X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-fx0-f52.google.com ([209.85.161.52] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTPS id 5123476 for flyrotary@lancaironline.net; Tue, 13 Sep 2011 19:43:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.161.52; envelope-from=msteitle@gmail.com Received: by fxe23 with SMTP id 23so959746fxe.25 for ; Tue, 13 Sep 2011 16:43:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=bAHAMxY2cEUz8nX8rOXjgmM+o/zecSmyT9zagx+5IHs=; b=B8zJ2d/leFALQco7kX3Hvk2GRRiVOJkwGluKydl6Apz6Rji/AxApY3bFciHaW9NQq6 hh4wy0SdlOrId3iVNjKN5fakdhB8E+r4SbB1Q6rABIlUX1W9ddD1jCvP+pKuAL8vTLql jbcAvpazeW/84cmjDJQbR+xdTAJL+TQYSnIhE= MIME-Version: 1.0 Received: by 10.223.34.13 with SMTP id j13mr563046fad.1.1315957391028; Tue, 13 Sep 2011 16:43:11 -0700 (PDT) Received: by 10.223.87.77 with HTTP; Tue, 13 Sep 2011 16:43:10 -0700 (PDT) In-Reply-To: References: Date: Tue, 13 Sep 2011 18:43:10 -0500 Message-ID: Subject: Re: [FlyRotary] Re: EM2 problems From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015174734bed4f07304acdb3432 --0015174734bed4f07304acdb3432 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Chris, For a quick and dirty check, hook a temporary ground wire from the sensor t= o the case of the EM-2 and see if this helps. Did you use teflon tape on the sensor? If so, this could be causing a poor ground. So, hook the temp ground wire directly to the sensor. Mark On Tue, Sep 13, 2011 at 6:11 PM, Chris Barber wr= ote: > I have not spoken with Tracy about the latest issue as I try to leave hi= m > alone until I exhaust other avenues, including y'all first. I imagine he > gets pretty overwhelmed at times. > > > > As to the EGT issue, I have sent the unit back to Tracy and it got a good > check up. I THINK I have tried the things suggested and I have checked t= he > d-sub, grounds, wires etc until my eyes are crossing and I start shouting > "French" at inanimate wires and connections. Yeah, real mature...and I a= m > trying to build an airplane...YIKES. > ------------------------------ > *From:* Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf > of Mark Steitle [msteitle@gmail.com] > *Sent:* Tuesday, September 13, 2011 5:45 PM > > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: EM2 problems > > Chris, > > Have you spoken with Tracy? I suspect he will have some good > suggestions. My guess is wiring, especially in relation to the H2O senso= r. > I would take a real close look at the EM-2 d-sub connector for solder > bridges or cold solder joints. Also, I would check ground between the EM= -2, > engine and battery with an ohm-meter. And finally, I would double check > that something isn't cross-wired. > > Mark S. > > On Tue, Sep 13, 2011 at 5:37 PM, Chris Barber = wrote: > >> OH, and when I use my handy dandy hand held thermal gage from HF, I am >> getting the same temp as the reading when the engine is not ruining, thu= s >> something is happening when I start up. OH, btw my engine is not >> overheating. Like I mentioned, even at 100 degree days, the temps are d= own >> significantly ...it is the EM2 readings that are off....unless I can run >> my engine at 270 degrees with no boil over. >> >> >> >> Other than this, currently the engine is running GREAT. (yeah, I know, >> famous last words....especially with my history....DOH!) >> >> >> >> Chris >> >> ------------------------------ >> >> *From:* Rotary motors in aircraft [flyrotary@lancaironline.net] on >> behalf of Chris Barber [cbarber@texasattorney.net] >> *Sent:* Tuesday, September 13, 2011 5:28 PM >> *To:* Rotary motors in aircraft >> *Subject:* [FlyRotary] EM2 problems >> >> I have posted in the past with problems regarding my EM2 giving me >> wildly inconsistent reading with my EGT's. The reading flash to randomly >> increasing numbers up to readings of 9000 degrees. I replaced the EGTse= nsors and all wires/thermal couplersto the EGTto no avail. The consensus h= as been "noise" especially since the EGTare so low voltage. I have now run= the wirers along the outside to the >> plane away from all other wires and still no joy. >> >> >> >> NOW, I am having strange readings with the coolant temperature. I have >> not changed anything, no movement of wires etc...well, at first, I have = now >> replaced the sender with no change. What seems to be happening is that = when >> the engine is not running, the coolant temperature seems about right (wh= ich >> is pretty close to the oil temp....my oil temps dropped quite a >> bit after finally getting my oil pressure up with a new front >> cover O-ring). HOWEVER, when I start up the engine the coolant temperat= ure >> reading shoots up anywhere from 50 to 100 degrees higher than before I s= tart >> and/or immediately after I shut down (thus not enough time to cool). It >> is also about the same amount higher than the oil reading. I have >> removed the wire from the bundled harness to minimize interference. >> >> >> >> I am suddenly also having an issue with the coolant pressure reading >> flashing to "N" intermittingly (I am guessing similiar to the NOP on the >> tach). I too have checked the wires. Nothing has been changed, the >> coolant temp and pressure just started happening...the EGT has always >> been a problem. Again, I have now replaced all the sening units and >> wires. >> >> >> >> Ok, while the EGT may be somewhat secondary in use, the coolant >> temperature is not. I have tried various wires. Moved wires and replac= ed >> all sensors and re-did D-sub pins. >> >> >> >> Thoughts? >> >> >> >> I am about two minutes away from ordering the Dynon engine monitor( whic= h >> I intend to buy eventually anyway), however, I am not thrilled at the i= dea >> of throwing money at what may be a simple fix...and may still have probl= ems >> with even with the new unit. >> >> >> >> Thanks. >> >> >> >> Chris >> > > --0015174734bed4f07304acdb3432 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Chris,=A0

For a quick and dirty check, hook a temporary = ground wire from the sensor to the case of the EM-2 and see if this helps. = =A0Did you use teflon tape on the sensor? =A0If so, this could be causing a= poor ground. =A0So, hook the temp ground wire directly to the sensor. =A0<= /div>

Mark=A0

On Tue, Sep 1= 3, 2011 at 6:11 PM, Chris Barber <cbarber@texasattorney.net> wrote:

I have not spoken with Tracy about the latest issue as I try to leave hi= m alone until I exhaust other avenues, including y'all first.=A0 I imag= ine he gets pretty overwhelmed at times.=A0

=A0

As to the=A0EGT issue, I have sent the unit back to Tracy and it = got a good check up.=A0 I THINK I have tried the things suggested and I hav= e checked the d-sub, grounds, wires=A0etc until my eyes are crossing and I = start shouting "French" at inanimate wires and connections.=A0 Yeah, real mature...and I am trying to build an airpla= ne...YIKES.

From: Rotary motors in aircraft [flyrotary@lancaironline.net] on beha= lf of Mark Steitle [msteitle@gmail.com]
Sent: Tuesday, September 13, 2011 5:45 PM

To: Rotary motors in aircraft
Subject: [FlyRotary] Re: EM2 problems

Chris,=A0

Have you spoken with Tracy? =A0I suspect he will have some good sugges= tions. =A0My guess is wiring, especially in relation to the H2O sensor. =A0= I would take a real close look at the EM-2 d-sub connector for solder bridg= es or cold solder joints. =A0Also, I would check ground between the EM-2, engine and battery with an ohm-meter. =A0An= d finally, I would double check that something isn't cross-wired. =A0

Mark S. =A0 =A0

On Tue, Sep 13, 2011 at 5:37 PM, Chris Barber <cbarber@= texasattorney.net> wrote:

OH, and when I use my handy dandy hand held=A0thermal gage from H= F, I am getting the same temp as the reading when the = engine is not ruining, thus something is happening when I start up.= =A0 OH, btw my engine is not overheating.=A0 Like I mentioned, even at 100 degree days, the temps are down significantl= y ...it is the=A0EM2 readings that are off....unless I= can run my engine at 270 degrees with no boil over.

=A0

Other than this, currently the engine is running GREAT. (yeah, I know, f= amous last words....especially with my history....DOH!)

=A0

Chris

From: Rotary motors in aircraft [flyrotary@lancaironline.net] on beha= lf of Chris Barber [cbarber@texasattorney.net]
Sent: Tuesday, September 13, 2011 5:28 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] EM2 problems

I have posted in the past with problems regarding my=A0EM2= giving me wildly=A0inconsistent reading with my EGT's= . The reading flash to=A0randomly increasing numbers up t= o readings=A0of 9000 degrees.=A0=A0I replaced the=A0EGT sensors and all wires/thermal couplers to the=A0EGT to no avail.=A0 The consensus has been "noise" especially s= ince the=A0EGT are so low voltage.=A0 I have now run t= he wirers along the outside to the plane away from all other wires and still no joy.

=A0

NOW, I am having strange readings=A0with the coolant temperature.=A0 I h= ave not changed anything, no movement of wires etc...well, at first, I have= now replaced the sender with no change.=A0 What seems to be happening is t= hat when the engine is not running, the coolant temperature seems about right (which is pretty close to the oil te= mp....my oil temps dropped=A0quite a bit=A0after=A0finally getting m= y oil pressure up with a new front cover=A0O-ring).=A0 HOWEVER, when I star= t up the engine the coolant temperature reading shoots up anywhere from 50 to 100 degrees higher than=A0before I start and= /or=A0immediately after I shut down (thus not enough time to cool).= =A0 It is also about the same=A0amount=A0higher= than the oil reading.=A0 I have removed the wire from the bundled harness to minimize interference.

=A0

I am suddenly also having an issue with the coolant pressure reading fla= shing to "N" intermittingly (I am guessing=A0similiar to t= he=A0NOP on the tach).=A0 I too have checked th= e wires.=A0 Nothing has been changed, the coolant temp and pressure just started happening...the=A0EGT has always bee= n a problem.=A0 Again, I have now replaced all the=A0sening units an= d wires.

=A0

Ok, while the=A0EGT may be somewhat secondary in us= e, the coolant temperature is not.=A0 I have tried various wires.=A0 Moved = wires and replaced all sensors and re-did D-sub pins.=A0

=A0

Thoughts?

=A0

I am about two minutes away from ordering the=A0Dynon engine monitor( which I intend to buy eventually anyway), however,=A0 I = am not thrilled at the=A0idea of throwing money at what may be a simple fix= ...and may still have problems with even with the new unit.

=A0

Thanks.

=A0

Chris



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