X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 64 [XX] (25%) X-MAILER: mail headers not consistent with User Agent "Outlook" (25%) SPAMTRICK: obfuscated phone number (25%) SPAMTRICK: obfuscated phone number (25%) SPAMTRICK: obfuscated phone number Return-Path: Received: from fed1rmmtao105.cox.net ([68.230.241.41] verified) by logan.com (CommuniGate Pro SMTP 5.1.7) with ESMTP id 1907163 for flyrotary@lancaironline.net; Wed, 07 Mar 2007 10:45:59 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.41; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao105.cox.net (InterMail vM.7.05.02.00 201-2174-114-20060621) with ESMTP id <20070307154508.EOQC24587.fed1rmmtao105.cox.net@fed1rmimpo02.cox.net> for ; Wed, 7 Mar 2007 10:45:08 -0500 Received: from BigAl ([72.192.132.90]) by fed1rmimpo02.cox.net with bizsmtp id Xrl81W00W1xAn3c0000000; Wed, 07 Mar 2007 10:45:08 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: 20b vs. Renesis for Lancair ES? Date: Wed, 7 Mar 2007 07:45:13 -0800 Message-ID: <002001c760cf$98400e20$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0021_01C7608C.8A1CCE20" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0021_01C7608C.8A1CCE20 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 So we have a data point. 20B FWF w/o prop ~425# How much does a IO-360 weigh w/o prop, including fluids & radiators? When comparing weights for liquid cooled you need to include the coolant = and radiators, because the IO-360 needs neither. In both cases you = generally do not include the oil. My estimates are that the IO-360 on a comparable = FWF basis would be 40# less. But for the same power, you should compare to 265hp IO-540; which will be more than 425#. Keeping the 20B installation down to 425# required custom lightweight induction, exhaust, oil pan, etc. Al How much does a 12b weigh w/o prop, including turbo/supercharger, fluids = & radiators? Mike LaFleur (dithering between 13b & 20b) ----- Original Message ---- From: Al Gietzen To: Rotary motors in aircraft Sent: Tuesday, March 6, 2007 11:58:06 AM Subject: [FlyRotary] Re: 20b vs. Renesis for Lancair ES? Al G dynoed his 20B at 295 hp @ 6800 RPM if I remember correctly. (might have been 285) Al chime in if you see this. The 20B is 50% bigger. (or = 1/3 if you prefer) The engine simply doesn't have to be as highly stressed = to produce power. For the ES GET THE 20B. =20 You remember quite correctly; 290 @6800 (sea level, std day, and all = that). More important to me with 2.17 : 1 re-drive, it's about 265 hp at 6300 = (2900 at the prop), and 200 at an easy cruise rpm of 4800. That engine should = go many hours at those conditions. If you want more horses, go with 2.85:1 re-drive. All up FWF weight (w/o prop) is about 425# including coolant and = radiators. I have no first hand experience with the Renesis; but for an ES, I'd go = with the 20B. Al =20 ------=_NextPart_000_0021_01C7608C.8A1CCE20 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

So we have a data point.

20B FWF w/o prop ~425#

How much does a IO-360 weigh w/o prop, including fluids & = radiators?

When comparing weights for liquid cooled you need to include the coolant and radiators, because the IO-360 needs neither.  In both cases you = generally do not include the oil.  My estimates are that the IO-360 on a = comparable FWF basis would be 40# less.  But for the same power, you = should compare to 265hp IO-540; which will be more than 425#.

Keeping the 20B installation down to 425# required custom lightweight induction, = exhaust, oil pan, etc.

Al


How much does a 12b weigh w/o prop, including turbo/supercharger, fluids & radiators?

Mike LaFleur (dithering between 13b & 20b)

----- Original Message ----
From: Al Gietzen <ALVentures@cox.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tuesday, March 6, 2007 11:58:06 AM
Subject: [FlyRotary] Re: 20b vs. Renesis for Lancair ES?

Al G dynoed his 20B at 295 hp @ 6800 RPM if I = remember correctly. (might have been 285) Al chime in if you see this. The 20B is = 50% bigger. (or 1/3 if you prefer) The engine simply doesn't have to be as = highly stressed to produce power. For the ES GET THE 20B.

 

You remember quite correctly; 290 @6800 (sea level, std day, and all = that).  More important to me with 2.17 : 1 re-drive, it’s about 265 hp at = 6300 (2900 at the prop), and 200 at an easy cruise rpm of 4800. That engine = should go many hours at those conditions. If you want more horses, go with = 2.85:1 re-drive.

All up FWF weight (w/o prop) is about 425# including coolant and = radiators.

I have no first hand experience with the Renesis; but for an ES, I’d = go with the 20B.

Al

 

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