X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 26 Mar 2007 00:45:07 -0400 Message-ID: X-Original-Return-Path: Received: from vms040pub.verizon.net ([206.46.252.40] verified) by logan.com (CommuniGate Pro SMTP 5.1.7) with ESMTP id 1942921 for lml@lancaironline.net; Mon, 26 Mar 2007 00:15:33 -0400 Received: from wbs ([71.177.5.156]) by vms040.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JFH008O3T5RAOF1@vms040.mailsrvcs.net> for lml@lancaironline.net; Sun, 25 Mar 2007 23:15:28 -0500 (CDT) X-Original-Date: Sun, 25 Mar 2007 21:14:27 -0700 From: "Skip Slater" Subject: Re: [LML] Re: Re Batteries X-Original-To: "Lancair Mailing List" X-Original-Message-id: <001901c76f5d$5e653080$0a01a8c0@wbs> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Mailer: Microsoft Outlook Express 6.00.2900.3028 Content-type: multipart/alternative; boundary="----=_NextPart_000_0008_01C76F22.9221D350" X-Priority: 3 X-MSMail-priority: Normal References: This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C76F22.9221D350 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Rick, For what it's worth, I have my battery (I only have one, so it's big) = on the firewall and I have a Lycoming IO-540 on my plane, which I = believe is heavier than an IO-550. I also have a metal Hartzell prop = and a pre-oiler (~10 lbs) mounted to the firewall. We wanted to try a = forward battery for all the reasons Brent mentioned and made provisions = to move it back if it became necessary. Other than putting oxygen and = halon bottles as far back as I could, I didn't do anything special to = balance my plane. When we put it on the scales, it penciled out fine. = With just me in it and a light fuel load, I'm right at forward CG. = Anything I add in the way of pax, fuel or especially baggage helps move = me more into the envelope. To give myself a pad, I usually carry a = small tool bag under the floor in the baggage area that probably weighs = around 20 lbs. I normally land with full flaps and full nose up trim. I approach at = 80 knots, slow to 75 crossing the fence and touch down around 70 and the = plane handles fine.=20 The point is you may be able to mount at least one battery up forward = without unbalancing yourself. If you happen to plan on a composite prop = too, you should have no problem with your CG. Skip Slater ------=_NextPart_000_0008_01C76F22.9221D350 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Rick,

For what it's worth, I = have my battery=20 (I only have one, so it's big) on the firewall and I have = a=20 Lycoming IO-540 on my plane, which I believe is heavier than an = IO-550. I=20 also have a metal Hartzell prop and a pre-oiler (~10 lbs) mounted to the = firewall. We wanted to try a forward battery for all the = reasons=20 Brent mentioned and made provisions to move it back if it = became=20 necessary. Other than putting oxygen and halon bottles = as far=20 back as I could, I didn't do anything special to balance my plane. = When we put it on the scales, it penciled out fine. With just = me in=20 it and a light fuel load, I'm right at forward CG. Anything I add = in the=20 way of pax, fuel or especially baggage helps move me more into the=20 envelope. To give myself a pad, I usually carry a small tool bag = under the=20 floor in the baggage area that probably weighs around 20 = lbs.

I normally land with full = flaps and=20 full nose up trim. I approach at 80 knots, slow to 75 = crossing the=20 fence and touch down around 70 and the plane handles = fine.

The point is you may be = able to mount=20 at least one battery up forward without unbalancing yourself. If = you=20 happen to plan on a composite prop too, you should have no problem with = your=20 CG.

Skip Slater

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