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Using something like this "ram air" "enhanced induction duct" "located a bit
further away from centerline of prop to get more prop effect" is definitely
"going in the right direction".
David
----- Original Message ----- From: "Kevin Williams" <kevinsky18@hotmail.com>
To: <rv-list@matronics.com>
Sent: Tuesday, May 10, 2005 9:11 AM
Subject: RE: RV-List: RE: To ram air or NOT to ram air -- that is the
question
--> RV-List message posted by: "Kevin Williams" <kevinsky18@hotmail.com>
Has anyone looked at or installed a ram air induction system from Jon
Johanason? http://www.flymore.com.au/
He has some great products and I'm tempted to believe that his ram air
induction might work a touch better then the standard open inlet.
here is a quote from his product site.
"Extensive flight-testing has shown increases in excess of 2 of Manifold
Pressure Recovery at 1,500 and 1" of Manifold Pressure Recovery at 10,000.
These increases are improvements compared to Vans snorkel type induction
(not the rhino horn induction)."
There is actually a full page write up on it on his web site.
kev
From: "Marcus Cooper" <coop85@bellsouth.net>
To: <rv-list@matronics.com>
Subject: RV-List: RE: To ram air or NOT to ram air -- that is the question
Date: Mon, 9 May 2005 18:21:14 -0400 7.50 BARRACUDA_HEADER_FP56
RBL:
Blacklist bl.spamcop [Blocked - see
<http://www.spamcop.net/bl.shtml?68.217.221.11>]
--> RV-List message posted by: "Marcus Cooper" <coop85@bellsouth.net>
Dan,
Great effort and research, pretty slick how your filtered setup
worked
so well. One other thought is based on an experience with my first
airplane, a Q-2/200. A friend of mine experimented with the ram air
aspects
as all the engines were set up that way with some very creative filters (a
t-shirt for example). One thing guys tried was varying lengths of the
inlet
with the focus being on how close to the prop you should get. The closer
you got, the better the performance and the impression was you got a bit
of
a turbo-type boost as the prop went buy. The next step was to align the
prop so you would get the most benefit of the pressure and that was based
on
trying to get a blade past the inlet about the time an intake valve was
about to open. Far from an exact science, but some guys seemed to have
pretty good success with it.
Marcus
RV-10, tailcone well on it's way, QB on the ocean
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