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From: "George Lendich" <lendich@optusnet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-655184@logan.com>
Subject: Re: [FlyRotary] Re: Water temp sender
Date: Thu, 3 Feb 2005 07:15:19 +1000
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Mark,
How well does it work?
George ( down under)
> Buly,
> My 2 cents...
> My water temp sensor is in the thermostat housing (thermostat has been
> removed).  That is the location that represents the coolant temp after
> making its way through the entire engine, prior to being cooled by the
> radiator.  This makes sense to me as it tells me how close to boiling
> I'm running.  I think the location next to the oil filter pad will give
> you an abnormally high reading as it is located just after the coolant
> passes the combustion sections of the engine.  My 20B came with that
> port plugged.  It also seems like it will provide somewhat meaningless
> information as the coolant is not done with its task until it exits the
> engine. 
> 
> Oil temp is just the opposite situation.  As I understand it, the oil
> temp limits are set for incoming oil, not max internal oil temps, so as
> to keep the oil going to the bearings from getting too hot and damaging
> the bearings.  As I understand it, the oil that is sprayed into the
> rotors for cooling gets much hotter, but that's ok as long as you don't
> exceed the oil's maximum temp capability (hard to do with synthetics).
> So, you want to know the oil temp going into the engine so that you
> don't exceed the oil temp limits.  For diagnostic purposes, I have
> installed oil temp sensors at the engine outlet (front cover) and return
> (oil filter adapter).  I can see how well my oil cooler is working at
> various OAT and speeds.    
> 
> Mark S. 
> 
> -----Original Message-----
> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
> Behalf Of Bulent Aliev
> Sent: Tuesday, February 01, 2005 8:45 PM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Water temp sender
> 
> I use the water temp. sensor location next to the oil pressure gauge.
> Where
> is the best recommended place? I was thinking of taping one of the OAT
> sensors to the alum. water pipe coming from the pump? Any opinions?
> Buly
> 
> 
> 
> 
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