X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 07 Jan 2008 11:31:27 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d20.mx.aol.com ([205.188.139.136] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2634454 for lml@lancaironline.net; Mon, 07 Jan 2008 10:29:38 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.139.136; envelope-from=VTAILJEFF@aol.com Received: from VTAILJEFF@aol.com by imo-d20.mx.aol.com (mail_out_v38_r9.3.) id q.c6d.1c410eb0 (42808) for ; Mon, 7 Jan 2008 10:28:12 -0500 (EST) From: VTAILJEFF@aol.com X-Original-Message-ID: X-Original-Date: Mon, 7 Jan 2008 10:28:12 EST Subject: Re: [LML] Electrical issue X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1199719692" X-Mailer: Unknown sub 34 X-Spam-Flag: NO -------------------------------1199719692 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit sounds like my old problem... turned out to be a bad cell in the battery. In a message dated 1/6/2008 11:30:26 P.M. Central Standard Time, sreeves@sc.rr.com writes: I had some good advice from the list concerning my electrical problem, and went through everything again. Before I pull my hair out, I'd like to post the symptoms and any accompanying issues. A while back my alternator decided to start cycling on and off every now and again, mostly when under load. It will never do it during a day flight, and only during the day when running strobes. I can induce it at night fairly easily sometimes with the navs, fuel pump, landing light, and panel lights (no strobes needed..they seem able to induce the problem by themselves). I was returning from Miss. a few nights ago and it decided to do this. I shut down the strobes and everything was fine (as usual). I turned the strobes back on and the last 30 min or so of the flight was uneventful. I installed a new B&C battery yesterday and the problem occurred again yesterday evening 1 time near the beginning of the flight, and more so on the ground after I landed and had the engine at idle power. I stayed in the pattern since I had a "known" electrical issue. Here are few things I may have forgotten to mention, and I can't be sure if this could be a cause of my problem. 1) A while back I noticed my main relay would not power the panel. I could hear the "clunk" when the masters were engaged, but nothing on the panel. After a few more tries, the panel engaged power and no problem. I put the plane in the shop and they could not duplicate the problem. I had forgotten about this, as it has not happened for a while now later, it powered on). Could this be the root of my problem? 2) I notice both my EI voltmeter as well as the Dynon (backup to my gyro ;) ) are reporting about 13.5V when in flight. I would assume this should be around 14.5 or so. 3) The main problem is that if under load, the system will "shut down" the charging system intermittently and then come back online. Sometimes in a rapid (5 secs or so) succession or sometimes in more erratic unpredictable intervals. Like the flight back the other night, it acted up then stayed online for the remainder of the flight. I thought I had the alternator tested at one time and was told it was fine. This problem is driving me crazy. Any and all input would be appreciated. Thanks again Steve Reeves Glasair 1FT N38SR -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html **************Start the year off right. Easy ways to stay in shape. http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489 -------------------------------1199719692 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
sounds like my old problem... turned out to be a bad cell in the=20 battery.
 
In a message dated 1/6/2008 11:30:26 P.M. Central Standard Time,=20 sreeves@sc.rr.com writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>I had=20 some good advice from the list concerning my electrical
problem, and w= ent=20 through everything again.  Before I pull my hair
out, I'd like to= =20 post the symptoms and any accompanying issues.

A while back my=20 alternator decided to start cycling on and off every
now and again, mo= stly=20 when under load.  It will never do it during a
day flight, and on= ly=20 during the day when running strobes.  I can
induce it at night fa= irly=20 easily sometimes with the navs, fuel pump,
landing light, and panel li= ghts=20 (no strobes needed..they seem able to
induce the problem by=20 themselves).  I was returning from Miss. a few
nights ago and it=20 decided to do this.  I shut down the strobes and
everything was f= ine=20 (as usual).  I turned the strobes back on and the
last 30 min or=20= so=20 of the flight was uneventful.

I installed a new B&C battery=20 yesterday and the problem occurred
again yesterday evening 1 time near= the=20 beginning of the flight, and
more so on the ground after I landed and=20= had=20 the engine at idle
power.  I stayed in the pattern since I had a=20 "known" electrical issue.

Here are  few things I may have=20 forgotten to mention, and I can't be
sure if this could be a cause of=20= my=20 problem.

1)  A while back I noticed my main relay would not po= wer=20 the
panel.  I could hear the "clunk" when the masters were engage= d,=20 but
nothing on the panel.  After a few more tries, the   &nb= sp;=20 panel engaged
power and no problem.  I put the plane in the shop=20= and=20 they could not
duplicate the problem.  I had forgotten about this= , as=20 it has not
happened for a while now     later, it powered=20 on).  Could this be the
root of my problem?

2)  I not= ice=20 both my EI voltmeter as well as the Dynon (backup to my
gyro ;) ) = ;=20 are reporting about 13.5V when in flight.  I would assume
this sh= ould=20 be around 14.5 or so.

3)  The main problem is that if under lo= ad,=20 the system will "shut
down" the charging system intermittently and the= n=20 come back
online.  Sometimes in a rapid (5 secs or so) succession= =20     or sometimes
in more erratic unpredictable intervals. Li= ke=20 the flight back the
other night, it acted up then stayed online for th= e=20 remainder of the flight.

    I thought I had the alternat= or=20 tested at one time and was told it was fine.

This problem is drivin= g me=20 crazy.  Any and all input would be
appreciated.  Thanks=20 again



Steve Reeves
Glasair 1FT N38SR


--
Fo= r=20 archives and unsub=20 http://mail.lancaironline.net:81/lists/lml/List.html



Start the year off righ= t. Easy ways to stay in shape in the ne= w year.
-------------------------------1199719692--