X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-qc0-f180.google.com ([209.85.216.180] verified) by logan.com (CommuniGate Pro SMTP 6.0c3) with ESMTPS id 5929507 for flyrotary@lancaironline.net; Sat, 08 Dec 2012 10:56:47 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.216.180; envelope-from=rwstracy@gmail.com Received: by mail-qc0-f180.google.com with SMTP id v28so760692qcm.25 for ; Sat, 08 Dec 2012 07:56:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=CycOIbexiRaAhWyvXfVlgS/bMpQ3aKSEF2+NGz1qY+I=; b=URvEtkegBR6g5b3h+UeAN348IIecEZlYT8XDmZ4qNwnDj+xzXDL1DgReWc5lERHWeL UDjmqbLwH6/Lqp3G3U/QEA7qTd3ntIROnBQYio5PfT7iszbuMBa42CGsCsQVIE6K7S60 OJZI2RhEweDDlSRwl+Y3WbTh/HCSieJwYiSlwA5wL2XcSphy1bW2gGb8FLxFLgRDGjr/ 5RgXC9YzbXJzXbf5Ksqnk+pMv8l0bLOuSjR8h3jKhujmi/hAVN3dozrZt0cAtT7pjAMb J5cuGacfmZZzYNuSbf2x2lPTI70noybefKUsRj/WVhzDFRsGfMdnhz/WjXi0E3FFDIxP Hgow== MIME-Version: 1.0 Received: by 10.49.60.33 with SMTP id e1mr18680395qer.4.1354982171355; Sat, 08 Dec 2012 07:56:11 -0800 (PST) Received: by 10.49.39.131 with HTTP; Sat, 8 Dec 2012 07:56:11 -0800 (PST) In-Reply-To: References: Date: Sat, 8 Dec 2012 10:56:11 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Aeroquip hose From: Tracy To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=047d7b6d9cee002b3704d0595f7c --047d7b6d9cee002b3704d0595f7c Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Tying the engine parts together should not be necessary but you still need a separate ground from battery to airframe ground (if metal) and your avionics ground point. Also separate feeds from +12 battery to starter/alternator and avionics. You can Use the starter/alternator feed for coils, injectors & fuel pumps to keep noise down on the avionics bus. Tracy On Sat, Dec 8, 2012 at 12:23 AM, Bill Bradburry w= rote: > ** ** ** > > Several months ago, after a discussion with ****Tracy****, I ran > grounding straps from each battery to the PSRU plate on both sides of the > starter mount. I had previously had the grounding strap running between > the center iron and the =93forest of tabs=94 grounding block on the firew= all. > ****Tracy**** suggested I move it so the starter amps would not get into > the grounding block.**** > > Now I have the igniters grounded on the center iron and I am considering > running a ground strap from the center iron to the batteries or trying to > tie each section of the engine =93sandwich=94 together by running a wire > between them. This would to be certain that the ground is good on the > igniters.**** > > ** ** > > Any opinions on this??**** > > ** ** > > Bill B**** > > ** ** > ------------------------------ > > *From:* **Rotary motors in aircraft** [mailto:flyrotary@lancaironline.net= ] > *On Behalf Of *Andrew Martin > *Sent:* Friday, December 07, 2012 8:29 PM > *To:* **Rotary motors in aircraft** > *Subject:* [FlyRotary] Re: Aeroquip hose**** > > ** ** > > Bill > > As Mark says + make sure you have a ground cable/strap connected battery > direct to your starter. Do not expect starter to ground through your engi= ne > without problems. > I remember ****Tracy**** posting on this issue years ago just a bit hard > to find in the archives now. > > Andrew**** > > ** ** > > On Sat, Dec 8, 2012 at 7:26 AM, Mark Steitle wrote:*= * > ** > > Bill, **** > > ** ** > > You may want to check your engine ground. Starter current may be causing > this.**** > > ** ** > > Mark S. **** > > ** ** > > **** > > On Fri, Dec 7, 2012 at 5:12 PM, **Bill Bradburry **< > bbradburry@bellsouth.net> wrote:**** > > I am working on cleaning up my ground system and I noticed that I have > several, 3 or 4, places on my SS braided fuel hose that appears to be bur= nt > like it had an electrical spark exit from it. I have not found anything = in > the vicinity of these places that look like where the spark? would have > jumped?? > > Has anyone seen something like this and what should I do about it? Do I > have a ground problem in the engine compartment or is this maybe static? > The hoses are covered by SS and are connected on one end to a filter that > has a ground strap on it and on the other end to the fuel rail which is > grounded to the engine. > > Bill B > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html**** > > ** ** > > ** ** > --047d7b6d9cee002b3704d0595f7c Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Tying the engine parts together should not be necessary but you still need = a separate ground from battery to airframe ground (if metal) and your avion= ics ground point.=A0=A0 Also separate feeds from +12 battery to starter/alt= ernator and avionics.=A0 You can Use the starter/alternator feed for coils,= injectors & fuel pumps to keep noise down on the avionics bus.

Tracy

On Sat, Dec 8, 2012 at 12:23 A= M, Bill Bradburry <bbradburry@bellsouth.net> wrote:

Several months ago, after a d= iscussion with Tracy, I ran grounding straps from each battery to the PSRU plate on both sides of the starter mount.=A0 I had previously had the grounding strap running between the center iron and the =93forest of tabs=94 grounding block on the firewal= l.=A0 Tracy suggested I move it so the starter amps would not get into the grounding block.

Now I have the igniters groun= ded on the center iron and I am considering running a ground strap from the center iro= n to the batteries or trying to tie each section of the engine =93sandwich=94 together by running a wire between them.=A0 This would to be certain that the ground is good on the igniters.

=A0

Any opinions on this??=

=A0

Bill B

=A0

From: Rot= ary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Andrew Martin
Sent: Friday, December 07, 2= 012 8:29 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Aer= oquip hose

=A0

Bill

As Mark says + make sure you have a ground cable/strap connected battery di= rect to your starter. Do not expect starter to ground through your engine withou= t problems.
I remember Tracy posting on this issue years ago just a bit hard to find in the archives now= .

Andrew

=A0

On Sat, Dec 8, 2012 at 7:26 AM, Mark Steitle <msteitle@gmail.com= > wrote:

Bill,=A0

=A0

You may want to check your engine ground. =A0Starter= current may be causing this.

=A0

Mark S.=A0

=A0

=A0=A0<= /span>

On Fri, Dec 7, 2012 at 5:12 PM, Bill Bradburry <bbradburry@bellsouth.net> wrote:

I am working on cleaning up my ground system and I n= oticed that I have
several, 3 or 4, places on my SS braided fuel hose that appears to be burnt=
like it had an electrical spark exit from it. =A0I have not found anything in
the vicinity of these places that look like where the spark? would have
jumped??

Has anyone seen something like this and what should I do about it? =A0Do I<= br> have a ground problem in the engine compartment or is this maybe static? The hoses are covered by SS and are connected on one end to a filter that has a ground strap on it and on the other end to the fuel rail which is
grounded to the engine.

Bill B


--
Homepage: =A0http:/= /www.flyrotary.com/
Archive and UnSub: =A0 http://mail.lancaironline.net:81/lists= /flyrotary/List.html

=A0

=A0


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