X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost02.isp.att.net ([204.127.217.102] verified) by logan.com (CommuniGate Pro SMTP 6.0c3) with ESMTP id 5928925 for flyrotary@lancaironline.net; Sat, 08 Dec 2012 00:24:21 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.217.102; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-189-141.mco.bellsouth.net[98.85.189.141]) by isp.att.net (frfwmhc02) with SMTP id <20121208052346H02000b4ere>; Sat, 8 Dec 2012 05:23:46 +0000 X-Originating-IP: [98.85.189.141] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Aeroquip hose Date: Sat, 8 Dec 2012 00:23:47 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01CDD4DA.4AD11D70" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac3U45EPI9CDAgM8Qwi8DAMPTE+3FgAH6Qog X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01CDD4DA.4AD11D70 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit 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 "forest of tabs" grounding block on the firewall. 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 "sandwich" 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 engine 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 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 burnt 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 ------=_NextPart_000_0000_01CDD4DA.4AD11D70 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

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 “forest of tabs” grounding block on = the firewall.  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 = “sandwich” 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 engine = 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 <msteitle@gmail.com> 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 = burnt
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


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