Mailing List flyrotary@lancaironline.net Message #59281
From: Bill Bradburry <bbradburry@bellsouth.net>
Subject: RE: [FlyRotary] Re: Aeroquip hose
Date: Sat, 8 Dec 2012 00:23:47 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>

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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