X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA13.emeryville.ca.mail.comcast.net ([76.96.27.243] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3674231 for flyrotary@lancaironline.net; Sat, 06 Jun 2009 20:23:53 -0400 Received-SPF: none receiver=logan.com; client-ip=76.96.27.243; envelope-from=gregw@onestopdesign.biz Received: from OMTA03.emeryville.ca.mail.comcast.net ([76.96.30.27]) by QMTA13.emeryville.ca.mail.comcast.net with comcast id 0m1V1c0050b6N64ADoPG2r; Sun, 07 Jun 2009 00:23:16 +0000 Received: from osd1 ([24.6.40.29]) by OMTA03.emeryville.ca.mail.comcast.net with comcast id 0oPG1c0010dkeQQ8PoPGPB; Sun, 07 Jun 2009 00:23:16 +0000 Message-ID: From: "Greg Ward" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Battery Isolation diodes Date: Sat, 6 Jun 2009 17:32:53 -0700 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Got them Ed, and thanks. One quick question. I went to an AOPA safety seminar, and they recommended a separate ground switch for the GPS, and related equipment, so that they could be programmed without the engine running, as that has been known to take some time, and your head is down with a prop running. Has anybody done this? Any diagrams? Greg Ward Lancair 20B N178RG in progress..... ----- Original Message ----- From: "Ed Anderson" To: "Rotary motors in aircraft" Sent: Saturday, June 06, 2009 2:27 PM Subject: [FlyRotary] Re: Battery Isolation diodes > Thanks for the suggestion, Ernest. Yes, my switch will stay in Alternator > position even with a diode - because even a diode can fail and I really > dislike repeating incidents due to the same cause {:>) > > Ed > > Ed Anderson > > Rv-6A N494BW Rotary Powered > > Matthews, NC > > eanderson@carolina.rr.com > > http://www.andersonee.com > > http://www.dmack.net/mazda/index.html > > http://www.flyrotary.com/ > > http://members.cox.net/rogersda/rotary/configs.htm#N494BW > > http://www.rotaryaviation.com/Rotorhead%20Truth.htm > > > -----Original Message----- > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On > Behalf Of Ernest Christley > Sent: Saturday, June 06, 2009 4:23 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Battery Isolation diodes > > Ed Anderson wrote: >> >> Thanks, Tracy >> >> I was unaware (never thought about it) of the association - perhaps >> not having an isolation diode is one reason I never had any "Noise >> Problem" with the EC2 {:>) >> >> Thanks for the information >> >> Ed >> > When wiring up the diode, it should be fairly simple to drop in a large > value mylar capacitor to conduct the noise. My experience with > electrolytics is that they can be poorly made and leak. The mylars would > be more robust in the environmental extremes of an airplane. > > In any case, I thought the diode was just for a backup. The switch would > stay in the same position it has always occupied, so noise would be > absorbed by the battery as it always has. The EC2 would have to be on > the battery side of the switch, which would make it even more noise > isolated when hidden behind the diode. > > -- > > http://www.ernest.isa-geek.org > > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > __________ Information from ESET NOD32 Antivirus, version of virus > signature > database 3267 (20080714) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > __________ Information from ESET NOD32 Antivirus, version of virus > signature > database 3267 (20080714) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html >