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----- Original Message -----
From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, December 19, 2003 7:31 PM
Subject: [FlyRotary] Re: evap core versus radiator
>
> Subject: [FlyRotary] Re: evap core versus radiator
>
>
> > Posted for "sqpilot@earthlink" <sqpilot@earthlink.net>:
> >
> >
> > > > .
> >
> >
> >
> > Hi, Ed....Do I understand correctly that only one of these cores would
> be
> > needed to cool 160 HP at 120 MPH? Thanks. Paul Conner
> >
>
> Hi Paul,
>
> No - sorry if I misled you. Unless the pass several weeks of studying
> K&W are for naught, its fairly clear that for 160HP at 120MPH you need two
> GM cores.
Thanks, Ed.....I was relatively certain that it would take two cores....I
was just fishing for that last ray of hope, that there might be a small
frontal radiator or evap. core that could magically do what others have not
been able to do. Proves the old saying....If it sounds too good to be
true....
After putting my bottom cowling in place (several times), and making
cardboard radiator core "dummies", the most practical radiator I came up
with measures 16 x 10 x 3.5 inches overall. C&R Racing said they can make it
for me with only 1 inch tanks, leaving more area for cooling fins. That
would leave a total core area of 14 x 10 x 3.5 inches. That size would fit
in my cowling without modifications, and very minimal effort to build the
plenum. They quoted a cost of $500.00, including mounting two -16 male AN
fittings, one 1/4"npt female drain hole, and mounting brackets as needed for
my installation. It is all aluminum, and no epoxy. The radiator might be a
little small for takeoff and climb?, but might have a chance of cooling 130
or so HP at cruise? A bit pricey, but maybe I can finally put this time
consuming part of the equation behind me and continue getting this thing
ready for flight. The other alternative I have is to have the radiator made
16" x 13" x 3.5", (core area of 14 x 13 x 3.5) but that will take more
effort in trying to get the plenum stuffed in the cowling. Take care. Paul
Conner
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