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From: "Paul" <sqpilot@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-576101@logan.com>
Subject: Re: [FlyRotary] Re: East Coast Rotary Intake
Date: Tue, 21 Dec 2004 20:04:25 -0600
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Hi, Bob....I have been thinking about possible solutions for the air intake 
as well. I purchased two nice pre-fabricated NACA ducts from Van's RV 
Aircraft. They are made to put in the sides of the fuselage of the RV 
aircraft for cockpit ventilation. They are nice units, with a male extension 
to which you attach your scat or sceet tubing to and run it to your eyeball 
vents.  Totally prefabricated, just use the template provided to cut out the 
NACA shape and rivet or epoxy/glass them into place, attach your hose and 
you are finished. (Did both sides on a Saturday morning on my SQ2000). (They 
also cost less than 20 dollars if I remember correctly).
     I was considering putting one or two of them on the bottom of my cowl 
extensions (essentially wing extensions so that the wing meets the cowling), 
and running the hose or hoses right up to the throttlebody.  Since it is 
under the wing, and in high pressure, it would seem as though it should 
provide cold air to the throttle body, especially since the engine is 
capable of sucking in the air even if there is not a lot of ram effect?
     I was wondering, however about rain....Seems there's not always a 
simple solution.  If I just install two air horns, I will be ingesting the 
air that has gone through the radiator and oil cooler.  Obviously I would 
get more power pulling in outside air compared to warmer cowling air....just 
don't know about the rain factor.  Paul Conner

----- Original Message ----- 
From: "Bob White" <bob@bob-white.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, December 21, 2004 7:46 PM
Subject: [FlyRotary] Re: East Coast Rotary Intake


> Hi Tom,
>
> I still need to work out something for the intake.  Since I'm in New
> Mexico, I need to provide a filtered air source for those occasions when
> there's more sand in the air than oxygen.  We get some pretty heavy rain
> showers also.  I guess I see the main advantage of the ram air is
> getting a little more speed at altitude.
>
> Bob White
>
>
> On Tue, 21 Dec 2004 17:01:06 -0800 (PST)
> Tom <tomtugan@yahoo.com> wrote:
>
>> Bob,
>> If you did get a good ram air setup I'm wondering what the effects of
>> flying thru a good rain shower would be with this setup.   I assume
>> you're talking unfiltered during flight.
>>
>> Tom
>>
>>
>> --- Bob White <bob@bob-white.com> wrote:
>> > Hi Paul,
>> >
>> > It's a straight out design.  Here is a photo of the first one Bruce
>> > made.  I think it was sent to Denmark.  There are some supports not
>> > shown.  Bruce reports that it weighs 6.5 lbs with runner lengths of
>> > 7 inches.  I have also asked Bruce to put the throttle body on the
>> > other end so I can get some ram air into it.
>> >
>> > Bob White (still waiting...maybe next week!)
>> >
>> .
>>
>>
>>
>>
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>>
>>
>
>
> -- 
> http://www.bob-white.com
> N93BD - Rotary Powered BD-4 (soon)
>
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