to a NA 13B in a heartbeat. =20 You did a fine job making that high flow manifold and I bet you wont = put a 350 CFM throttle body on it.=20 TWM doesn't publish CFM ratings that I know of, but I got a TWM 3000, = with 55 mm bores. The ONLY reason I got that size was that it came with = dual fuel rails, and 4 injectors. I was really tired of not having = matching injectors. =20 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, This is really the classic hot rod carb theory. Put a 1050 Holley = double pumper on a chevy 350, and it will have the best possible WOT = power, but drivability will suffer, since it's too large to precisely = control the low throttle requirements. Put a 600 on it, and you'll lose = a tiny bit of high end, but gain throttle response everywhere else. =20 All that being said, I can't help but agree that we care more about = high end, than low and mid range throttle. Still, I think the Ellison = would make a fine choice, even if you get one of the "too big" sizes. =20 Rusty (my 4A084 won't have EFI or an Ellison) -------------------------------------------------------------------------= ----- This message scanned for viruses by Corecomm=20 ------=_NextPart_000_008E_01C3E9D6.38324E80 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
IFRC the Ellison's are restricted to = avgas and not=20 supposed to use auto fuel. Something about O'ring = composition.
 
My 327 with a 650 Holley was a perfect = match, the=20 750 was just a little to big.
 
Barny
MGDQ 20bt
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Monday, February 02, 2004 = 9:22=20 PM
Subject: [FlyRotary] Re: = Non-EFI fuel=20 systems

  Sorry to say but I think you are dead wrong on the need = for high=20 airflow on the rotary and there is no way 350 CFM will work unless you = want to=20 fly a turd.      
 
Fair=20 enough.  I can certainly agree, to disagree.  I'm not sure = which=20 Ellison you're referring to, with the 350 CFM number, but I would = absolutely=20 bolt an EFS 4-5 to a NA 13B in a heartbeat. =20  
 
You did a fine job making that high flow manifold and I bet you = wont put=20 a 350 CFM throttle body on it. 
 
TWM doesn't=20 publish CFM ratings that I know of, but I got a TWM 3000, with 55 mm=20 bores.  The ONLY reason I got that size was that it came with = dual fuel=20 rails, and 4 injectors.  I was really tired of not = having=20 matching injectors.   
 
 For anyone thinking of a Weber I will say there are pros = and cons=20 between a 48 and a 51, the 51 puts out more power but it is = temperamental on=20 jetting and it runs rough on the bottom end compared to the 48,

This is=20 really the classic hot rod carb theory.  Put a 1050 Holley double = pumper on a chevy 350, and it will have the best possible WOT = power, but=20 drivability will suffer, since it's too large to precisely = control the=20 low throttle requirements.  Put a 600 on it, and you'll lose a = tiny bit=20 of high end, but gain throttle response everywhere else. =20
 
All that=20 being said, I can't help but agree that we care more about high = end, than=20 low and mid range throttle.  Still, I think the Ellison would = make a fine=20 choice, even if you get one of the "too big" sizes.  =
 
Rusty (my=20 4A084 won't have EFI or an Ellison)
 
This message scanned = for viruses by=20 Corecomm=20
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