One more shot with gear doors shut.
Greg

----- Original Message ----- From: "Thomas Giddings" <tom@midwestaviation.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, March 25, 2011 4:54 AM
Subject: [FlyRotary] Re: intersting video


Greg: I also thought about the P51 style scoop. I do think it is a
great
idea. I have a landing gear that retracts into the fuselage and
there really
is not much room for a belly scoop. Could you post some Pics of
how you did
this. How Big is the Radiator and scoop and where did you place
the oil
cooler. By the way if any of you are at Sun N Fun next week .
Please stop by
and say Hi. I will be in Building A booth 67 all week. I plan on
getting out
and looking at some flying examples if possible. and maybe  see
some of you
folks then.

Tom Giddings

On Mar 25, 2011, at 12:43 AM, Greg Ward wrote:

> Hey Tom;
> We looked at this scenario when we were laying out our Legacy,
and
> determined that it was packing too much into a cowling that
already had a
> large intercooler, and a turbo that was guaranteed to be
radiating about
> 1400 to 1900 degrees of heat.  So, the question was, where to
put a
> radiator, oil cooler, etc. outside of the cowling?  We settled
on a P-51
> scoop for both, and built it exactly like the original, hoping
for a
> little thrust return.  Difference was, we kept the radiator out
of the
> fuselage, because we didn't want a leak in the cockpit at 20+K
feet, with
> all that entails.  We are also looking at installing a hot water
heating
> system, with valves both in and out for the very same reasons.
So, what
> we have left is, the engine, intercooler, turbo, and whatever
goes on the
> firewall, with a lot of air going through, to hopefully keep
everything
> happy.  The flaps on the scoop should enable us to keep temps
under
> control, a' la P-51, so we'll see.
>
> Greg Ward
> Lancair Legacy N178RG, Still in progress
>
>
> ----- Original Message ----- From: "Thomas Giddings"
> <tom@midwestaviation.net>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Thursday, March 24, 2011 8:59 PM
> Subject: [FlyRotary] intersting video
>
>
> Here is a youtube engine test run of an LS1 V8. Watch it long
enough to
> see how the dual radiators are plumbed. This system for engine
cooling
> includes two radiators which appear to be in series. It  seems
to be going
> from the thermostat housing to the top of the first radiator
then is taken
> out the bottom of the first one and crosses over to number two
at the top
> inlet and back out the bottom into the pump and back through the
block
> .They are both dual pass radiators . They feed this air from two
outside
> the cowl scoops. Bud Warren claims this cools very well. In fact
he claims
> it is the only way to cool the 300HP LS1 V8's . I wanted to
original
> install a LS3 into my Questair, but could quite get it stuffed
in there .
> http://www.youtube.com/watch?v=CUSbOAZRRtg. If this link does
not work
> search youtube for Franks Bearhawk Test run. Incidently they
claim they
> need 1256 Sq In of radiator surface to keep the V8 running at
190 in
> cruise and 200 max in the climb. Also if you to geared drives
yahoo forum
> there is a very interesting read on the subject on cooling
requirements
> for the LS1.
>
> Tom Giddings
> VP Avionics Sales
> MIDWEST AVIONICS
> 200 Hardy Roberts Dr
> PO Box 219
> West Paducah,KY 42086
> 877-904 9966
> Cell; 727 858-1772
> FAX:270 744 3466
> tom@midwestaviation.net
> Online Store
> www.midwest-avionics.com
>
> <Image00010.jpg><P1010273.jpg><Mail Attachment.txt>


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