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Newbie questions, which easier to fly a Kitfox or a CH 701

 
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clint_bazzill(at)hotmail.
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PostPosted: Sun Apr 26, 2009 2:57 pm    Post subject: Newbie questions, which easier to fly a Kitfox or a CH 701 Reply with quote

Lowell C



I have done very careful testing with my Kitfox Model IV. I have not done a complete evaluation but will tell you this. My aircraft stalls with vortex generators clean at the same speed with full flaps without. Indicated C calibrated C and gps ground speeds. Also took videos tuffed wing before installing them.



Clint




[quote] From: lcfitt(at)sbcglobal.net
To: kitfox-list(at)matronics.com
Subject: Re: Re: Newbie questions C which easier to fly a Kitfox or a CH 701
Date: Sun C 26 Apr 2009 11:24:23 -0700



Mike C

FYI C and this has been mentioned many times on the list C often by very
careful observers - vortex generators do very little to stall speed
reduction with the Kitfox wing - in most instances not measureable. Control
stability is almost universally reported C but no effect on stall speed.

All this despite what we all know about vortex generators.

I have heard some talk on this and it just might be that the Riblet airfoil
Kitfox uses is not a true airfoil as the design profile only exists at the
fuel tank C rib caps C the false ribs and maybe three inches at the wing tip.
A total of about four feet on each wing. The rest is a different profile
because of the depression due to the fabric shrinking between the ribs and
false ribs. Harry Riblet tells us that the most critical point on this
airfoil is the first five inches. This is exactly where the leading edge
cuff and spar give away to the collapsed fabric. There are several
airplanes currently being built with "D" profile leading edges that will
protect the leading edge shape and these might benefit from vortex
generators. But the proof will be in the testing rather than the hoping.

Lowell

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dave



Joined: 22 Sep 2006
Posts: 1382

PostPosted: Sun Apr 26, 2009 5:41 pm    Post subject: Re: Newbie questions, which easier to fly a Kitfox or a CH Reply with quote

Clint , when you say full flaps - how many degrees is that ?

Early models only got 10 to 15%
IV went past 30 degrees . mine go to 33 degrees and only useful for taking off quicker. I usually land with 20 degrees flaps in full stall 3 pointer


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PostPosted: Sun Apr 26, 2009 8:53 pm    Post subject: Newbie questions, which easier to fly a Kitfox or a CH 701 Reply with quote

The handle is straight up. ? degrees

Clint



Quote:
Subject: Re: Newbie questions C which easier to fly a Kitfox or a CH 701
From: dave(at)cfisher.com
Date: Sun C 26 Apr 2009 18:41:52 -0700
To: kitfox-list(at)matronics.com

--> Kitfox-List message posted by: "dave" <dave(at)cfisher.com>

Clint C when you say full flaps - how many degrees is that ?

Early models only got 10 to 15%
IV went past 30 degrees . mine go to 33 degrees and only useful for taking off quicker. I usually land with 20 degrees flaps in full stall 3 pointer

--------
Rotax Dealer C Ontario Canada
http://www.cfisher.com/
Awesome *New Forum *
http://rotaxaircraft.com/forum/
Realtime Kitfox movies to separate the internet chatter from the truth
http://www.youtube.com/profile_videos?user=kitfoxflyer




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=241384#241384

&gt=====================

[quote] _=====



Quote:
[b]


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dave



Joined: 22 Sep 2006
Posts: 1382

PostPosted: Mon Apr 27, 2009 9:30 am    Post subject: Re: Newbie questions, which easier to fly a Kitfox or a CH Reply with quote

Clint i think some use a limiter on their flapperon handle.
I do not , mine deploy 33 degree when the handle is straight up on Model IV. Works excellent for takes offs but over 20 degrees flapperons are useless for landing plus you lose alot of roll control.
Quote:
[quote="clint_bazzill(at)hotmail."]The handle is straight up. ? degrees

Clint




Quote:
Subject: Re: Newbie questions C which easier to fly a Kitfox or a CH 701
From: dave(at)cfisher.com
Date: Sun C 26 Apr 2009 18:41:52 -0700
To: kitfox-list(at)matronics.com

--> Kitfox-List message posted by: "dave" <dave>

Clint C when you say full flaps - how many degrees is that ?

Early models only got 10 to 15%
IV went past 30 degrees . mine go to 33 degrees and only useful for taking off quicker. I usually land with 20 degrees flaps in full stall 3 pointer

--------
Rotax Dealer C Ontario Canada
http://www.cfisher.com/
Awesome *New Forum *
http://rotaxaircraft.com/forum/
Realtime Kitfox movies to separate the internet chatter from the truth
http://www.youtube.com/profile_videos?user=kitfoxflyer




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=241384#241384

&gt=====================

Quote:
_=====



Quote:
[b]
it


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