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Horizontal stab position

 
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malins888(at)gmail.com
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PostPosted: Thu May 14, 2015 5:27 pm    Post subject: Horizontal stab position Reply with quote

My Kolb flew again yesterday, and the test pilot, another Mk3x owner, commented that the leading edge of the horizontal stabilizer appeared to be set too high on the boom. Could someone send me some photos of one correctly fixed. Aussie Tony [quote][b]

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John Hauck



Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

PostPosted: Thu May 14, 2015 5:36 pm    Post subject: Horizontal stab position Reply with quote

Tony:

Can you send us a photo of your horizontal stabilizer?

What was the test pilot's observation of the horizontal stabilizer based on?

Was it, by chance, because the aircraft needs nose up pitch trim?

john h
mkIII
Titus, Alabama

From: owner-kolb-list-server(at)matronics.com [mailto:owner-kolb-list-server(at)matronics.com] On Behalf Of Tony Malins
Sent: Thursday, May 14, 2015 5:27 PM
To: kolb-list(at)matronics.com
Subject: Horizontal stab position


My Kolb flew again yesterday, and the test pilot, another Mk3x owner, commented that the leading edge of the horizontal stabilizer appeared to be set too high on the boom. Could someone send me some photos of one correctly fixed. Aussie Tony
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama
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Richard Pike



Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

PostPosted: Thu May 14, 2015 5:47 pm    Post subject: Re: Horizontal stab position Reply with quote

Dude, I'll do you better than that: here is what's left of the blueprints that tell you exactly where they are supposed to go. The front of the horizontal stab is even with the top of the boom tube.
Caveat: this is for the MKIII Classic.
Parts of the blueprint are missing: the mice got hungry.
True story.


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Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0

Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.


Last edited by Richard Pike on Fri May 15, 2015 10:30 am; edited 1 time in total
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Frankd



Joined: 28 Mar 2008
Posts: 64

PostPosted: Fri May 15, 2015 7:57 am    Post subject: Re: Horizontal stab position Reply with quote

Hi Tony,

Before you change anything, how did the plane fly? I had an issue like this on my MkIII Xtra that made the aircraft unsafe to fly, but if the flight went well on your aircraft maybe there are no changes to be made.

Now, like John H mentioned, if the aircraft needed full up trim then maybe the Horz Stab angle is set incorrectly. But all these planes are a little different to each other and I would review the flight handling first before making any change. Also, make small changes using washers, etc, if you can, until you get it dialed in.
Safe flying.

FrankD
N1014S, MkIIIXtra.


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Rex Rodebush



Joined: 10 Jan 2006
Posts: 209
Location: Branson West area, Missouri

PostPosted: Fri May 15, 2015 9:51 am    Post subject: Re: Horizontal stab position Reply with quote

The L.E. position of the horiz. stab. has been changed several times since the Xtra came out. I set mine per instructions from Brian at TNK and it has worked great. I think it was given in degrees using the motor mounts as a base. He also gave me the wing angle based on the same. I used a digital level. Call Travis or Brian for information.

Rex (will have my 40 hours flown off by this summer)


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PostPosted: Fri May 15, 2015 9:49 pm    Post subject: Horizontal stab position Reply with quote

Thanks for the info Rex. Will do that.
Cheers
Tony On 16/05/2015 12:54 AM, "Rex Rodebush" <jrrodebush(at)gmail.com (jrrodebush(at)gmail.com)> wrote:[quote]--> Kolb-List message posted by: "Rex Rodebush" <jrrodebush(at)gmail.com (jrrodebush(at)gmail.com)>

The L.E. position of the horiz. stab. has been changed several times since the Xtra came out.  I set mine per instructions from Brian at TNK and it has worked great.  I think it was given in degrees using the motor mounts as a base.  He also gave me the wing angle based on the same. I used a digital level.  Call Travis or Brian for information.

Rex  (will have my 40 hours flown off by this summer)




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