X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from web81011.mail.mud.yahoo.com ([68.142.199.91] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with SMTP id 2137888 for flyrotary@lancaironline.net; Sun, 24 Jun 2007 18:36:27 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.199.91; envelope-from=deltaflyer@prodigy.net Received: (qmail 54334 invoked by uid 60001); 24 Jun 2007 22:35:47 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=prodigy.net; h=X-YMail-OSG:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=PkDlpWM6NM3YnYHnxEJa+gb0b1LNKmqfh9p2v774NLCSHe1ISgUN5HcGTQHDa0yRreFT6MgH4V9jOohbfaExH7mD33oYPeCqgMTmToiNdGgD8b41aO/3At+cv4YDRjzUvQIPL2FCVmLxAIQYwIF2c4MbJRcZQQsMdX40XBYQEVk=; X-YMail-OSG: G2.q.QMVM1nEyk0x4GQM_9f3Bymj1VVRFV1G6Ba.VzKSTf2B5W74oqeq2b9ngipcPsae.DjuXWaiClae0daSRgLNEz.ONpSjSphsV9KUb9iqEmg- Received: from [12.76.152.20] by web81011.mail.mud.yahoo.com via HTTP; Sun, 24 Jun 2007 15:35:47 PDT Date: Sun, 24 Jun 2007 15:35:47 -0700 (PDT) From: James Maher Subject: Re: [FlyRotary] Wt & Bal Question To: Rotary motors in aircraft In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-871487844-1182724547=:54308" Content-Transfer-Encoding: 8bit Message-ID: <929842.54308.qm@web81011.mail.mud.yahoo.com> --0-871487844-1182724547=:54308 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Bill, First, if your radio weighs 10 lbs then you should consider getting another radio. :o) Perhaps you were just throwing out a hypothetical weight. I have a ICOM A200 and it only weighs 2.4 lbs. If you have the manual for your radio it should list the weight and have a diagram that indicates exactly where the Cof G is for the radio. You can then use this to calculate where the weight will be when installed in the aircraft. Jim Bill Bradburry wrote: I am going to weigh my plane soon and do not have all the radios installed yet so I will need to calculate their addition. Where does the weight show up? At the FS of the panel, or at the center of mass of the radio? Say you had a 10 inch long, 10 lb radio and it was installed in a panel at FS 90. Will the weight show up at FS 90 or at FS 85? (assuming that the mass is evenly distributed along the length of the radio) Don't worry, I will weigh it again before I fly. This is for planning purposes only. I am concerned that I need to move my batteries. Thanks to all you math whizzes out there..:>) Bill B -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html --0-871487844-1182724547=:54308 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit
Bill,
First, if your radio weighs 10 lbs then you should consider getting another radio. :o)
Perhaps you were just throwing out a hypothetical weight.
I have a ICOM A200 and it only weighs 2.4 lbs.
If you have the manual for your radio it should list the weight and have a diagram that indicates exactly where the Cof G is for the radio.
You can then use this to calculate where the weight will be when installed in the aircraft.
Jim

Bill Bradburry <bbradburry@allvantage.com> wrote:
I am going to weigh my plane soon and do not have all the radios
installed yet so I will need to calculate their addition.
Where does the weight show up? At the FS of the panel, or at the center
of mass of the radio?

Say you had a 10 inch long, 10 lb radio and it was installed in a panel
at FS 90. Will the weight show up at FS 90 or at FS 85? (assuming that
the mass is evenly distributed along the length of the radio)

Don't worry, I will weigh it again before I fly. This is for planning
purposes only. I am concerned that I need to move my batteries.

Thanks to all you math whizzes out there..:>)

Bill B

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