Return-Path: Sender: (Marvin Kaye) To: lml Date: Fri, 24 May 2002 18:35:50 -0400 Message-ID: X-Original-Return-Path: Received: from [198.207.223.228] (HELO babbler.bmc.com) by logan.com (CommuniGate Pro SMTP 4.0b1) with ESMTP id 1246705 for lml@lancaironline.net; Fri, 24 May 2002 09:52:03 -0400 Received: from localhost.localdomain (localhost [127.0.0.1]) by babbler.bmc.com (8.10.2/8.10.2) with ESMTP id g4ODtMo07168 for ; Fri, 24 May 2002 08:55:22 -0500 (CDT) Received: from pdavis.bmc.com (pdavis@localhost) by localhost.localdomain (8.11.6/8.11.2) with ESMTP id g4ODpFk20406 for ; Fri, 24 May 2002 08:51:19 -0500 X-Original-Message-Id: <200205241351.g4ODpFk20406@localhost.localdomain> X-Authentication-Warning: localhost.localdomain: pdavis owned process doing -bs X-Mailer: exmh version 2.4 06/23/2000 with nmh-1.0.4 Pgp-Action: PGP/MIME-signclear; rfc822=off; originator="Paul Davis " From: "Paul Davis" Reply-to: "Paul Davis" X-Original-To: lml@lancaironline.net Subject: Re: [LML] Vacuum v. all electric In-Reply-To: Your message of "Fri, 24 May 2002 06:40:41 CDT." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Original-Date: Fri, 24 May 2002 08:51:14 -0500 >>>>> On Fri, 24 May 2002, "danobrien" == danobrien@cox.net wrote: danobrien> I am interested in builders' opinions about having all danobrien> electric gyros instead of the more standard system with danobrien> vacuum driven heading and attitude indicators and an danobrien> electric turn coordinator. Way too early to commit, but my preference would be no vacuum because (you guessed it) vacuum sucks. I've talked with a few friends about doing this and the consensus seems to be dual alternators, dual batteries and (maybe) dual bus. I'm considering something like the Blue Mountain EFIS/One with either EFIS/Lite or traditional (but electric) steam gauge for backup. If I find it affordable I'd really like to put an EFIS in front of each seat. Assuming it's possible to fly by referencing the EFIS at the other station I wouldn't need additional backup (for the instruments). This would also grant the advantage of being able to fly solo from either seat (assuming I'm careful with switch locations). I'm still not happy about the idea of stick in left hand and throttle in right. Just seems wrong -- as does flying solo from the right seat (another way to allow flying with my right hand). Of course, two EFIS/One's would mean about $20,000 just for flight instruments. A cheaper alternative I'm considering is all electric steam gauge instruments (still more expensive than vacuum gyros) with backup alternator and battery. Still have the potential for partial panel. The whiteboard in my office has a schematic a friend (pilot and electronics type) sketched for providing automatic fail-over from the primary to backup alternator; that's about as far as it's gone. p.s. Have any other Legacy builders considered dual throttle quadrants so you can sit in the left seat and still have the throttle in you left hand? Or have you considered setting up your plane for solo from the right seat? It's just that every other stick controlled airplane I've flown let me fly with my right hand, and I like it that way -- especially for aerobatics and landings (and may the twain never meet). ------------------- Paul Davis pdavis@bmc.com Phone 713-918-1550 ------------------- Nullus est liber tam malus ut non aliqua parte prosit There is no book so bad that it is not profitable in some part