REFLECTOR: NACA scoops

[Andrew Ellzey]

Noel,

I have purchased a new kit that has the NACA scoops and will probably 
install them on the bottom of my aircraft. I have purchased a IO-540E1A5 
engine, which is a up draft engine. Before Brendan left, he told me that 
there should be room to install the NACA scoops on the bottom of my aircraft 
almost identical to the position that they are on the top. Even though this 
is my plan, I would like to read and look at the instructions for the arm 
pit scoops to decide which would be best. Can you tell me which section of 
the manual and which model of Velocity the arm pits scoops were standard 
equipment?

Andy Ellzey
XL-RG

----- Original Message ----- 
From: "Keith Hallsten" <KeithHallsten at quiknet.com>
To: "'Velocity Aircraft Owners and Builders list'" <reflector at tvbf.org>
Sent: Tuesday, October 18, 2005 10:35 PM
Subject: RE: REFLECTOR: NACA scoops


> Noel,
>
> I would advise getting the pre-molded "runner" expansion ducts that will
> attach to the back of the scoops.  That way you will know exactly the size
> and shape you are aiming for.  I didn't do this on my XL, and today I was
> working on filling the transition to provide for smooth airflow (which is
> pretty critical in the throat of the NACA scoops).  My kit came with the 
> old
> armpit scoops, so I had to cut the roof to create the NACA scoops, too.
> Don't actually attach the "runners" to the scoop at the firewall until you
> can fit them to the engine plenum.
>
> Keith Hallsten
>
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> Behalf Of gattenby at gbronline.com
> Sent: Tuesday, October 18, 2005 8:02 PM
> To: reflector at tvbf.org
> Subject: REFLECTOR: NACA scoops
>
> On an downdraft standard fusalage, how deep are the NACA's?
> I've got cut lines drawn on the top, but I can't find
> instructions on how deep do I make them drop down.
> My kit it old enough that I didn't get the premolded
> inserts.
>
> Noel
> 3SUV103
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