Today's Message Index:
----------------------
0. 12:10 AM - Please Make A List Contribution Today; Some Nice Comments... (Matt Dralle)
1. 05:34 AM - Re: More info on tailwheel 4130 tube needed... (Dennis Rowe)
2. 06:02 AM - Re: More info on tailwheel 4130 tube needed... (John Hauck)
3. 06:08 AM - Re: More info on tailwheel 4130 tube needed... (Larlaeb)
4. 07:18 AM - Landing gear update (Lee)
5. 07:29 AM - Re: Xtra Steering Problems (Rick Neilsen)
6. 08:16 AM - Re: Xtra Steering Problems (james.vanlaak@gmail.com)
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Subject: | Please Make A List Contribution Today; Some Nice Comments... |
Dear Listers,
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Matronics Email List Administrator
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Message 1
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Subject: | Re: More info on tailwheel 4130 tube needed... |
That is a surprisingly thick wall for that little 3/4 inch rod! =F0=9F=98=B3
Dennis "Skid" Rowe
Mk3, 690L-70, Leechburg, PA
> On Nov 12, 2013, at 8:32 PM, "John Hauck" <jhauck@elmore.rr.com> wrote:
>
>
> A little while back a couple folks talked about replacing the Aluminum tai
l wheel tube with a piece of 4130 steel. I talked to my local shop and they w
ant to know what wall thickness is being used and they are unsure about the H
ardness available, but would see what they could get
>
> Any additional information would be much appreciated !
>
> Thanks,
>
> Nick
>
>
>
> Nick:
>
> .120 wall thickness. Heat treat to 48RC. Heat treating should be done af
ter all welding, drilling, etc.
>
> The length of the tail wheel strut can be reduced by about a half of whate
ver the plans call for.
>
> Don't know why Homer liked the tail wheel strut so long.
>
> john h
> mkIII
> Titus, Alabama
>
>
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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Message 2
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Subject: | More info on tailwheel 4130 tube needed... |
That is a surprisingly thick wall for that little 3/4 inch rod!
=F0=9F=98=B3
Dennis "Skid" Rowe
Mk3, 690L-70, Leechburg, PA
Dennis:
That's what it takes to get the job done on my MKIII.
I also have a plate welded to the end on my tail wheel strut to mimic a
flat tail spring to attach a Maule tail wheel. Works well.
john h
mkIII
Titus, Alabama
Message 3
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Subject: | Re: More info on tailwheel 4130 tube needed... |
Possibly overkill from a strength perspective but there is a lot of twisting force
on that rod/tube when you start shoving the tail around and the bolt that
holds it in tends to wallow out the hole so my take would be that the thicker
stuff helps prevent that a bit.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=412987#412987
Message 4
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Subject: | Landing gear update |
Hi everyone,
I wanted to give an update of how the steel landing gear has been working on
my MKII Twinstar.
I put the hardened steel gear on this spring after several tries of using
the aluminum gear.
(The camber and toe in/out with aluminum gear would be all over the place
depending on if I had a passenger or not which would send me all over the
runway when landing.)
I have about 45 hours on the steel gear and it has been great ! with or
without a passenger, it goes down the runway straight. (much better on a tar
runway also)
My runway is bumpy, uneven and a couple of spots that want to send me back
into the air if I hit them fast enough. The gear has enough spring in it to
handle it well.
(I know it should be smoothed out, but I don't own the land and the farmer
does not want me to do anything to it, I am not going to ruffle any
feathers.)
I had to make new wheel attachment brackets to fit the straight steel legs
so I installed a set of hydraulic mountain bike brakes at the same time.
I am surprised at how good these little brakes hold, I can run it up to nose
over and the brakes still hold. I don't think the pads will last long but
they are only about $8. a set.
I also set it up with two brake handles on the stick, works really well for
turning.
I have included a few pictures of the setup.
don't look to close to the gear paint, it was a quick spray on some paint so
it doesn't rust deal.
Also want to thank everyone for helping me out with the steel leg
conversion.
Lee,
MKII twinstar, CGS hawk classic,
Goldwing, Vector
Lee..
Message 5
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Subject: | Re: Xtra Steering Problems |
Gary/All
Yes the bellcrank is hardened. I found a drill bit for hardened steel at
Production Tool that drilled it with no problems.
Rick Neilsen
Redrive VW Powered MKIIIC
On Tue, Nov 12, 2013 at 7:06 PM, Gary Aman <zeprep251@aol.com> wrote:
> You might have some difficulty drilling that part because it has been
> hardened to reduce wear at the keyway.ate up some good drill bits
>
> Sent from my iPhone
>
> On Nov 12, 2013, at 9:30 AM, Rick Neilsen <neilsenrm@gmail.com> wrote:
>
> Brad
>
> I'm not sure I understand what you are saying. If you were having problem
s
> getting the tail wheel to unlock then I have a better suggestion. The
> problem is that the tail wheel doesn't turn enough to unlock. This can be
> fixed by drilling the tail wheel bellcrank to allow the control chains to
> be attached closer together to effectively increase the turning ratio
> between the rudder and the tail wheel. The optional tail wheel has a much
> longer bellcrank than the stock tail wheel.
>
> The advantage of the compression springs is that they keep the tail wheel
> from a unexpected unlock in cross winds. The above suggestion on modifyin
g
> the tail wheel bellcrank allows you to turn by unlocking the tail wheel
> without having to slam the tail wheel sideways enough to overcome spring
> tension for a tail wheel unlock. This also reduces the ground handling
> sideloading on the tail feathers which has been a problem on older Kolbs.
>
> I did this fix on my MKIIIC years ago and it has worked well.
>
> Rick Neilsen
> Redrive VW Powered MKIIIC
>
>
> On Mon, Nov 11, 2013 at 10:58 PM, Brad Nation <nationcap@comcast.net>wrot
e:
>
>>
>> Thanks for all the suggestions and help. I think I figured out the issu
e
>> with my tail wheel not unlocking as it should. Upon further investigati
on
>> I realized that the issue was that the spring chain assembly that connec
ts
>> the connection bar to the ruder wasn=92t allowing the wheel to turn enou
gh so
>> that the spring pin could retract. The compression springs were from
>> Aircraft Spruce and were too stiff. I replaced them with heavy duty doo
r
>> springs purchased at the local hardware store.(Thanks Dennis Kerby for t
he
>> suggestion.) Unfortunately I was unable to do a taxi test due to wind. B
ut
>> I think it will do the trick.
>>
>> Thanks again,
>>
>> YellowBird 1
>> Kolb MK III Xtra
>>
>> PS: I changed my userid to my Dad=92s call sign when he was flying B-57s
in
>> Vietnam.
>>
>> ==========
>> ="_blank">www.aeroelectric.com
>> ooks.com" target="_blank">www.buildersbooks.com
>> et="_blank">www.homebuilthelp.com
>> et="_blank">www.mypilotstore.com
>> "_blank">www.mrrace.com
>> ="_blank">http://www.matronics.com/contribution
>> le, List Admin.
>> ==========
>> arget="_blank">http://www.matronics.com/Navigator?Kolb-List
>> ==========
>> http://forums.matronics.com
>> ==========
>>
>>
>>
>>
> *
>
> D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D
> ot;">www.aeroelectric.com <http://www.aeroelectric.com>
> books.com <http://books.com>"">www.buildersbooks.com <http://www.builders
books.com>
> quot;">www.homebuilthelp.com <http://www.homebuilthelp.com>
> quot;">www.mypilotstore.com <http://www.mypilotstore.com>
> ">www.mrrace.com <http://www.mrrace.com>
> ot;">http://www.matronics.com/contribution <http://www.matronics.com/cont
ribution>
> D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D
> List"">http://www.matronics.com/Navigator?Kolb-List <http://www.matronics
.com/Navigator?Kolb-List>
> D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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=3D
> //forums.matronics.com <http://forums.matronics.com>
> D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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=3D
> *
>
> *
>
===========
m>
ldersbooks.com>
.com>
com>
om/contribution>
===========
onics.com/Navigator?Kolb-List>
===========
===========
> *
>
>
Message 6
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Subject: | Re: Xtra Steering Problems |
I made an extension for the steering arm on the bottom of the rudder. That
let me drill several holes to vary the ratio till I found what I wanted.
Much easier to do and to adjust as you like.
On Wed, Nov 13, 2013 at 10:29 AM, Rick Neilsen <neilsenrm@gmail.com> wrote:
> Gary/All
>
> Yes the bellcrank is hardened. I found a drill bit for hardened steel at
> Production Tool that drilled it with no problems.
>
> Rick Neilsen
> Redrive VW Powered MKIIIC
>
>
> On Tue, Nov 12, 2013 at 7:06 PM, Gary Aman <zeprep251@aol.com> wrote:
>
>> You might have some difficulty drilling that part because it has been
>> hardened to reduce wear at the keyway.ate up some good drill bits
>>
>> Sent from my iPhone
>>
>> On Nov 12, 2013, at 9:30 AM, Rick Neilsen <neilsenrm@gmail.com> wrote:
>>
>> Brad
>>
>> I'm not sure I understand what you are saying. If you were having
>> problems getting the tail wheel to unlock then I have a better suggestio
n.
>> The problem is that the tail wheel doesn't turn enough to unlock. This c
an
>> be fixed by drilling the tail wheel bellcrank to allow the control chain
s
>> to be attached closer together to effectively increase the turning ratio
>> between the rudder and the tail wheel. The optional tail wheel has a muc
h
>> longer bellcrank than the stock tail wheel.
>>
>> The advantage of the compression springs is that they keep the tail whee
l
>> from a unexpected unlock in cross winds. The above suggestion on modifyi
ng
>> the tail wheel bellcrank allows you to turn by unlocking the tail wheel
>> without having to slam the tail wheel sideways enough to overcome spring
>> tension for a tail wheel unlock. This also reduces the ground handling
>> sideloading on the tail feathers which has been a problem on older Kolbs
.
>>
>> I did this fix on my MKIIIC years ago and it has worked well.
>>
>> Rick Neilsen
>> Redrive VW Powered MKIIIC
>>
>>
>> On Mon, Nov 11, 2013 at 10:58 PM, Brad Nation <nationcap@comcast.net>wro
te:
>>
>>>
>>> Thanks for all the suggestions and help. I think I figured out the
>>> issue with my tail wheel not unlocking as it should. Upon further
>>> investigation I realized that the issue was that the spring chain assem
bly
>>> that connects the connection bar to the ruder wasn=92t allowing the whe
el to
>>> turn enough so that the spring pin could retract. The compression sprin
gs
>>> were from Aircraft Spruce and were too stiff. I replaced them with hea
vy
>>> duty door springs purchased at the local hardware store.(Thanks Dennis
>>> Kerby for the suggestion.) Unfortunately I was unable to do a taxi test
due
>>> to wind. But I think it will do the trick.
>>>
>>> Thanks again,
>>>
>>> YellowBird 1
>>> Kolb MK III Xtra
>>>
>>> PS: I changed my userid to my Dad=92s call sign when he was flying B-57
s
>>> in Vietnam.
>>>
>>> ==========
>>> ="_blank">www.aeroelectric.com
>>> ooks.com" target="_blank">www.buildersbooks.com
>>> et="_blank">www.homebuilthelp.com
>>> et="_blank">www.mypilotstore.com
>>> "_blank">www.mrrace.com
>>> ="_blank">http://www.matronics.com/contribution
>>> le, List Admin.
>>> ==========
>>> arget="_blank">http://www.matronics.com/Navigator?Kolb-List
>>> ==========
>>> http://forums.matronics.com
>>> ==========
>>>
>>>
>>>
>>>
>> *
>>
>> D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D
>> ot;">www.aeroelectric.com <http://www.aeroelectric.com>
>> books.com <http://books.com>"">www.buildersbooks.com <http://www.builder
sbooks.com>
>> quot;">www.homebuilthelp.com <http://www.homebuilthelp.com>
>> quot;">www.mypilotstore.com <http://www.mypilotstore.com>
>> ">www.mrrace.com <http://www.mrrace.com>
>> ot;">http://www.matronics.com/contribution <http://www.matronics.com/con
tribution>
>> D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D
>> List"">http://www.matronics.com/Navigator?Kolb-List <http://www.matronic
s.com/Navigator?Kolb-List>
>> D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D
>> //forums.matronics.com <http://forums.matronics.com>
>> D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D
>> *
>>
>> *
>>
>> _blank">www.aeroelectric.com <http://www.aeroelectric.com>
>> .com" target="_blank">www.buildersbooks.com <http://www.buildersbooks.
com>
>> ="_blank">www.homebuilthelp.com <http://www.homebuilthelp.com>
>> ="_blank">www.mypilotstore.com <http://www.mypilotstore.com>
>> ank">www.mrrace.com <http://www.mrrace.com>
>> _blank">http://www.matronics.com/contribution <http://www.matronics.com/
contribution>
>> get="_blank">http://www.matronics.com/Navigator?Kolb-List <http://www.
matronics.com/Navigator?Kolb-List>
>> tp://forums.matronics.com <http://forums.matronics.com>
>> *
>>
>>
> *
>
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m>
ldersbooks.com>
.com>
com>
om/contribution>
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onics.com/Navigator?Kolb-List>
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> *
>
>
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