X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.4.51.81] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 180451 for flyrotary@lancaironline.net; Tue, 19 Jul 2005 12:34:43 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.4.51.81; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 19 Jul 2005 09:33:56 -0700 Message-ID: Received: from 64.4.51.220 by BAY107-DAV9.phx.gbl with DAV; Tue, 19 Jul 2005 16:33:56 +0000 X-Originating-IP: [64.4.51.220] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Ignition problem Date: Tue, 19 Jul 2005 12:33:53 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_006E_01C58C5E.1F5CFF50" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Tue, 19 Jul 2005 12:33:53 -0400 X-OriginalArrivalTime: 19 Jul 2005 16:33:56.0899 (UTC) FILETIME=[A8B35F30:01C58C7F] This is a multi-part message in MIME format. ------=_NextPart_000_006E_01C58C5E.1F5CFF50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Buly, got your EC2 & EM2 this morning. Wish I had good news but I found = no sign of trouble with the EC2. Both A & B controllers functioned = normally. It communicated OK with the test bench EM2. =20 When I tested your EM2 with your EC2 they also communicated OK. I did = find a couple of problems in my quick look at the EM2. EGT 1 and CHT 4 = are not functioning. This may indicate that the input buffer for these = channels are blown. These are on two different ICs so it is very = unlikely that two failed at the same time. You might want to check the = wiring on these two pins. See your instructions for the connector & pin = numbers. It's possible that these two inputs were blown by ESD = (electrostatic discharge) while wiring things up. Always wire = everything on the connector prior to plugging it in the EM2. I'll look = at it further to determine why these functions are not working. BTW, I = see that the HOBBS is at 14.5 hours so you must have at least some run = time on the engine. Did both of the rotor EGT readings work during this = time? Or were you using 2 EGTs? Bottom line is that there is nothing that would have prevented the = engine from running. I know you have checked the wiring in the past but take a fresh look at = it, especially the connections mentioned above. Another possible = problem area on composite planes is the grounding scheme. This has = caused more trouble shooting nightmares for me than I care to recall so = look at that too. There is no quick way for me to describe how it ought = to be. There are simply too many ways to do it wrong. Tracy=20 Subject: [FlyRotary] Re: Ignition problem On 7/18/05 8:42 AM, "Mark R Steitle" = > = wrote: > Buly, > Unless I misunderstood you, you stated that there is no spark to the > plugs, or to the screwdriver. If this is true, how will installing = new > plugs help anything? I don't mean to sound like a smart a$$, but = the > problem doesn't seem to be the plugs. Have you checked the fuses to = the > coils? If they are getting power, and are properly grounded, then I > would guess that the problem is with the EC2 or its associated > wiring/connectors. >=20 > Mark S. I knew that Mark, just that with all the emails, the chronology got = mixed up. I checked every pin on every coil and they had power and ground The bottom line is the both units are on their way to RWS for check = up. When they come back I'll let you know. Buly >> Homepage: http://www.flyrotary.com/ >> Archive: = http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_006E_01C58C5E.1F5CFF50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Buly, got your EC2 & EM2 this morning.  Wish I had good = news but I=20 found no sign of trouble with the EC2.  Both A & B controllers=20 functioned normally.  It communicated OK with the test bench = EM2. =20
 
When I tested your EM2 with your EC2 they also communicated = OK. =20 I did find a couple of problems in my quick look at the EM2.  EGT 1 = and CHT=20 4 are not functioning.  This may indicate that the input = buffer for=20 these channels are blown.   These are on two = different ICs=20 so it is very unlikely that two failed at the same time.  You might = want to=20 check the wiring on these two pins.  See your instructions for the=20 connector & pin numbers.  It's possible that these = two inputs=20 were blown by ESD (electrostatic discharge) while wiring things=20 up.  Always wire everything on the connector prior to plugging = it in=20 the EM2.   I'll look at it further to determine why these = functions=20 are not working.   BTW, I see that the HOBBS is at 14.5 hours = so you=20 must have at least some run time on the engine.  Did both of = the rotor=20 EGT readings work during this time?  Or were you using 2 = EGTs?
 
Bottom line is that there is nothing that would have prevented the = engine=20 from running.
 
I know you have checked the wiring in the past but take a fresh = look at it,=20 especially the connections mentioned above.   Another possible = problem=20 area on composite planes is the grounding scheme.  This has caused = more=20 trouble shooting nightmares for me than I care to recall so look at that = too.  There is no quick way for me to describe how it ought to = be. =20 There are simply too many ways to do it wrong.
 
Tracy
 
 
Subject: [FlyRotary] Re: Ignition problem

On 7/18/05 8:42 AM, "Mark R Steitle" <mark.steitle@austin.utexas= edu>=20 wrote:

> Buly,
> Unless I misunderstood you, you = stated that=20 there is no spark to the
> plugs, or to the screwdriver.  = If this=20 is true, how will installing new
> plugs help anything?  I = don't=20 mean to sound like a smart a$$, but the
> problem doesn't seem = to be the=20 plugs.  Have you checked the fuses to the
> coils?  If = they=20 are getting power, and are properly grounded, then I
> would = guess that=20 the problem is with the EC2 or its associated
>=20 wiring/connectors.
>
> Mark S.

I knew that Mark, = just that=20 with all the emails, the chronology got mixed
up. I checked every = pin on=20 every coil and they had power and ground
The bottom line is the = both units=20 are on their way to RWS for check up. When
they come back I'll let = you=20 know.
Buly



>>  Homepage:  http://www.flyrotary.com/
>&= gt; =20 Archive:   http://lancai= ronline.net/lists/flyrotary/List.html
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