X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 64 [XX] (50%) RECEIVED: IP not found on home country list (25%) HTML: title tag is empty (25%) BODY: content type is strictly "text/html" Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 02 Mar 2007 10:00:03 -0500 Message-ID: X-Original-Return-Path: Received: from [64.97.157.134] (HELO n007.sc1.he.tucows.com) by logan.com (CommuniGate Pro SMTP 5.1.7) with ESMTP id 1878247 for lml@lancaironline.net; Fri, 02 Mar 2007 07:09:29 -0500 Received-SPF: none receiver=logan.com; client-ip=64.97.157.134; envelope-from=micah@froese.com Received: from [192.168.1.100] (71.31.88.223) by n007.sc1.he.tucows.com (7.2.069.1) (authenticated as micah@froese.com) id 45B8E5A00081D076 for lml@lancaironline.net; Fri, 2 Mar 2007 12:08:33 +0000 X-Original-Message-ID: <45E813C2.60901@froese.com> X-Original-Date: Fri, 02 Mar 2007 07:08:34 -0500 From: Micah Froese User-Agent: Mozilla Thunderbird 1.0.2 (Windows/20050317) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: [LML] Engine Dyno References: In-Reply-To: Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit I have "one of those engines" 10:1 , and electronic ignition on one side. 370 HP is claimed at 2800 rpm, though I don't personally run that high.

I could not be happier with my engine. Compared to the factory Legacy, which I have 6.6 hours of HPAT training in, my bird has a serious overall performance advantage, and burns less fuel.

Recently I took a neighbor with me on a flight, to test climb ability; our TO weight was 2356 lbs., at 21,000 feet we were still climbing at 120 KIAS, 500 fpm! Don't think a stock IO-550N could do that.

It would be interesting to know what a stock IO-550N would dyno.

Micah Froese
Lancair Legacy
85 hours

Douglas Brunner wrote:

Now for another controversial topic - engines...

I just watched my engine get dyno tested. It is a normally aspirated IO-550N EXP with 10:1
compression and magnetos. It made 325 hp at 2700 RPM.

There is an engine builder in California that claims 370 hp. I have a question for those who have this engine:

   - Are you sure you are getting 370 hp?
   - Have you seen the dyno test?
   - Do the recent Reno race results support the claim?