X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-bw0-f226.google.com ([209.85.218.226] verified) by logan.com (CommuniGate Pro SMTP 5.3c2) with ESMTP id 3985794 for flyrotary@lancaironline.net; Sun, 22 Nov 2009 19:31:35 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.218.226; envelope-from=msteitle@gmail.com Received: by bwz26 with SMTP id 26so4856824bwz.27 for ; Sun, 22 Nov 2009 16:31:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=jgtVK+Hl1iZ2sMrg0TEDqs2aLkHa5scE3eHWou2D17U=; b=F0r03WToKrpdzkKAp3jbcxJIoUOWOyyTVADoDXAlvhRzJ5IoL7JjcjltbdjxhpiHj4 ZOAu8yL6BzMcefxUG+XoJKCFzYlyurlicObIoHBCDExNUxYt+VAPLmgbaheDmCENb1x+ hC1pgZ69egWqQBJtLEoBXOP1QDcO/TnZz5WZs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=cpjzmP4QPYod9hU17nqH23GX5SrE4swgdoJvdlVeetCb8eKpiwzm3oKNWaSb2kFwK6 BGk2SoA8nEneuXIIzSWoufIeQnKSSP7qXAfrCkFacaI7126Z/GtKu4PuUHqK7AAPikY5 IqzyJK8bM1lwxAb38RjU8SHr4+ogjbXPLU5DM= MIME-Version: 1.0 Received: by 10.204.48.146 with SMTP id r18mr4002504bkf.61.1258936260429; Sun, 22 Nov 2009 16:31:00 -0800 (PST) In-Reply-To: References: Date: Sun, 22 Nov 2009 18:31:00 -0600 Message-ID: <5cf132c0911221631ma9127f8i4f494419eb04be60@mail.gmail.com> Subject: Re: [FlyRotary] Re: No start From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00032555457a99072a0478fef083 --00032555457a99072a0478fef083 Content-Type: text/plain; charset=ISO-8859-1 Steve, I read your other post on what you discovered regarding your bad ground. I wonder how many of us have our engine grounds tied to a bolt near the front cover or end housing? (Mine does...) Mark S. On Sun, Nov 22, 2009 at 6:41 AM, Steve Brooks wrote: > Mark, > I am thinking about just running all but the starter off of the forward > battery. Since I have two batteries, it is a relatively easy fix. It still > bugs me, what has changed. > Steve > > Mark Steitle wrote: > >> Steve, >> Early on with my project, I was beginning to start/run the engine. I >> quickly discovered that sometimes it would start, and sometimes it wouldn't. >> If the battery voltage dropped to some unknown voltage the engine would not >> start, even though it would continue to crank (although slower than normal). >> I didn't have a working charging system at the time, so the battery would >> get weaker and weaker as I continued down this road. At the time I was >> using a 12v Panasonic emergency backup supply battery. It didn't have the >> CCA to do more than one or two cranks before the voltage dropped too low to >> possibly start the engine. I must have damaged the battery in the process >> as a new battery solved the problem. You stated that you installed a new >> battery, but you didn't state if you charged it up before trying to start >> your engine. I suggest you 1) charge the new battery to 100%, 2) hook up >> the starter to a spare battery for cranking. Personally, I think this makes >> a good case for going with a 24v system. Mark S. >> >> >> On Sat, Nov 21, 2009 at 12:40 PM, Steven W. Boese > SBoese@uwyo.edu>> wrote: >> >> Steve, >> >> I was able to produce symptoms similar to what you describe by >> inserting a 1.5 V flashlight battery into the CAS return wire such >> that the CAS end of the wire was 1.5 V more negative than the CAS >> return wire going to the EC2: >> CAS ----- battery ++++ EC2 >> >> The opposite polarity didn't cause problems. With the battery >> installed, there are one or two sparks when starting to turn the >> CAS and then no more sparks until the CAS sensor is turning >> significantly faster than would be the case when turning the >> engine with the starter. >> >> It seems that you may have the CAS return grounded in addition to >> the connection to the EC2. If this is the case, then the voltage >> drop from the starter current may shift the CAS return voltage >> similar to what I did with the test setup. If I disconnect the >> CAS from the EC2 at the EC2 connector, all the CAS wires show >> infinite resistance to ground. It might be useful to see if your >> wiring is similar. >> >> Steve Boese >> >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html >> >> >> > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --00032555457a99072a0478fef083 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Steve,
=A0
I read your other post on what you discovered regarding your bad groun= d.=A0 I wonder how many of us have our engine grounds=A0tied to a bolt near= the front cover or end housing?=A0 (Mine does...)
=A0
Mark S.

On Sun, Nov 22, 2009 at 6:41 AM, Steve Brooks <cozy4pilot@gmai= l.com> wrote:
Mark,
I am thinking about jus= t running all but the starter off of the forward battery. =A0Since I have t= wo batteries, it is a relatively easy fix. =A0It still bugs me, what has ch= anged.
Steve

Mark Steitle wrote:
Steve,
=A0Early on with my pr= oject, I was beginning to start/run the engine. =A0I quickly discovered tha= t sometimes it would start, and sometimes it wouldn't. =A0If the batter= y voltage dropped to some unknown voltage the engine would not start, even = though it would continue to crank (although slower than normal). =A0I didn&= #39;t have a working charging system at the time, so the battery would get = weaker and weaker as I continued down this road. =A0At the time I was using= a 12v Panasonic emergency backup supply battery. =A0It didn't have the= CCA to do more than one or two cranks before the voltage dropped too low t= o possibly start the engine. =A0I must have damaged the battery in the proc= ess as a new battery solved the problem. =A0You stated that you installed a= new battery, but you didn't state if you charged it up before trying t= o start your engine. =A0I suggest you 1) charge the new battery to 100%, 2)= hook up the starter to a spare battery for cranking. =A0Personally, I thin= k this makes a good case for going with a 24v system. =A0Mark S.
=A0

=A0On Sat, Nov 21, 2009 at 12:40 PM, Steven W. Boese <SBoese@uwyo.edu <mailt= o:SBoese@uwyo.edu&= gt;> wrote:

=A0 =A0Steve,

=A0 =A0I was able to produce symptoms similar to w= hat you describe by
=A0 =A0inserting a 1.5 V flashlight battery into the= CAS return wire such
=A0 =A0that the CAS end of the wire was 1.5 V more= negative than the CAS
=A0 =A0return wire going to the EC2:
=A0 =A0CAS ----- battery ++++ EC2
=A0 =A0The opposite polarity didn't cause problems. =A0With the b= attery
=A0 =A0installed, there are one or two sparks when starting to tu= rn the
=A0 =A0CAS and then no more sparks until the CAS sensor is turnin= g
=A0 =A0significantly faster than would be the case when turning the
=A0 = =A0engine with the starter.

=A0 =A0It seems that you may have the CA= S return grounded in addition to
=A0 =A0the connection to the EC2. =A0If= this is the case, then the voltage
=A0 =A0drop from the starter current may shift the CAS return voltage
= =A0 =A0similar to what I did with the test setup. =A0If I disconnect the=A0 =A0CAS from the EC2 at the EC2 connector, all the CAS wires show
= =A0 =A0infinite resistance to ground. =A0It might be useful to see if your<= br> =A0 =A0wiring is similar.

=A0 =A0Steve Boese



=A0 =A0-= -
=A0 =A0Homepage: =A0http://www.flyrotary.com/
=A0 =A0Archive and UnSub: =A0 =A0 = =A0http://mail.lancaironline.net:81/lists/flyrotary/List.html=




--
Homepage: =A0http://www.flyrotary.com/
Archive and U= nSub: =A0 http://mail.lancaironline.net:81/lists/flyrotary/Li= st.html

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