Return-Path: Received: from mail.tsisp.com ([65.23.108.44] verified) by logan.com (CommuniGate Pro SMTP 4.2b3) with ESMTP-TLS id 86063 for flyrotary@lancaironline.net; Sun, 23 May 2004 15:38:36 -0400 Received: from stevehome by mail.tsisp.com (Technical Support Inc.) with SMTP id CQA74584 for ; Sun, 23 May 2004 15:38:34 -0400 Reply-To: From: "Steve Brooks" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: water temp sender Date: Sun, 23 May 2004 15:41:06 -0400 Message-ID: <009401c440fd$e429ba60$6400a8c0@WORKGROUP.local> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0095_01C440DC.5D181A60" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0095_01C440DC.5D181A60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message For water, the standard is to measure it as it leaves the engine, which is the hottest point. I would think that's what you'd want to do with the oil as well, but unfortunately, there's no practical way to do that. The oil drips back to the pan from different places, and you can't measure that return flow directly. You can measure the pan temp, as I did originally, but it's not the best reading, since there isn't really a constant flow of oil past the sensor. I suspect that measuring the oil as it returns to the engine was selected as the next logical point. I have the pan temp hooked up as an Aux temp on the EM-2, but I can't say I've looked at it yet. Maybe when Tracy gets around to that data logging... :-) Someone else said that the remote oil filter was a good place to put the sensor, so I'm going to check into that this afternoon, and see if that is possible. Steve Steve, just be aware that the 210F limit referred to is measured after the oil cooler. So if your filter is after your cooler then you will be measuring it at the "recommended" point. Not to say you can not measure it at the filter even if before the cooler, but clearly if it has not gone through the oil cooler yet, it will be considerably hotter than 210F. As Rusty mentioned, the oil pan is not the best place to measure temperature. Ed Anderson [Steve Brooks] Ed, My filter is after the oil cooler. I was pretty sure, but I went to the airport to verify it, and also remove the sensor from it's old location. There is not any pre-made holes to install the sensor, but there is a flat spot on the top, that looks to me like it's at the center tube feeding the filter. Seems like that would be a good spot. My wife went with me to go to a store, so I only had a half hour or so, and didn't have a drain pan so I could pull the filter. I didn't have a bolt with the right thread to put in where the old sensor was, so I may just have to reinstall the old adapter and insert a 1/8 NPT plug. That may be better any way in case I ever decide to install another sensor at that location. Thanks for the help. Steve ------=_NextPart_000_0095_01C440DC.5D181A60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
 

For=20 water, the standard is to measure it as it leaves the engine, = which is the=20 hottest point.  I would think that's what you'd want to = do with=20 the oil as well, but unfortunately, there's no practical way = to do=20 that.  The oil drips back to the pan from different = places, and=20 you can't measure that return flow directly.  You can measure = the pan=20 temp, as I did originally, but it's not the best reading, since = there=20 isn't really a constant flow of oil past the = sensor.   I=20 suspect that measuring the oil as it returns to the engine was = selected as=20 the next logical point.  I have the pan temp hooked up as an = Aux temp=20 on the EM-2, but I can't say I've looked at it yet.  Maybe = when=20 Tracy gets around to that data logging... :-)
 

Someone else said that = the remote=20 oil filter was a good place to put the sensor, so I'm going to = check into=20 that this afternoon, and see if that is=20 possible. 

 

Steve

 

Steve, just be aware that the 210F = limit referred=20 to is measured after the oil cooler.  So if your filter is = after your=20 cooler then you will be measuring it at the "recommended" = point.  Not=20 to say you can not measure it at the filter even if before = the=20 cooler, but clearly if it has not gone through the oil cooler yet, = it will=20 be considerably hotter than 210F.  As Rusty mentioned, the = oil pan is=20 not the best place to measure=20 temperature.

 

Ed=20 Anderson
[Steve=20 Brooks] 

Ed,

My filter is = after the oil=20 cooler.  I was pretty sure, but I went to the airport  = to verify=20 it, and also remove the sensor from it's old=20 location.  

There is not any = pre-made=20 holes to install the sensor, but there is a flat spot on the top, = that=20 looks to me like it's at the center tube feeding the = filter. =20 Seems like that would be a good spot.  My wife went with me = to go to=20 a store, so I only had a half hour or so, and didn't have a drain = pan so I=20 could pull the filter.   I didn't have a bolt with = the=20 right thread to put in where the old sensor was, so I may just = have to=20 reinstall the old adapter and insert a 1/8 NPT plug.  That = may be=20 better any way in case I ever decide to install = another sensor at=20 that location. 

Thanks for the=20 help.

Steve 

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