CrownLJ(at)verizon.net
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 Posted: Sat Mar 11, 2006 4:30 am Post subject: Kitfox Handling Problems |
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The absolute best "fix" for the lack of elevator is lead on the tail. The Kitfox CG range is nose heavy even within the range. I have tried to make my Avid mk1V elevator 20% larger, to no avial - yes gap seals too) At the time, I had already moved my CG from10ish to 14ish. I called the designer Dean Wilson, and he told me to move it to the aft limit (which is still safe). I now have the empty cg on the aft limit, people & fuel bring it forward. If I do want to put stuff in the luggage, I simply take off lead weight to compensate. I always land power off 3 point, as close to stall as I am able and still the tail touches 1st. ( I'm trying to change the gear angle now) Try to mount a 5# weight on the tail and go try it - you will like it. From there you can refine it to your liking. I am not suggesting that you EXCEED the aft limit, but it was set as a limit with the idea it would be flown there and the usual saftey margins have been designed with that considered.
Larry
Time: 05:56:41 PM PST US
From: Marco Menezes <msm_9949(at)yahoo.com>
Subject: Re: Kitfox handling problems
Hi Dave,
You might be right. My empty CG is 10.65, within the range (10.2-14.2 but
admittedly toward the front end of it. How does that translate into MAC? In the
Ed Downs book, he describes the stall characteristics of a model 2 exactly like
how mine acts. I thought it was fairly typical for the design so have left
well enough alone.
Aerobatics(at)aol.com wrote:
In a message dated 3/10/2006 12:24:21 P.M. Central Standard Time,
msm_9949(at)yahoo.com writes:
Bradley,
I have gap seals on my Model 2 and it still lacks elevator authority at
"stall" speed. There's really no such thing as a flare or "full stall" landing
in
my 2. Not at all like I was used to in Cessnas or even Cubs. It's more like
a "full mush" landing. This resulted in alot of spectacular bounces at first
until someone on the list suggested carring more speed into touchdown. Now,
if I touch down at 45 or so ( indicated) there's no bounce at all. Haven't
tried using flaps to increase glide angle, slips seem to work pretty good for
that. I though the flaps on Models 1-3 were more for trim than anything else.
Hi I have a 2 as well, sealing the gaps made a huge difference for me. You
might want to check your CG. Like you I ran out of elevator on flare.... I
believe empty my CG is at 27% MAC. you may be just a tad nose heavy
Best,
Dave Patrick KF2
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