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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1315739@logan.com>
Subject: Re: [FlyRotary] Re: water temp location
Date: Wed, 9 Aug 2006 18:52:34 -0400
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I can think of a possible reason that the stock coolant temp sensor in the 
rear housing of the 13B will read higher than the outlet water temperature 
after the water pump.  First, the coolant at the rear housing near the 
sensor will normally be higher (I've measured it) than coolant flowing past 
the first housing - due to the fact the first housing has added its heat 
before the coolant gets to the second (rear) housing.  Now this could lead 
you to believe that therefore the coolant temp coming out the pump would 
naturally be at least as high as at the rear housing.  However, I suspect 
that some of the hotter coolant's heat is transferred to the cooler incoming 
coolant (that the hotter coolant  passes headed back to the pump) - this 
through the metal connecting the different coolant channels

Just a SWAG

Ed.


----- Original Message ----- 
From: "george lendich" <lendich@optusnet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, August 09, 2006 6:23 PM
Subject: [FlyRotary] Re: water temp location


> Buly/ Bill,
> I'm confused - any indications, suggestions, ideas why there should be a
> difference.
> Perhaps higher pressure after the pump?
> I think I would want to know the highest, in engine, coolant and oil 
> temps.
> George (down under)
>
>> I did it with one of the handheld temp meters. Surprisingly the water
>> exiting the pump was about 5-10 degree lower temp? Did it couple
>> different ways and the results were similar.
>> Buly
>>
>> > Group,
>> >
>> >
>> >
>> > Has anyone measured the water temp difference between the stock
>> > (under the oil filter tower) and the water pump outlet. Bill Eslick
>> > and I were discussing this a couple of weeks ago. I am measuring
>> > water temp going out of the engine, post water pump outlet. Just
>> > curious!
>> >
>> >
>> >
>> > Thanks,
>> >
>> > Jason
>> >
>> >
>>
>> --
>> Homepage:  http://www.flyrotary.com/
>> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
>
>
> --
> Homepage:  http://www.flyrotary.com/
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>