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yellowbird1
Joined: 01 Nov 2012
Posts: 88
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 Posted: Thu May 22, 2014 4:46 pm Post subject: Xtra Control Problems |
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Im having some steering and control problems with my Xtra. I havent flown it yet as I have been dealing with various issues. However, a local IP who has quite a lot of time in tail draggers was kind enough to take it for a test flight today. Dennis Kirby gave him a familiarization ride in his MKIII before the flight. I have had problems with the steering before but thought it was due to loose tail wheel springs which have been adjusted. The last time I did a high speed taxi test I had a difficult time keeping it going straight and ran off the side of the runway. However, during todays attempt the IP had the same issues, " I went around the pattern a couple times with Dennis early this morning and felt comfortable enough to take yours out to try a couple touch and goes, but I couldn't keep yours on the runway during the takeoff roll. Three times off to the left and into the dirt, once it even started rolling uncontrollably left after lift-off. I didn't hit anything and the plane is undamaged but it wasn't for lack of trying. There are serious directional-control issues with the bird.There is a trim tab on the rudder that is almost at 90 degrees and another on the elevator that is about the same. There is also a trim tab on the right aileron.
It seems that the wheels must be mis-alined which would explain the tracking issue. However, Im at a loss as the cause of the roll problems, perhaps a wing-incidence problem.
Im getting really tired of it sitting in the hanger and not in the air!
Any suggestions would be greatly appreciated.
Thanks in advance,
Brad Nation
___________________________
Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same, or one day we will spend our sunset years telling our children and our children's children what it was once like in the United States where men were free.
-- President Ronald Reagan
[quote][b]
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Brad Nation,
Albuquerque, NM
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byoungplumbing(at)gmail.c
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| Posted: Thu May 22, 2014 7:43 pm Post subject: Xtra Control Problems |
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Trim tabs at 90 deg.... I don't understand,, tab deflected that far should stall and not work as needed.. or intended.. what is your toe in / out measurements? Duo you know how to get accurate measurements?
Boyd [quote][b]
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Fri May 23, 2014 10:08 am Post subject: Re: Xtra Control Problems |
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Do the basics first: are the wings at the same angle of incidence to each other? Is one of them more forward compared to the other one, is one of them swept back?
Is the engine at the right thrust angle and aligned with the center line of the airplane?
If the answer to all of those questions is yes, it ought to be very flyable, but out of trim. If I remember right, (HAH) with a 582, and no trim tabs, it will want to roll left and yaw right, and with a 912 it is exactly the opposite. Or maybe I've got that backwards... Anyway, that is normal, and easily compensated for during the test flights.
Imagine it being a toy glider and you gently toss it straight ahead - will it continue to go straight ahead, or is it going to immediately turn or roll? You determine all those things by checking the alignment and angle of the various flying surfaces. Checking for uncommanded roll is as easy as taking a couple of long pieces of pvc pipe and strapping them snugly to the underside of each wing, then stand off to one side and look at it - if the pipes are not parallel, you will have a tendency to roll toward the side that has the down pointed pipe.
As far as not wanting to stay on the runway - are the wheels aligned with each other and with the center line of the airplane? If they are not, you might be able to deal with it on a grass strip, but not on asphalt, it will be very squirrely.
I would take the trim tabs off of it, or at least bend them in line with the control surface. A trim tab at 90 degrees to the control surface is non-functional, and probably very counterproductive; you have no idea what it might do or what your results might be, but they would probably not be good. I would not consider flying an airplane with a trim tab at 90 degrees. All that tells you is that someone else had major trim problems with it, and didn't know what he was doing as he started trying to fix it, because a trim tab at 90 degrees is nothing but a spoiler. And since it is a spoiler mounted to a movable surface, all bets are off.
In any event, I would not consider flying it again until you are satisfied that all the control and flying surfaces are aligned properly. Also - and don't take this wrong, get a couple of friends who have homebuilt experience or have built flying model airplanes to oversee your measurements. It is easy to overlook simple things. Someone with a good eye for spotting angles and alignments or something that just doesn't look right is invaluable at a time like this.
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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. |
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byoungplumbing(at)gmail.c
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| Posted: Fri May 23, 2014 10:55 am Post subject: Xtra Control Problems |
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Richard I think you got it all right.
I would add to check the alignment of the landing gear, get a straight
edge (board, pipe, angle, etc.) something that you can mount to the back of
each wheel at axel height,,,, then using a carpenter square, align one
side with the strait edge and measure to the front and back of the rims side
along the second side of the square, I don’t know what type of landing
gear legs you have or how flexible or ridged they are, so my rule of
thumb is,,,, the stiffer the gear legs are the closer to neutral the
wheels should be,,, with more spring in the gear you may need a bit more
toe in. what you need when you are finished is wheels that are straight
when you are rolling forward at speed. and that is something you learn by
feel/ trial and error,,, unless someone with the same gear has done the
work and will share with you. a while back I determined that I had too
much toe in and took it out to neutral. big mistake,,, it was worse than
when I started,,, had to end up putting some back in to make it track
straight. I have the solid tapered steel legs that kolb sold for a while
and ended up needing 0.6 deg toe in per side to make it roll smoothly....
different gear, different toe in. when you get it right it will surprise
you how easy it is to track down the runway.
check the archives,, I had posted some time ago, in fairly good detail,
how I got my gear tracking good.
boyd young
In any event, I would not consider flying it again until you are satisfied
that all the control and flying surfaces are aligned properly. Also - and
don't take this wrong, get a couple of friends who have homebuilt experience
or have built flying model airplanes to oversee your measurements. It is
easy to overlook simple things. Someone with a good eye for spotting angles
and alignments or something that just doesn't look right is invaluable at a
time like this.
--------
Richard Pike
---
This email is free from viruses and malware because avast! Antivirus protection is active.
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gajindra(at)sbcglobal.net
Guest
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| Posted: Fri May 23, 2014 6:41 pm Post subject: Xtra Control Problems |
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The tall landing gear from Kolb can be installed on the wrong side. They are marked R and L. If installed backwards they would mess up ground roll on asphalt
GaryJindra
Mark 3C
912 80hp
215 hrs.   ;
On Friday, May 23, 2014 2:54 PM, b young <byoungplumbing(at)gmail.com> wrote:
--> Kolb-List message posted by: "b young" <byoungplumbing(at)gmail.com (byoungplumbing(at)gmail.com)>
Richard I think you got it all right.
I would add to check the alignment of the landing gear, get a straight
edge (board, pipe, angle, etc.) something that you can mount to the back of
each wheel at axel height,,,, then using a carpenter square, align one
side with the strait edge and measure to the front and back of the rims side
along the second side of the square, I don’t know what type of landing
gear legs you have or how flexible or ridged they are, so my rule of
thumb is,,,, the stiffer the gear legs are the closer to neutral the
wheels should be,,, with more spring in the gear you may need a bit more
toe in. what you need when you are finished is wheels that are straight
when you are rolling forward at speed. and that is something you learn by
feel/ trial and error,,, unless someone with the same gear has done the
work and will share with you. a while back I determined that I had too
much toe in and took it out to neutral. big mistake,,, it was worse than
when I started,,, had to end up putting some back in to make it track
straight. I have the solid tapered steel legs that kolb sold for a while
and ended up needing 0.6 deg toe in per side to make it roll smoothly....
different gear, different toe in. when you get it right it will surprise
you how easy it is to track down the runway.
check the archives,, I had posted some time ago, in fairly good detail,
how I got my gear tracking good.
boyd young
In any event, I would not consider flying it again until you are satisfied
that all the control and flying surfaces are aligned properly. Also - and
don't take this wrong, get a couple of friends who have homebuilt experience
or have built flying model airplanes to oversee your measurements. It is
easy to overlook simple things. Someone with a good eye for spotting angles
and alignments or something that just doesn't look right is invaluable at a
time like this.
--------
Richard Pike
---
This email is free from viruses and malware because avast! Antivirus protection is active.
http://forums.matronics ; --> [quote][b]
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yellowbird1
Joined: 01 Nov 2012
Posts: 88
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| Posted: Fri May 23, 2014 6:51 pm Post subject: Xtra Control Problems |
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That seems to be the consensus of everyone who looks at the tabs, more drag than anything else. As for the toe in/out, no, not yet. Suggestions?
Brad
On May 22, 2014, at 21:43 , B Young <byoungplumbing(at)gmail.com (byoungplumbing(at)gmail.com)> wrote:
| Quote: |
Trim tabs at 90 deg.... I don't understand,, tab deflected that far should stall and not work as needed.. or intended.. what is your toe in / out measurements? Duo you know how to get accurate measurements?
Boyd | Quote: |
href="http://www.matronics.com/Navigator?Kolb-List">http://www.matronics.com/Navigator?Kolb-List
href="http://forums.matronics.com/">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
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Brad
___________________________
Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same, or one day we will spend our sunset years telling our children and our children's children what it was once like in the United States where men were free.
-- President Ronald Reagan
[quote][b]
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Brad Nation,
Albuquerque, NM
MK3 Xtra |
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yellowbird1
Joined: 01 Nov 2012
Posts: 88
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| Posted: Fri May 23, 2014 7:08 pm Post subject: Xtra Control Problems |
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The thing is that it seemed to fly just fine when I flew with the previous owner before I bought it. About a month later after its annual I then trailered it back to Albuquerque from Plano Texas. So I dont understand how it got to its present condition.
Yellow Bird 1
Brad Nation
MKIII Xtra
N952DK
On May 23, 2014, at 20:41 , GARY JINDRA <gajindra(at)sbcglobal.net (gajindra(at)sbcglobal.net)> wrote:
| Quote: | The tall landing gear from Kolb can be installed on the wrong side. They are marked R and L. If installed backwards they would mess up ground roll on asphalt
GaryJindra
Mark 3C
912 80hp
215 hrs. ;
On Friday, May 23, 2014 2:54 PM, b young <byoungplumbing(at)gmail.com (byoungplumbing(at)gmail.com)> wrote:
--> Kolb-List message posted by: "b young" <byoungplumbing(at)gmail.com (byoungplumbing(at)gmail.com)>
Richard I think you got it all right.
I would add to check the alignment of the landing gear, get a straight
edge (board, pipe, angle, etc.) something that you can mount to the back of
each wheel at axel height,,,, then using a carpenter square, align one
side with the strait edge and measure to the front and back of the rims side
along the second side of the square, I dont know what type of landing
gear legs you have or how flexible or ridged they are, so my rule of
thumb is,,,, the stiffer the gear legs are the closer to neutral the
wheels should be,,, with more spring in the gear you may need a bit more
toe in. what you need when you are finished is wheels that are straight
when you are rolling forward at speed. and that is something you learn by
feel/ trial and error,,, unless someone with the same gear has done the
work and will share with you. a while back I determined that I had too
much toe in and took it out to neutral. big mistake,,, it was worse than
when I started,,, had to end up putting some back in to make it track
straight. I have the solid tapered steel legs that kolb sold for a while
and ended up needing 0.6 deg toe in per side to make it roll smoothly....
different gear, different toe in. when you get it right it will surprise
you how easy it is to track down the runway.
check the archives,, I had posted some time ago, in fairly good detail,
how I got my gear tracking good.
boyd young
In any event, I would not consider flying it again until you are satisfied
that all the control and flying surfaces are aligned properly. Also - and
don't take this wrong, get a couple of friends who have homebuilt experience
or have built flying model airplanes to oversee your measurements. It is
easy to overlook simple things. Someone with a good eye for spotting angles
and alignments or something that just doesn't look right is invaluable at a
time like this.
--------
Richard Pike
---
This email is free from viruses and malware because avast! Antivirus protection is active.
[url=http:/=]http://forums.matronics ; --> [/url] href="http://www.matronics.com/Navigator?Kolb-List">http://www.matronics.com/Navigator?Kolb-List href="http://forums.matronics.com/">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
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[quote][b]
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Brad Nation,
Albuquerque, NM
MK3 Xtra |
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johngilpin
Joined: 23 Mar 2011
Posts: 93
Location: 004
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| Posted: Fri May 23, 2014 11:50 pm Post subject: Xtra Control Problems |
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By chance, did those trim tabs get bent to that ridiculous angle during trailering??
Bend them straight with the control surface and see what it feels like, then start adjusting from there.....
JG
[quote][b]
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rowedenny
Joined: 09 Mar 2008
Posts: 338
Location: Western PA
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| Posted: Sat May 24, 2014 3:42 am Post subject: Xtra Control Problems |
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Bingo John, but I'd bend them back to 15 to 30 degrees instead of going all the way straight, probably be in the ball park.
Dennis "Skid" RoweMk3, 690L-70, Leechburg, PA
On May 24, 2014, at 3:50 AM, JC Gilpin <j.gilpin(at)bigpond.com (j.gilpin(at)bigpond.com)> wrote:
[quote]By chance, did those trim tabs get bent to that ridiculous angle during trailering??
Bend them straight with the control surface and see what it feels like, then start adjusting from there.....
JG
[b]
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Sat May 24, 2014 9:18 pm Post subject: Xtra Control Problems |
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Brad, I posted the Kolb drawing for the recommended trim tabs recently. I've attached it to this post, too.What tail wheel do you have?
Rick Girard
do not archive
On Fri, May 23, 2014 at 9:51 PM, Brad Nation <nationcap(at)comcast.net (nationcap(at)comcast.net)> wrote:
| Quote: | That seems to be the consensus of everyone who looks at the tabs, more drag than anything else. As for the toe in/out, no, not yet. Suggestions?
Brad
On May 22, 2014, at 21:43 , B Young <byoungplumbing(at)gmail.com (byoungplumbing(at)gmail.com)> wrote:
| Quote: |
Trim tabs at 90 deg.... I don't understand,, tab deflected that far should stall and not work as needed.. or intended.. what is your toe in / out measurements? Duo you know how to get accurate measurements?
Boyd
|
Brad
___________________________
“Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same, or one day we will spend our sunset years telling our children and our children's children what it was once like in the United States where men were free.”
-- President Ronald Reagan
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Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
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yellowbird1
Joined: 01 Nov 2012
Posts: 88
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| Posted: Fri May 30, 2014 6:07 pm Post subject: Xtra Control Problems |
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I understand how to measure the wheel alignment but what I dont understand is how to change the alignment.
Yellow Bird 1
Brad Nation
MKIII Xtra
N952DK
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Albuquerque, NM
MK3 Xtra |
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Fri May 30, 2014 8:14 pm Post subject: Xtra Control Problems |
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I use a 6' length of galvanized water pipe that just slips
over the axle. Very easy to bend the axle to get the
results you are looking for.
john h
mkIII
Rock House, Burns Junction, OR
I understand how to measure the wheel alignment but what I
don't understand is how to change the alignment.
Yellow Bird 1
Brad Nation
MKIII Xtra
N952DK
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John Hauck
MKIII/912ULS
hauck's holler
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racerjerry
Joined: 15 Dec 2009
Posts: 202
Location: Deer Park, NY
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| Posted: Sat May 31, 2014 4:07 am Post subject: Re: Xtra Control Problems |
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| Quote: | | The thing is that it seemed to fly just fine when I flew with the previous owner before I bought it. About a month later after it�s annual I then trailered it back to Albuquerque from Plano Texas. So I don�t understand how it got to its present condition. |
Were you flying off a grass field at the time? Wheel alignment is not at all critical on grass.
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yellowbird1
Joined: 01 Nov 2012
Posts: 88
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| Posted: Sat May 31, 2014 5:36 am Post subject: Xtra Control Problems |
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Grass taxi area, paved runway.
Sent from my iPad
Brad
| Quote: | On May 31, 2014, at 6:07, "racerjerry" <gki(at)suffolk.lib.ny.us> wrote:
> The thing is that it seemed to fly just fine when I flew with the previous owner before I bought it. About a month later after it�s annual I then trailered it back to Albuquerque from Plano Texas. So I don�t understand how it got to its present condition.
Were you flying off a grass field at the time? Wheel alignment is not at all critical on grass.
--------
Jerry King
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424099#424099
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Brad Nation,
Albuquerque, NM
MK3 Xtra |
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williamtsullivan(at)att.n
Guest
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| Posted: Sat May 31, 2014 7:49 am Post subject: Xtra Control Problems |
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I had an odd thought. Did you check to see if the wings have multiple attachment holes at the front? Are they both in the same hole? Sometimes it's the simplest things that can screw you up.
Bill Sullivan
--------------------------------------------
On Sat, 5/31/14, racerjerry <gki(at)suffolk.lib.ny.us> wrote:
Subject: Re: Xtra Control Problems
To: kolb-list(at)matronics.com
Date: Saturday, May 31, 2014, 8:07 AM
"racerjerry" <gki(at)suffolk.lib.ny.us>
> The thing is that it seemed to fly just fine when I
flew with the previous owner before I bought it. About a
month later after it�s annual I then trailered it back
to Albuquerque from Plano Texas. So I don�t understand
how it got to its present condition.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424099#424099
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byoungplumbing(at)gmail.c
Guest
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| Posted: Sat May 31, 2014 9:17 am Post subject: Xtra Control Problems |
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I bent mine with my son's pipe bender... an exhaust fabrication s shop may have something,, you need to be able to measure in fractions of deg. It is touchy as you have to bend past Weber you need and let it spring back to where you need it.. it takes several trys to find the point where the bend stays put On May 30, 2014 7:10 PM, "Brad Nation" <nationcap(at)comcast.net (nationcap(at)comcast.net)> wrote:[quote] --> Kolb-List message posted by: Brad Nation <nationcap(at)comcast.net (nationcap(at)comcast.net)>
I understand how to measure the wheel alignment but what I don’t understand is how to change the alignment.
Yellow Bird 1
Brad Nation
MKIII Xtra
N952DK
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Tue Jun 03, 2014 6:30 pm Post subject: Xtra Control Problems |
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I posted a msg recently, how to straighten axles on Kolbs. Not gear legs though. I straighten gear legs using a hydraulic press.
Axles are straightened by jacking up the wheel, removing it, and using a 5/8" ID water pipe, or whatever diameter the axle is, about 6' long, slip it over the axle until it bottoms out. Proceed to bend the axle where you want it. Will have to go a little past where you want it bent to get the job done. It is very easy to do, costs nothing, and one can bend the axle any one of 360 degrees.
Toe in/toe out, bend the axle. Camber, bend the axle.
Straight axles on trucks have been bent to align for years. Nothing new here. 
john h
mkIII
Rock House, near Burns Junction, Oregon
From: owner-kolb-list-server(at)matronics.com [mailto:owner-kolb-list-server(at)matronics.com] On Behalf Of Brad Nation
Sent: Tuesday, June 03, 2014 7:59 PM
To: Kolb-list
Subject: Fwd: Re: Xtra Control Problems
I measured the alignment and the left is 1/8 toe out and the right is 3/8 toe out. I have replaced the right axel as it was bent. I don’t know if that has anything to do with the difference in alignment.
Are your landing gear the straight ones or the bent ones, which is what I have. Bend the landing gear seems a little drastic. I’ve been told by an A&P to use shims in the same manner as they do Cessnas.
Brad
On May 31, 2014, at 11:16 , B Young <byoungplumbing(at)gmail.com (byoungplumbing(at)gmail.com)> wrote:
<![if !supportLineBreakNewLine]><![endif]>
I bent mine with my son's pipe bender... an exhaust fabrication s shop may have something,, you need to be able to measure in fractions of deg. It is touchy as you have to bend past Weber you need and let it spring back to where you need it.. it takes several trys to find the point where the bend stays put
On May 30, 2014 7:10 PM, "Brad Nation" <nationcap(at)comcast.net (nationcap(at)comcast.net)> wrote:
--> Kolb-List message posted by: Brad Nation <nationcap(at)comcast.net (nationcap(at)comcast.net)>
I understand how to measure the wheel alignment but what I don’t understand is how to change the alignment.
Yellow Bird 1
Brad Nation
MKIII Xtra
N952DK
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-Matt Dralle, List Admin.
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John Hauck
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Tue Jun 03, 2014 7:16 pm Post subject: Xtra Control Problems |
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Brad, Clearly, the A & P you are talking to knows NOTHING about how Kolb landing gear are built. The axles on Cessnas are bolted to the landing gear, hence the shimming recommendation. On both the aluminum and steel Kolb gear legs are inserted into a tube weldment and a single bolt pins them in place. As for bending the axles to bring the wheels into the toe in/out specification you want, remove the axle from the aircraft and bend it in a press using the TLAR method until it is where you want it. Kolb fuselages are built too light to do the bending on the aircraft.
Alternatively, if the error is as small as you have measured, you can remove the AN 4 bolt the holds the gear leg in its socket, rotate the gear leg into alignment using the ground rod method specified by Richard Pike and others, clamp the tubing socket with a large "C" clamp to grasp the leg so it can't move and drill the hole out to AN 5 or 6. Or you could weld up the hole on the gear leg, anneal the leg by allowing it to cool very slowly, grind it back flush with the gear leg and redrill for the AN 4.
As my dear departed Grandma used to say, "there's more than one way to skin a cat".
No offense to any animal rights activists. :-}
Rick Girard
On Tue, Jun 3, 2014 at 9:30 PM, John Hauck <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)> wrote:
| Quote: |
I posted a msg recently, how to straighten axles on Kolbs. Not gear legs though. I straighten gear legs using a hydraulic press.
Axles are straightened by jacking up the wheel, removing it, and using a 5/8" ID water pipe, or whatever diameter the axle is, about 6' long, slip it over the axle until it bottoms out. Proceed to bend the axle where you want it. Will have to go a little past where you want it bent to get the job done. It is very easy to do, costs nothing, and one can bend the axle any one of 360 degrees.
Toe in/toe out, bend the axle. Camber, bend the axle.
Straight axles on trucks have been bent to align for years. Nothing new here.
john h
mkIII
Rock House, near Burns Junction, Oregon
From: owner-kolb-list-server(at)matronics.com (owner-kolb-list-server(at)matronics.com) [mailto:owner-kolb-list-server(at)matronics.com (owner-kolb-list-server(at)matronics.com)] On Behalf Of Brad Nation
Sent: Tuesday, June 03, 2014 7:59 PM
To: Kolb-list
Subject: Fwd: Re: Xtra Control Problems
I measured the alignment and the left is 1/8 toe out and the right is 3/8 toe out. I have replaced the right axel as it was bent. I don’t know if that has anything to do with the difference in alignment.
Are your landing gear the straight ones or the bent ones, which is what I have. Bend the landing gear seems a little drastic. I’ve been told by an A&P to use shims in the same manner as they do Cessnas.
Brad
On May 31, 2014, at 11:16 , B Young <byoungplumbing(at)gmail.com (byoungplumbing(at)gmail.com)> wrote:
I bent mine with my son's pipe bender... an exhaust fabrication s shop may have something,, you need to be able to measure in fractions of deg. It is touchy as you have to bend past Weber you need and let it spring back to where you need it.. it takes several trys to find the point where the bend stays put
On May 30, 2014 7:10 PM, "Brad Nation" <nationcap(at)comcast.net (nationcap(at)comcast.net)> wrote:
--> Kolb-List message posted by: Brad Nation <nationcap(at)comcast.net (nationcap(at)comcast.net)>
I understand how to measure the wheel alignment but what I don’t understand is how to change the alignment.
Yellow Bird 1
Brad Nation
MKIII Xtra
N952DK
===========
" target="_blank">http://www.matronics.com/Navigator?Kolb-List
===========
MS -
k">http://forums.matronics.com
===========
e -
-Matt Dralle, List Admin.
t="_blank">http://www.matronics.com/contribution
===========
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Wed Jun 04, 2014 4:53 am Post subject: Xtra Control Problems |
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Rick G/Kolbers:
Kolb fuselages are not too light to do the bending on the aircraft.
Mine got bent out of alignment on the fuselage, as they got bent back into alignment on the fuselage.
john h
mkIII
Rock House, Oregon - KISS
As for bending the axles to bring the wheels into the toe in/out specification you want, remove the axle from the aircraft and bend it in a press using the TLAR method until it is where you want it. Kolb fuselages are built too light to do the bending on the aircraft.
As my dear departed Grandma used to say, "there's more than one way to skin a cat".
No offense to any animal rights activists. :-}
Rick Girard
[quote] [b]
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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yellowbird1
Joined: 01 Nov 2012
Posts: 88
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| Posted: Thu Jun 05, 2014 7:00 pm Post subject: Xtra Control Problems |
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I think they go where the wheel bolts to the axel. I talked with Kolb today about the alignment and shims and they dont think that would work as Cessna landing gear and axels are different than the Kolb. They also gave me some more things to check and said basically to take my time and get used to the Kolb and its lack of weight compared to GA and two the Interstate, which is what I got my tail dragger endorsement in and what my IP flys, one of among his 5 other planes (must be nice).
Brad
___________________________
Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same, or one day we will spend our sunset years telling our children and our children's children what it was once like in the United States where men were free.
-- President Ronald Reagan
On Jun 3, 2014, at 21:44 , B Young <byoungplumbing(at)gmail.com (byoungplumbing(at)gmail.com)> wrote:
[quote]
Send me a photo of your gear. I can't think off a place where you could add shims.
Do not archive
Boyd On Jun 3, 2014 7:01 PM, "Brad Nation" <nationcap(at)comcast.net (nationcap(at)comcast.net)> wrote: | Quote: | I measured the alignment and the left is 1/8 toe out and the right is 3/8 toe out. I have replaced the right axel as it was bent. I dont know if that has anything to do with the difference in alignment.
Are your landing gear the straight ones or the bent ones, which is what I have. Bend the landing gear seems a little drastic. Ive been told by an A&P to use shims in the same manner as they do Cessnas.
Brad
On May 31, 2014, at 11:16 , B Young <byoungplumbing(at)gmail.com (byoungplumbing(at)gmail.com)> wrote:
href="http://www.matronics.com/Navigator?Kolb-List">http://www.matronics.com/Navigator?Kolb-List
href="http://forums.matronics.com/">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
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