X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 13 Mar 2011 17:39:46 -0400 Message-ID: X-Original-Return-Path: Received: from [66.70.126.15] (HELO omta0113.mta.everyone.net) by logan.com (CommuniGate Pro SMTP 5.4c2) with ESMTP id 4904337 for lml@lancaironline.net; Sat, 12 Mar 2011 12:26:17 -0500 Received-SPF: none receiver=logan.com; client-ip=66.70.126.15; envelope-from=bknotts@buckeye-express.com Received: from sj1-dm103.mta.everyone.net (bigip-ext [172.16.0.1]) by omta0113.mta.everyone.net (Postfix) with ESMTP id C5F4917503E0 for ; Sat, 12 Mar 2011 09:25:40 -0800 (PST) X-Eon-Dm: sj1-dm103 Received: by sj1-dm103.mta.everyone.net (EON-AUTHRELAY2 - 48f07e90) id sj1-dm103.4d75101f.173a0c for ; Sat, 12 Mar 2011 09:25:40 -0800 X-Eon-Sig: AQK8DXBNe6yUllHYJQIAAAAB,e1f61a633879cd0732e374da3773e164 X-Original-Message-ID: <4D7BACA2.5060107@buckeye-express.com> X-Original-Date: Sat, 12 Mar 2011 12:25:54 -0500 From: "F. Barry Knotts" Reply-To: bknotts884@earthlink.net User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9 MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: [LML] Re: Reality check References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------040704090008000905020403" X-Antivirus: avast! (VPS 110312-0, 03/12/2011), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. --------------040704090008000905020403 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit A factoid that I picked up somewhere is that the gear retraction in a IVP shifts 69 lbs. aft 16" or increases MW by 1104 lb-in. Does anyone have verification of this? Barry Knotts On 3/11/2011 10:25 AM, Bill Wade wrote: > Hi Bob- some other thoughts- > As I moved the mains in > and out, checking wheel well clearances, I started thinking about how > retracting those suckers might affect CG. A lot of weight on long > arms, moved aft. The nose gear as well, perhaps to a lesser extent. > When I do the W&B I may try to measure both extended and retracted > conditions (with suitable safeguards). In the event of a spin do you > suppose extending the gear might help recovery? > Speaking of which- did you install stall strips? > I like your idea of the spacers and I'll install some when the time > comes- I'll also move the power pack. As you say, a little weight in > the rear could compensate if needed. > If there's not much difference between the two styles I may use the > 0/90 for the baggage floor. I cut the gear area bulkhead from > the +/-45, and that leaves enough length to cut the RH armrest. Pete > Sinclair (ES-P) told me to reinforce that with 6 BID top and bottom > (if I understood correctly) to reduce ballooning of the fuselage when > pressurized. Did you do that? -Bill --------------040704090008000905020403 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit A factoid that I picked up somewhere is that the gear retraction in a IVP shifts 69 lbs. aft 16" or increases MW by 1104 lb-in. Does anyone have verification of this?

Barry Knotts

On 3/11/2011 10:25 AM, Bill Wade wrote:

Hi Bob- some other thoughts-

As I moved the mains in and out, checking wheel well clearances, I started thinking about how retracting those suckers might affect CG. A lot of weight on long arms, moved aft. The nose gear as well, perhaps to a lesser extent. When I do the W&B I may try to measure both extended and retracted conditions (with suitable safeguards). In the event of a spin do you suppose extending the gear might help recovery?

Speaking of which- did you install stall strips?

I like your idea of the spacers and I'll install some when the time comes- I'll also move the power pack. As you say, a little weight in the rear could compensate if needed.

If there's not much difference between the two styles I may use the 0/90 for the baggage floor. I cut the gear area bulkhead from the +/-45, and that leaves enough length to cut the RH armrest. Pete Sinclair (ES-P) told me to reinforce that with 6 BID top and bottom (if I understood correctly) to reduce ballooning of the fuselage when pressurized. Did you do that? -Bill

--------------040704090008000905020403--