REFLECTOR: NACA's vs Scoops

[Scott Derrick]

I've heard the NACA vs. Scoop debate also.

I will need to get air to an intercooler for my TSIO520 installation.  I
had thought of piping off some of the cooling air from teh top NACA's but
am afraid of not having enough head pressure, or starving the cylinders of
needed cooling air.

I thought of using one of the exisiting armpit scoops that will not be
needed for engine cooling, for the intercooler, but then what do I do with
the other scoop?  It be kinduv lopsided to have one armpit scoop.  Maybe a
very low profile scoop in the middle of the lower cowling?

I also think I will need to increase the capcity of my oil cooler.  My
current thought is to add another cooler inside the cabin below the rear
seat, have a powered fan to drive cabin air through it and have a flapper
valve that directs the exhaust into the cabin heating system or overboard.

Scott

>>>>Thanks to Tim, I came up with a design that I believe will improve on
>>>> his
> work. Time will tell.<<<
>
> I would love to see some pix of your mods if you have any.  I am trying to
> determine the best cooling options now.  One camp thinks the NACA's are
> enough, others insist you must have drop down belly scoops....I, heck, I
> don't know.  I am not even sure where I will place the radiator/heat
> exchangers yet.  .....isn't this fun <g>
>
> All the best,
>
> Chris
>
> Christopher Barber
> Attorney and Counselor at Law
>
> "Serving the needs of Senior Texans"
>
> Barber Law Firm
> 11930 S Sam Houston Pkwy E
> Suite 103
> Houston, Texas 77089-4755
> 281-464-LAWS (5297)
>
>
> CBarber at TexasAttorney.net
> www.TexasAttorney.net <http://www.texasattorney.net/>
>
> Texas <http://www.smileycentral.com/?partner=ZSzeb001>
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>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
> Behalf Of NMFlyer1 at aol.com
> Sent: Tuesday, November 09, 2004 12:28 PM
> To: Velocity Aircraft Owners and Builders list
> Subject: Re: REFLECTOR: Tim England Chevy V6/Water Cooling Video
>
>
> I have a copy of Tim England's tape, and can make more.
>
> He was a big help to me, as there were some things I wanted to do that he
> explained. There were also some things he did that I wanted to change.
> Consider it improving on some steps he already made.
>
> One thing I noticed is that his Velocity was pretty slow. I believe that
> the
> pit scoops, the bottom cowl bump (air to the prop) and the belly scoop all
> added up to more drag than usual.
>
> Thanks to Tim, I came up with a design that I believe will improve on his
> work. Time will tell.
>
> Kurt Winker
> 4.3L Aluminum V-6 340 HP
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