X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-da05.mx.aol.com ([205.188.105.147] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTP id 5410795 for flyrotary@lancaironline.net; Wed, 22 Feb 2012 18:43:35 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.105.147; envelope-from=Lehanover@aol.com Received: from mtaomg-ma05.r1000.mx.aol.com (mtaomg-ma05.r1000.mx.aol.com [172.29.41.12]) by imr-da05.mx.aol.com (8.14.1/8.14.1) with ESMTP id q1MNh0Um016000 for ; Wed, 22 Feb 2012 18:43:00 -0500 Received: from core-moe003c.r1000.mail.aol.com (core-moe003.r1000.mail.aol.com [172.29.188.73]) by mtaomg-ma05.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id 1AE4EE000082 for ; Wed, 22 Feb 2012 18:43:00 -0500 (EST) From: Lehanover@aol.com Message-ID: <469.5e30b653.3c76d782@aol.com> Date: Wed, 22 Feb 2012 18:42:59 -0500 (EST) Subject: Re: [FlyRotary] Re: Throttle Back Bobble To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_469.5e30b653.3c76d782_boundary" X-Mailer: AOL 9.6 sub 5004 X-Originating-IP: [97.96.76.144] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1329954180; bh=ZfXXlz6ih1tlm3sP6k6UW0o5c9b3A/nzILK4huDiA7I=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=tuZ7DUkL4P0DWZ47nD9dCb/LLrV6j7dfL93t4dx9HQDzydvn+lzoX1XZmBNCrq2tx 28dxwY55NsvEhO3+Pj7/OVmob9qGWsIP1EXiyUkCbonV2Ak0D1drEvESrV73VDK+5Z +1dB6pLXRtKubmBh1riO0WVwdDZyyglgEm5rTqlg= X-AOL-SCOLL-SCORE: 0:2:461248864:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d290c4f457d844e6f --part1_469.5e30b653.3c76d782_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Closed throttle at high revs makes a good fuel burn (idle mixture) unlikely. The effective compression ratio drops to near zero due to poor cylinder filling. Fuel molecules are very far apart. The stock Renesis maps up to 44 degree of advance in this situation. The mixture burns very slowly requiring the added advance (more time to burn). Popping and clicking is still burning mixture lighting charges in the headers (turbo?) from chambers that didn't light at all. (Misses). In racing engines we didn't use the OMP and only premixed synthetic 2 cycle oil. So I jetted the idle mix real rich to keep the lube going in high rev closed throttle moments. The sheets of fire out the tail pipe was a crowd pleaser as well as the explosions on gear changes. It didn't count against our 105 Db sound limit. Lynn E. Hanover In a message dated 2/22/2012 4:37:57 P.M. Eastern Standard Time, cbarber@texasattorney.net writes: I had the same issue. I cut the fuel and added a bunch of advance for high-rev/low-MP operations. Cleaned it right up. --part1_469.5e30b653.3c76d782_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Closed throttle at high revs makes a good fuel burn (idle mixture)=20 unlikely. The effective compression ratio drops to near zero due to poor=20 cylinder filling.

Fuel molecules are very far apart. The stock Renesis maps up to = 44=20 degree of advance in this situation. The mixture burns very slowly requirin= g the=20 added advance (more time to burn). Popping and clicking is still burning mi= xture=20 lighting charges in the headers (turbo?) from chambers that didn't light at= all.=20 (Misses).

In racing engines we didn't use the OMP and only premixed synthetic 2 = cycle=20 oil. So I jetted the idle mix real rich to keep the lube going in high rev= =20 closed throttle moments.

The sheets of fire out the tail pipe was a crowd pleaser as well as th= e=20 explosions on gear changes. It didn't count against our 105 Db sound= =20 limit.

Lynn E. Hanover

In a message dated 2/22/2012 4:37:57 P.M. Eastern Standard Time,=20 cbarber@texasattorney.net writes:

= I had=20 the same issue. I cut the fuel and added a bunch of advance for=20 high-rev/low-MP operations. Cleaned it right=20 up.

--part1_469.5e30b653.3c76d782_boundary--