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Message-ID: <5cf132c0711200248h40b6835ct3ffd3309fa948698@mail.gmail.com>
Date: Tue, 20 Nov 2007 04:48:49 -0600
From: "Mark Steitle" <msteitle@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: heat exchanger placement
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References: <list-2497068@logan.com>

George,
That describes my cooling system exactly.  Originally, I had the
oil/water exchanger first, followed by the oil/air exchanger.  This
dumped a max amount of btu's into the water.  By running the oil
through the oil/air exchanger first, then into the oil/water
exchanger, it now dumps as much heat into the air.  The remaining heat
goes into the coolant.  This only works if you have excess water
cooling capacity, which I did.  Now the temps track within 5-8* of
each other.  The drawback is the extra plumbing, and some extra
weight.

Mark

On Nov 20, 2007 12:37 AM, George Lendich <lendich@optusnet.com.au> wrote:
>
>
> Why stop with the radiator?  Move the oil cooler there as well to make this
> approach worth all the effort.  And there will be a lot of effort : )
>
>
>
>
> Tracy
>
> Quite correct Tracy,
> Nearly everyones favorite example the P-51 used stacked radiator and oil
> coolers. My thought is if you go to the trouble of a wing mount or belly
> scoop run a slightly larger radiator and one of the large fluidyne water to
> oil coolers. (much to P.L's chagrin) Many nascar teams do use them. Mark
> Stetle (sic) put one on his 20B powered Lancair and it has helped his climb
> cooling a lot. His is a Lancair ES 4 place and seems to be cooling very well
> now.
> Bill jepson
>
>
> Bill,
>  Can't remember who - but the suggestion of an air cooler before the water
> to oil cooler is a good one. Would certainly stop any possibility of oil
> over heating the water and have the added benefit of the water heating the
> oil.
> George (down under)