Return-Path: Received: from imo-d06.mx.aol.com ([205.188.157.38] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 721340 for flyrotary@lancaironline.net; Wed, 09 Feb 2005 00:53:32 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.157.38; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-d06.mx.aol.com (mail_out_v37_r3.8.) id q.9b.58c36526 (25098) for ; Wed, 9 Feb 2005 00:51:59 -0500 (EST) From: WRJJRS@aol.com Message-ID: <9b.58c36526.2f3afefe@aol.com> Date: Wed, 9 Feb 2005 00:51:58 EST Subject: Air volume and Throttle Bodies To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1107928318" X-Mailer: 9.0 SE for Windows sub 5005 -------------------------------1107928318 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Group, I have read with some trepidation the comments about using an Eliason Throttle body carburator replacer. I won't elevate it to injection because it isn't. This type of fuel system can and does suffer all the malidies of carburators. Icing, difficult transition tuning, and in our case LOW POWER OUTPUT. Unless you can run 2 or 3 of these things, which is moderately insane, you will drastically reduce your power. The Throttle body works fairly well on a Lyc because it is DESIGNED TO BE CARB LIMITED. Slow turning large displacement and high vacuum signal. How does our favorite little engine put out the same power as one that is twice it's displacement? It processes a lot of Air and Fuel. Just as much as the Lycoming! We must do that in shorter cycles (higher RPM) and need better airflow, hence large volume carbs, more of them, or multiport fuel injection with a BIG F---ing Butterfly. Please everybody learn your system, and tune carefully. Trying to force your rotary to breathe thru the same system as a Lycoming is like trying to run your Throughbred horse with hobbles on. It will move but not very well. Bill Jepson -------------------------------1107928318 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
Group,
 I have read with some trepidation the comments about using an Eli= ason=20 Throttle body carburator replacer. I won't elevate it to injection because i= t=20 isn't. This type of fuel system can and does suffer all the malidies of=20 carburators. Icing, difficult transition tuning, and in our case LOW POWER=20 OUTPUT. Unless you can run 2 or 3 of these things, which is moderately=20 insane, you will drastically reduce your power. The Throttle body works fair= ly=20 well on a Lyc because it is DESIGNED TO BE CARB LIMITED. Slow turning large=20 displacement and high vacuum signal. How does our favorite little engine put= out=20 the same power as one that is twice it's displacement? It processes a lot of= Air=20 and Fuel. Just as much as the Lycoming! We must do that in shorter cycles=20 (higher RPM) and need better airflow, hence large volume carbs, more of= =20 them, or multiport fuel injection with a BIG F---ing Butterfly. Please every= body=20 learn your system, and tune carefully. Trying to force your rotary to breath= e=20 thru the same system as a Lycoming is like trying to run your Throughbred ho= rse=20 with hobbles on. It will move but not very well.
Bill Jepson
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