X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=L5hfeKb8 c=1 sm=1 tr=0 a=XVaprR+9DopW6IhmWnI0hg==:117 a=v2DPQv5-lfwA:10 a=eRLigfuSAAAA:8 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=Lv0DCXpSDLn4g_xPis8A:9 a=QEXdDO2ut3YA:10 a=LFOzvnlWngRJFNcjqFEA:9 a=oLo-xsHJLktzzrKz:21 a=BfhXYjFvZD4iae-mNffo:22 a=Urk15JJjZg1Xo0ryW_k8:22 From: "Andrew Martin andrew@martinag.com.au" Received: from mail-qt0-f171.google.com ([209.85.216.171] verified) by logan.com (CommuniGate Pro SMTP 6.2.2) with ESMTPS id 10880166 for flyrotary@lancaironline.net; Tue, 27 Mar 2018 22:54:25 -0400 Received-SPF: none receiver=logan.com; client-ip=209.85.216.171; envelope-from=andrew@martinag.com.au Received: by mail-qt0-f171.google.com with SMTP id w12so1084359qti.4 for ; Tue, 27 Mar 2018 19:54:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=martinag-com-au.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=NkiPP1+o56WMyLgfQPO+nHxUtftrpfsnlavjMVxVImg=; b=zzZnBdPSAR+Q8YwmoVs+yAB0589aFgdiJy0Ab86jANiFghuRoMN6SFr48SsvMVWBuC XSMiI59mj2nm4QcA9ODqmS1TpQRVA67Wiscma+qAjNIjNwuPSH9daCVaZqRxosNkjhJ6 K6BqP8v5WRgHFTZ8ZeyshI0M3qjMcjcTES9uuJ377cgdtC4f4QOKzthwn+FTL05ptJF7 R9EkkSzBHSdOMwQopa0lpJqFhP2Jx2Ul9qXxfyWtB8cpRXQfpCACPtFwtrlIxJfVlESZ ip60exxDmLuttf7nGt6lDT29yE/ZEcxTxNUP32XqfDuqkTzhlHq/2LQUpEiIPZbklV41 e46Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=NkiPP1+o56WMyLgfQPO+nHxUtftrpfsnlavjMVxVImg=; b=WLevXFJll0OSi+M0Ksmvu9yfXmsNJQacMJ/4/QYUqA0QT757nwuVwhY7fM/bCTAXV5 yPsLNhd6UsJOXKLKxptqNvTYqXb9l37rFV52TdK/n2z8az9uxdoSLDeHhScHS4EZHLW3 v26whRi6+QRuUF7MnkuEhZQOpm6UBkvpL3o76+HhWkTRarqlTcKjkxBVAEXL6NNA66kC anJGMEXBEXngeqXAVUqRQL0Zyl77eR1erKXV70+ZvzNhiTlY2HSW/8h0A7rOWF0LqIsK HxipWXaXJfUXpo6Q9NsNIKWPEGQXF+/t4EuHqy4vQNNfbYtREhUE8TR9Vw+4dTLo4MUm UcOg== X-Gm-Message-State: ALQs6tCycuPp8WxzQJ+4PTGchJX+XvzowX/AkUXHhTWaI/zKHpRvFU/W xtcHyFXHzp+sIP8VT2ItsZNP5TBqecmrPm3bSfrT X-Google-Smtp-Source: AIpwx49vBzUnwnv7jTGyVnKAsNN+cSgcS8l7YrsuCZxKhQsDvkEKOz2TqQRVlde28J3och1J5kG92Qf7a2UueXWyRT0= X-Received: by 10.237.59.99 with SMTP id q32mr2807866qte.222.1522205649104; Tue, 27 Mar 2018 19:54:09 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Wed, 28 Mar 2018 02:53:58 +0000 Message-ID: Subject: Re: [FlyRotary] back-up power for EC2 To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="94eb2c0e5e54fd89e50568701e09" --94eb2c0e5e54fd89e50568701e09 Content-Type: text/plain; charset="UTF-8" Todd, a diode bridge in between allows 2 separate power feeds and keeps them isolated. Andrew On Wed, 28 Mar 2018 at 10:50 am, Andrew Martin wrote: > > On Wed, 28 Mar 2018 at 10:46 am, Todd Bartrim bartrim@gmail.com < > flyrotary@lancaironline.net> wrote: > >> Has anyone provided redundant power sources for their EC2? >> Currently I have power supplied via a circuit breaker, but I'm >> considering adding another power supply wire fed with a fuse. >> However they would both still feed through pins 33 & 34 which are >> internally connected. So even if I was to separate these pins for there own >> feed (they are currently fed from the same wire), a short on either one >> would likely cause both the fuse and CB to blow. >> I'm just trying to take care of a last few things on my list before >> taking this plane up to the airport and something I'd added to the list >> many years ago was redundant power for the EC2 since a failure of that >> could really ruin my day. >> Since the most likely point of failure (even though it's quite >> unlikely) would be the DB37 pin connector on the EC2, I'm not sure that it >> is worth the effort to open up the connector shell to add another power >> wire. >> I've changed my mind on this several times over the last while and now >> I'm running low on time so I'd throw it out for the collective wisdom of >> the group. >> >> Todd Bartrim (can't think of anything witty to sign off with) (I still >> miss Rusty's witt, for those that remember him) >> >> C-FSTB >> RV9 Turbo13B >> > -- -- Regards Andrew Martin Martin Ag --94eb2c0e5e54fd89e50568701e09 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Todd, a diode bridge in between allows 2 separate po= wer feeds and keeps them isolated.
Andrew

<= div class=3D"gmail_quote">
On Wed, 28 Mar 2018 at 10:50 am, Andrew Mart= in <andrew@martinag.com.au= > wrote:

On Wed, 28 Mar 2018 at 10:46 am, Todd Bartrim bartrim@gmail.com <flyrotary@lanca= ironline.net> wrote:
Ha= s anyone provided redundant power sources for their EC2?
=C2=A0 Current= ly I have power supplied via a circuit breaker, but I'm considering add= ing another power supply wire fed with a fuse.
However they would= both still feed through pins 33 & 34 which are internally connected. S= o even if I was to separate these pins for there own feed (they are current= ly fed from the same wire), a short on either one would likely cause both t= he fuse and CB to blow.=C2=A0
=C2=A0 =C2=A0I'm just trying to= take care of a last few things on my list before taking this plane up to t= he airport and something I'd added to the list many years ago was redun= dant power for the EC2 since a failure of that could really ruin my day.
=C2=A0 =C2=A0 Since the most likely point of failure (even though i= t's quite unlikely) would be the DB37 pin connector on the EC2, I'm= not sure that it is worth the effort to open up the connector shell to add= another power wire.
=C2=A0 I've changed my mind on this seve= ral times over the last while and now I'm running low on time so I'= d throw it out for the collective wisdom of the group.

=
Todd Bartrim=C2=A0 =C2=A0 (= can't think of anything witty to sign off with) (I still miss Rusty'= ;s witt, for those that remember him)

C-FSTB
=
RV9 Turbo13B
--=C2=A0
--
Regar= ds Andrew Martin Martin Ag
--94eb2c0e5e54fd89e50568701e09--