Return-Path: Received: from [129.116.87.170] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 817246 for flyrotary@lancaironline.net; Wed, 23 Mar 2005 12:08:52 -0500 Received-SPF: none receiver=logan.com; client-ip=129.116.87.170; envelope-from=mark.steitle@austin.utexas.edu X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C52FCA.E2638ADF" Subject: RE: [FlyRotary] Re: water temp sender connections Date: Wed, 23 Mar 2005 11:08:07 -0600 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69EC080DE@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: water temp sender connections Thread-Index: AcUvyCv8zT483gSoQHmarzB/qkRqRgAAc1FA From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C52FCA.E2638ADF Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Paul,=20 Just a comment on your sensor placement. If you locate it in the hole in the top of the end housing you will see higher temps than at the engine outlet. This is because the coolant flows down the hot (plugs) side first, then across and back through the cold side. Measurements at the end housing should give you the highest of the two readings. I don't know how exactly how much disparity there will be though.=20 =20 Mark S. ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Paul Sent: Wednesday, March 23, 2005 10:48 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: water temp sender connections =20 Thanks, Ed....I just ordered a 250F/120C VDO sender with an M10x1 thread from egauges.com (Thanks, Rusty). It will connect to my AV-10 engine monitor. I will be able to compare it to the reading I get from the sender mounted in the thermostat housing. which is connected to my ECU which has a panel display which shows water temp in Celsius. If there is a large disparity, I will have to come up with an alternative, but if it is within a few degrees, I will call it successful. Thanks again. Paul Conner ----- Original Message -----=20 From: Ed Anderson =20 To: Rotary motors in aircraft =20 Sent: Wednesday, March 23, 2005 9:25 AM Subject: [FlyRotary] Re: water temp sender connections =20 Paul, just a note of caution, if you are tempted to use the small Mazda coolant sensor location on the rear housing near the oil pressure sensor, be aware it is very none linear (perhaps the Mazda coolant gauge is as well {:>)) - if you are using another sensor then disregard. I thought I was getting temps of over 250F by monitoring the Mazda Sensor in that location - until I calibrated it in a pot of water and found out the temps were closer to 210F. =20 =20 Ed A ----- Original Message -----=20 From: Russell Duffy =20 To: Rotary motors in aircraft =20 Sent: Wednesday, March 23, 2005 12:25 AM Subject: [FlyRotary] Re: water temp sender connections =20 The engine has a stock water temp sender next to the oil pressure switch. I will try using that to send temp information to my engine monitor. If that does not work, I will install another temp sending unit like the one that came stock in the water pump housing. =20 Glad to hear you're getting real numbers now, give or take that silly metric system :-) I'm not sure what the specs are on the stock sensor, but you can get aftermarket sensors that fit the rear housing hole. The thread is M10 x 1.0, and egauges.com has them in at least the VDO range of resistance. =20 =20 Cheers, Rusty (hoping it will rain hamburgers for Tracy) =09 ________________________________ No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.7.4 - Release Date: 3/18/2005 ------_=_NextPart_001_01C52FCA.E2638ADF Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

Paul,

Just a comment on your sensor placement.  If you locate it in the hole in the top of the end = housing you will see higher temps than at the engine outlet.  This is because = the coolant flows down the hot (plugs) side first, then across and back = through the cold side.  Measurements at the end housing should give you the = highest of the two readings.  I don’t know how exactly how much = disparity there will be though.

 

Mark = S.

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Paul
Sent: Wednesday, March = 23, 2005 10:48 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = water temp sender connections

 

Thanks, Ed....I just ordered a 250F/120C VDO sender = with an M10x1 thread from egauges.com (Thanks, Rusty). It will connect to = my AV-10 engine monitor.  I will be able to compare it to the reading I get = from the sender mounted in the thermostat housing. which is connected to my = ECU which has a panel display which shows water temp in Celsius. If there is = a large disparity, I will have to come up with an alternative, but if it = is within a few degrees, I will call it successful. Thanks again.  = Paul Conner

----- Original Message ----- =

From: Ed Anderson

Sent: = Wednesday, March 23, 2005 9:25 AM

Subject: = [FlyRotary] Re: water temp sender connections

 

Paul, just a note of caution, if you are tempted to = use the small Mazda coolant sensor  location on the rear housing near = the oil pressure sensor, be aware it is very none linear (perhaps the Mazda = coolant gauge is as well {:>)) - if you are using another sensor = then disregard.  I thought I was getting temps of over 250F by = monitoring the Mazda Sensor in that location - until I calibrated it in a pot of water = and found out the temps were closer to 210F.  =

 

Ed A

----- Original Message ----- =

Sent: = Wednesday, March 23, 2005 12:25 AM

Subject: = [FlyRotary] Re: water temp sender connections

 

The engine has a stock water temp sender next to the = oil pressure switch. I will try using that to send temp information to my = engine monitor.  If that does not work, I will install another temp = sending unit like the one that came stock in the water pump = housing.

 

Glad to hear you're getting = real numbers now, give or take that silly metric system :-)  = I'm not sure what the specs are on the stock sensor, but you can get = aftermarket sensors that fit the rear housing hole.  The thread is M10 x 1.0, and egauges.com has them in at least the VDO range of resistance.   

 

Cheers,

Rusty (hoping it will rain hamburgers for Tracy)

No virus found in this incoming message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.7.4 - Release Date: = 3/18/2005

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