X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 29 Oct 2007 07:48:03 -0400 Message-ID: X-Original-Return-Path: Received: from wind.imbris.com ([216.18.130.7] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTPS id 2437540 for lml@lancaironline.net; Mon, 29 Oct 2007 00:13:56 -0400 Received-SPF: none receiver=logan.com; client-ip=216.18.130.7; envelope-from=brent@regandesigns.com Received: from [192.168.1.100] (cbl-238-80.conceptcable.com [207.170.238.80] (may be forged)) (authenticated bits=0) by wind.imbris.com (8.12.11/8.12.11.S) with ESMTP id l9T4DCAN087242 for ; Sun, 28 Oct 2007 21:13:12 -0700 (PDT) (envelope-from brent@regandesigns.com) X-Original-Message-ID: <47255DD3.8040900@regandesigns.com> X-Original-Date: Sun, 28 Oct 2007 21:13:07 -0700 From: Brent Regan User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: Lancair IVP (TSIO550) True Airspeed at 25k Feet? Content-Type: multipart/alternative; boundary="------------000901060908050205000209" This is a multi-part message in MIME format. --------------000901060908050205000209 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit At FL240, 28", 2500 RPM and 20.5 GPH (rich) has the engine producing 75% power resulting in a 275 KTAS. If I push the power up to 100% (35", 2,700 RPM and 31 GPH) I'll be zipping along at just over 300 KTAS. I always keep the CHTs under 400F, the TITs under 1500F and the oil under 195F. The engine in my IV-P is a Lycoming TIO540 with 8.5:1. pistons. A C150 will do 300 Kts with enough of a tail wind, so what? Boasting about ground speed with tail wind is like telling people how tall you are while standing on a pile of books. Regards Brent Regan <> --------------000901060908050205000209 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit At FL240, 28", 2500 RPM and 20.5 GPH (rich) has the engine producing 75% power resulting in a 275 KTAS. If I push the power up to 100% (35", 2,700 RPM and 31 GPH) I'll be zipping along at just over 300 KTAS. I always keep the CHTs under 400F, the TITs under 1500F and the oil under 195F. The engine in my IV-P is a Lycoming TIO540 with 8.5:1. pistons.

A C150 will do 300 Kts with enough of a tail wind, so what? Boasting about ground speed with tail wind is like telling people how tall you are while standing on a pile of books.

Regards
Brent Regan

<<I noticed that Columbia Aircraft has formed a "300 Knot Club" for those flying the Columbia 400 at 25k feet lucky enough to find a 70 knot tail wind and take a photo of the ground speed on their GPS.>> --------------000901060908050205000209--