REFLECTOR: NACA scoops

Wed Oct 19 23:58:54 CDT 2005

I have some stock armpit scoops around here somewhere that I would be happy
to send you for free; however, I would not recommend using them because I
think that they are not a good design.

Al

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Andrew Ellzey
Sent: Wednesday, October 19, 2005 7:38 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: NACA scoops

Noel,

Thanks for your reply. I know that I will be able to get support from 
Velocity on this issue even with Brendan out of the picture, I am a long way

from this even being an issue, I just thought you sounded like you had dealt

with this issue from reading some of your feed back on the reflector. I 
usually just sit on the sidelines and only read issues that are of interest 
to me at the time. I agree some of the discussions get pretty deep, and I 
wonder how much actual work is being done on their aircraft with as much 
time that is spent talking on the reflector. No one take offense, just a 
observation.

Andy

----- Original Message ----- 
From: <gattenby at gbronline.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Wednesday, October 19, 2005 9:51 PM
Subject: Re: REFLECTOR: NACA scoops

> Andy,
>
> The updraft system used the "armpit" scoops.
> It was used on the oldest versions. It went out of favor
> before the
> XL came out, and before the "standard" became the "elite".
> All of the online manuels are the latest revsions.  If you
> have an older kit without the newer parts they don't help
> much.
> Most of the guys who built planes with armpit scoops are no
> longer following the reflector.  I not sure the factory
> still has the plans
> for the old scoops, but it's fairly likely that they do.
> If they've
> got them it's likly that they would send them to you for
> little to nothing. (they are a good bunch of folks, and they
> are still in the mode of the more velocitys we can get
> flying the more we can sell!)
>
> You can ask the "reflector" in general, but you will get a
> dozen differnt answers.
>
> I just ask for a simple measerment. (2 inches) and got
> almost a dozen replies. From the 2 inches to a discorse on
> calculating airflow through a radiator.
>
> Good luck and happy building
>
> Noel
>
>
>
> ----- Original Message Follows -----
> From: "Andrew Ellzey" <ajlz72756 at yahoo.com>
> To: "Velocity Aircraft Owners and Builders list"
> <reflector at tvbf.org>
> Subject: Re: REFLECTOR: NACA scoops
> Date: Tue, 18 Oct 2005 23:50:51 -0500
>
>> 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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