X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 180495 for flyrotary@lancaironline.net; Tue, 19 Jul 2005 13:03:23 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=atlasyts@bellsouth.net Received: from ibm70aec.bellsouth.net ([68.213.226.209]) by imf24aec.mail.bellsouth.net with ESMTP id <20050719170226.MRFZ5884.imf24aec.mail.bellsouth.net@ibm70aec.bellsouth.net> for ; Tue, 19 Jul 2005 13:02:26 -0400 Received: from [192.168.0.104] (really [68.213.226.209]) by ibm70aec.bellsouth.net with ESMTP id <20050719170225.SLEN26108.ibm70aec.bellsouth.net@[192.168.0.104]> for ; Tue, 19 Jul 2005 13:02:25 -0400 User-Agent: Microsoft-Entourage/11.1.0.040913 Date: Tue, 19 Jul 2005 13:02:22 -0400 Subject: Re: [FlyRotary] Re: Ignition problem From: Bulent Aliev To: Rotary motors in aircraft Message-ID: In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3204622944_668904" > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3204622944_668904 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable On 7/19/05 12:33 PM, "Tracy Crook" wrote: > 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 fi= nd 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 f= ailed > 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 th= ese > two inputs were blown by ESD (electrostatic discharge) while wiring thing= s 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? > =20 > Bottom line is that there is nothing that would have prevented the engine= from > running. > =20 > I know you have checked the wiring in the past but take a fresh look at i= t, > especially the connections mentioned above. Another possible problem ar= ea 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. Th= ere > is no quick way for me to describe how it ought to be. There are simply = too > many ways to do it wrong. > =20 > Tracy=20 > =20 Hi Tracy, thank you for the quick response. I know I left the plane twice overnight with the master on. Another thing is I don=B9t have EGT or CHT connected.? Anyway, John=B9s system works fine and when my package comes back I will connect it into his plane. This way I=B9ll know: if it works fine, my wiring will be a suspect. Please let me know how much I owe you for the shipping and your time. Thanks again. Buly --B_3204622944_668904 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Re: [FlyRotary] Re: Ignition problem On 7/= 19/05 12:33 PM, "Tracy Crook" <lors01@msn.com> wrote:

Buly, got your EC2 & EM2 this morning.  Wish I= had good news but I found no sign of trouble with the EC2.  Both A &am= p; B controllers functioned normally.  It communicated OK with the test= bench EM2.  
 
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 the= se channels are blown.   These are on two different ICs so it is v= ery 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 ever= ything on the connector prior to plugging it in the EM2.   I'll lo= ok at it further to determine why these functions are not working.  &nb= sp;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 durin= g this time?  Or were you using 2 EGTs?
 
Bottom line is that there is nothing that would have prevented the engine f= rom 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 pr= oblem area on composite planes is the grounding scheme.  This has cause= d more trouble shooting nightmares for me than I care to recall so look at t= hat 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
 

Hi Tracy, thank you for the quick response. I know I left the plane twice o= vernight with the master on.
Another thing is I don’t have EGT or CHT connected.?
Anyway, John’s system works fine and when my  package comes back= I will connect it into his plane. This way I’ll know: if it works fin= e, my wiring will be a suspect. Please let me know how much I owe you for th= e shipping and your time.
Thanks again.
Buly --B_3204622944_668904--