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Newbie questions, which easier to fly a Kitfox or a CH 70

 
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patreilly43(at)hotmail.co
Guest
PostPosted: Mon Apr 27, 2009 2:04 pm    Post subject: Newbie questions, which easier to fly a Kitfox or a CH 70 Reply with quote
Has anyone made their own VG's. They look simple enough to form out of aluminum sheet stock on a little bench break.
 
Pat Reilly
Mod 3 582 Rebuild
Rockford C IL
 
From: noelloveys(at)yahoo.ca
To: kitfox-list(at)matronics.com
Subject: RE: Re: Newbie questions C which easier to fly a Kitfox or a CH 701
Date: Mon C 27 Apr 2009 17:12:43 -0230

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Vortex generators are made by many different firms.  They are used on just about every large aircraft going.  Vortex generators and wing fences are easily seen on the DHC-2  Otter.  The idea is if you can cause tiny vortices to form on the top of the wing then the air passing over the wing will remain intact with the top of the wing at steeper angles of attack giving more lift at slower speeds.   Obviously there is a point of diminishing returns. 
 
The most important factor of installing vortex generators is to find the right spot on the wing chord to place them.  Generally this is around 10% chord but may be as far aft as thickest point of the chord.
 
Dave has installed vortex generators to the bottom of his cowl.  They cause more air to pass through his radiator for better cooling.  Others have put them on the bottom of the horizontal stabs where they give more elevator control in the flare.
 
Noel
 
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Guy Buchanan
Sent: Monday C April 27 C 2009 2:02 AM
To: kitfox-list(at)matronics.com
Subject: Re: Kitfox-List: Re: Newbie questions C which easier to fly a Kitfox or a CH 701


 
At 11:50 AM 4/26/2009 C you wrote:


So vortex generators are made /tested and sold by the Kitfox factory? or is just an aftermarket product?
Is not totally tested yet?

Hi C
        I think I missed your name. Here on the Kitfox list we encourage you to put your full name C location C and aircraft status/type in your signature.
        I think Lowell will tell you that VG's have been rather thoroughly tested on Kitfoxes with little improvement shown. (See the archives for lots of talk and a little data.) What HAS been shown to work is leading edge slats. We had one fellow claim stall speeds in the 20's. What I want to see is someone install the slats made by Turbine Cubs of Wyoming. These are free-floating slats that supposedly dramatically reduce stall speeds while reducing top end very little.
Guy Buchanan C Kitfox List Moderator
San Diego C CA
K-IV 1200 / 582-C / Warp / 300 hrs. and counting
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Float Flyr



Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
PostPosted: Mon Apr 27, 2009 4:48 pm    Post subject: Newbie questions, which easier to fly a Kitfox or a CH 70 Reply with quote
Most are factory made of high density plastic which is easy to stick on. I’m sure you could make them from “T” extrusion. They would be a lot heavier.

Noel

From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of patrick reilly
Sent: Monday, April 27, 2009 7:30 PM
To: kitfox matronics
Subject: RE: Re: Newbie questions, which easier to fly a Kitfox or a CH 701



Has anyone made their own VG's. They look simple enough to form out of aluminum sheet stock on a little bench break.

Pat Reilly
Mod 3 582 Rebuild
Rockford, IL


From: noelloveys(at)yahoo.ca
To: kitfox-list(at)matronics.com
Subject: RE: Re: Newbie questions, which easier to fly a Kitfox or a CH 701
Date: Mon, 27 Apr 2009 17:12:43 -0230
Vortex generators are made by many different firms. They are used on just about every large aircraft going. Vortex generators and wing fences are easily seen on the DHC-2 Otter. The idea is if you can cause tiny vortices to form on the top of the wing then the air passing over the wing will remain intact with the top of the wing at steeper angles of attack giving more lift at slower speeds. Obviously there is a point of diminishing returns.

The most important factor of installing vortex generators is to find the right spot on the wing chord to place them. Generally this is around 10% chord but may be as far aft as thickest point of the chord.

Dave has installed vortex generators to the bottom of his cowl. They cause more air to pass through his radiator for better cooling. Others have put them on the bottom of the horizontal stabs where they give more elevator control in the flare.

Noel

From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Guy Buchanan
Sent: Monday, April 27, 2009 2:02 AM
To: kitfox-list(at)matronics.com
Subject: Re: Re: Newbie questions, which easier to fly a Kitfox or a CH 701



At 11:50 AM 4/26/2009, you wrote:
So vortex generators are made /tested and sold by the Kitfox factory? or is just an aftermarket product?
Is not totally tested yet?

Hi,
I think I missed your name. Here on the Kitfox list we encourage you to put your full name, location, and aircraft status/type in your signature.
I think Lowell will tell you that VG's have been rather thoroughly tested on Kitfoxes with little improvement shown. (See the archives for lots of talk and a little data.) What HAS been shown to work is leading edge slats. We had one fellow claim stall speeds in the 20's. What I want to see is someone install the slats made by Turbine Cubs of Wyoming. These are free-floating slats that supposedly dramatically reduce stall speeds while reducing top end very little.


Guy Buchanan, Kitfox List Moderator
San Diego, CA
K-IV 1200 / 582-C / Warp / 300 hrs. and counting
Quote:
http://www.matronics.com/Navigator?Kitfox-Listhttp://forums.matronics.comhttp://www.matronics.com/contribution >http://www.matronics.com/Navigator?Kitfox-Listronics.com
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats
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