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MK 111 rebuild
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pipercolt

Joined: 08 Jan 2012
Posts: 46
Location: Randolph New York

Posted: Wed Apr 08, 2015 5:33 pm Post subject: MK 111 rebuild

I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. I also bought a set of steel gear legs but they don't look like they will fit. The aluminum ones are same size all the way up inside the tubing on the cage but the steel ones have 2 collars around them and are considerably smaller in diameter where they exit the cage. Are they not for a MK 111?

Thanks

Bob

John Hauck

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

Posted: Wed Apr 08, 2015 6:08 pm Post subject: MK 111 rebuild

Bob:



You can post a photo to this page.



Sounds like some gear legs Old Kolb Co came up with after Jim and I started

experimenting and using 4130 legs on my Firestar and MKIII.



Yes, tapered legs were designed for the MKIII.  Doubt they will work on your

Kolbra.



Call Travis Brown at Kolb Co.  He can fix you up with the correct gear legs.



john h

mkIII

Titus, Alabama



--

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

Richard Pike

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

Posted: Thu Apr 09, 2015 3:45 am Post subject: Re: MK 111 rebuild

 	  pipercolt wrote: 	
		  I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. I also bought a set of steel gear legs but they don't look like they will fit. The aluminum ones are same size all the way up inside the tubing on the cage but the steel ones have 2 collars around them and are considerably smaller in diameter where they exit the cage. Are they not for a MK 111?

Thanks

Bob 	




If they look like this, then yes, they are for a MKIII. I am using them now.

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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.

Dennis Kirby

Joined: 05 Dec 2013
Posts: 35
Location: Albuquerque, NM

Posted: Thu Apr 09, 2015 5:19 am Post subject: MK 111 rebuild

From: "pipercolt" <bob.pipercolt(at)yahoo.com>

I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. I also bought a set of steel gear legs but they don't look like they will fit. The aluminum ones are same size all the way up inside the tubing on the cage but the steel ones have 2 collars around them and are considerably smaller in diameter where they exit the cage. Are they not for a MK 111?

Thanks

Bob

Dennis Kirby

Joined: 05 Dec 2013
Posts: 35
Location: Albuquerque, NM

Posted: Thu Apr 09, 2015 5:28 am Post subject: MK 111 rebuild

"pipercolt" wrote:  << I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. ... >> Thanks Bob



Bob -



Install your Matco brakes so that the brake unit is positioned in such a way that the filler nipple is pointing upward.  That will make filling your brakes with fluid MUCH easier.  To keep the nipple clean and free of dirt, I put a little plastic cover on mine - the kind you find at hardware stores called "thread protectors."  They come in different sizes & colors.  The red one (for a 1/4 inch bolt) is what fits on the filler nipple.



Dennis Kirby

Mark-3, 300 hrs TT

Sandia Park, NM

pipercolt

Joined: 08 Jan 2012
Posts: 46
Location: Randolph New York

Posted: Thu Apr 09, 2015 5:31 am Post subject: Re: MK 111 rebuild

Hi Guys

Thanks for the replies. Yes Dennis, those are the legs that I have.

Bob

neilsenrm(at)gmail.com
Guest

Posted: Thu Apr 09, 2015 7:18 am Post subject: MK 111 rebuild

I also have the tapered spring steel landing gear that Richard posted photos of. Old Kolb developed these gear legs. When Old Kolb built them they welded a tubular extension on the nub at the 31 inch (from Richard's second photo) part of the gear legs. This extension carried the landing load further up into gear socket in the fuselage cage.

When I installed these gear legs on my MKIIIC I slipped a 4130 steel tube over the gear legs from the 21 inch measure to app 36 inch measure. The tube is slightly smaller OD than the gear socket ID. I had to grind the nub at the 31 inch measure down a bit to fit in the reinforcing tube. I would have welded on a extension on like Old Kolb did but was afraid of changing the tempering of the gear legs.

The gear legs are great, very durable with plenty of travel and spring. They are shorter than the newer tubular gear legs but work well for me. You do have to be careful because the spring in the gear will bounce you back into the air on a bad landing.

Rick Neilsen

Redrive VW Powered MKIIIC

On Thu, Apr 9, 2015 at 7:45 AM, Richard Pike <thegreybaron(at)charter.net (thegreybaron(at)charter.net)> wrote:

[quote]--> Kolb-List message posted by: "Richard Pike" <thegreybaron(at)charter.net (thegreybaron(at)charter.net)>

 pipercolt wrote:

 > I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. I also bought a set of steel gear legs but they don't look like they will fit. The aluminum ones are same size all the way up inside the tubing on the cage but the steel ones have 2 collars around them and are considerably smaller in diameter where they exit the cage. Are they not for a MK 111?

 > Thanks

 > Bob

 If they look like this, then yes, they are for a MKIII. I am using them now.

 --------

 Richard Pike

 Kolb MKIII N420P (420ldPoops)

 Kingsport, TN 3TN0

 There are two kinds of people: those who say to God, 'Thy will be done,' and those to whom God says, 'All right, then, have it your way.'

 Read this topic online here:

 http://forums.matronics.com/viewtopic.php?p=440486#440486

 Attachments:

 http://forums.matronics.com//files/p1050448_large_130.jpg

 http://forums.matronics.com//files/p1050449_large_153.jpg

 ===========

 -List" target="_blank">http://www.matronics.com/Navigator?Kolb-List

 ===========

  FORUMS -

 _blank">http://forums.matronics.com

 ===========

 b Site -

 Â  Â  Â  Â  Â  -Matt Dralle, List Admin.

 target="_blank">http://www.matronics.com/contribution

 ===========

 [b]

rowedenny

Joined: 09 Mar 2008
Posts: 338
Location: Western PA

Posted: Thu Apr 09, 2015 9:08 am Post subject: MK 111 rebuild

I've never heard anyone on this list who has those style legs complain about them and they seem to be super durable.

Having started with the original straight aluminum legs and  switched to the taller bent steel tube legs, I much prefer the look of the taller steel legs.

Do not archive

Dennis "Skid" RoweMk3, Rotax 670, 

Leechburg, PA

On Apr 9, 2015, at 11:17 AM, Rick Neilsen <neilsenrm(at)gmail.com (neilsenrm(at)gmail.com)> wrote:

[quote]I also have the tapered spring steel landing gear that Richard posted photos of. Old Kolb developed these gear legs. When Old Kolb built them they welded a tubular extension on the nub at the 31 inch (from Richard's second photo) part of the gear legs. This extension carried the landing load further up into gear socket in the fuselage cage.

When I installed these gear legs on my MKIIIC I slipped a 4130 steel tube over the gear legs from the 21 inch measure to app 36 inch measure. The tube is slightly smaller OD than the gear socket ID. I had to grind the nub at the 31 inch measure down a bit to fit in the reinforcing tube. I would have welded on a extension on like Old Kolb did but was afraid of changing the tempering of the gear legs.

The gear legs are great, very durable with plenty of travel and spring. They are shorter than the newer tubular gear legs but work well for me. You do have to be careful because the spring in the gear will bounce you back into the air on a bad landing.

Rick Neilsen

Redrive VW Powered MKIIIC

On Thu, Apr 9, 2015 at 7:45 AM, Richard Pike <thegreybaron(at)charter.net (thegreybaron(at)charter.net)> wrote:

 	  Quote: 	
		  --> Kolb-List message posted by: "Richard Pike" <thegreybaron(at)charter.net (thegreybaron(at)charter.net)>

 pipercolt wrote:

 > I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. I also bought a set of steel gear legs but they don't look like they will fit. The aluminum ones are same size all the way up inside the tubing on the cage but the steel ones have 2 collars around them and are considerably smaller in diameter where they exit the cage. Are they not for a MK 111?

 > Thanks

 > Bob

 If they look like this, then yes, they are for a MKIII. I am using them now.

 --------

 Richard Pike

 Kolb MKIII N420P (420ldPoops)

 Kingsport, TN 3TN0

 There are two kinds of people: those who say to God, 'Thy will be done,' and those to whom God says, 'All right, then, have it your way.'

 Read this topic online here:

 http://forums.matronics.com/viewtopic.php?p=440486#440486

 Attachments:

 http://forums.matronics.com//files/p1050448_large_130.jpg

 http://forums.matronics.com//files/p1050449_large_153.jpg

 ===========

 -List" target="_blank">http://www.matronics.com/Navigator?Kolb-List

 ===========

  FORUMS -

 _blank">http://forums.matronics.com

 ===========

 b Site -

           -Matt Dralle, List Admin.

 target="_blank">http://www.matronics.com/contribution

 ===========

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[b]

russk50(at)gmail.com
Guest

Posted: Thu Apr 09, 2015 9:31 am Post subject: MK 111 rebuild

Dennis -  hereâ€™s a small complaint;  witht the taller legs my Xtra wont fit into the trailer/hangar!Russ

 	  Quote: 	
		  On Apr 9, 2015, at 1:08 PM, Dennis Rowe <rowedenny(at)windstream.net (rowedenny(at)windstream.net)> wrote:

I've never heard anyone on this list who has those style legs complain about them and they seem to be super durable.

Having started with the original straight aluminum legs and  switched to the taller bent steel tube legs, I much prefer the look of the taller steel legs.

Do not archiveDennis "Skid" RoweMk3, Rotax 670, 

Leechburg, PA



On Apr 9, 2015, at 11:17 AM, Rick Neilsen <neilsenrm(at)gmail.com (neilsenrm(at)gmail.com)> wrote:

 	  Quote: 	
		  I also have the tapered spring steel landing gear that Richard posted photos of. Old Kolb developed these gear legs. When Old Kolb built them they welded a tubular extension on the nub at the 31 inch (from Richard's second photo) part of the gear legs. This extension carried the landing load further up into gear socket in the fuselage cage.

When I installed these gear legs on my MKIIIC I slipped a 4130 steel tube over the gear legs from the 21 inch measure to app 36 inch measure. The tube is slightly smaller OD than the gear socket ID. I had to grind the nub at the 31 inch measure down a bit to fit in the reinforcing tube. I would have welded on a extension on like Old Kolb did but was afraid of changing the tempering of the gear legs.



The gear legs are great, very durable with plenty of travel and spring. They are shorter than the newer tubular gear legs but work well for me. You do have to be careful because the spring in the gear will bounce you back into the air on a bad landing.



Rick Neilsen

Redrive VW Powered MKIIIC



On Thu, Apr 9, 2015 at 7:45 AM, Richard Pike <thegreybaron(at)charter.net (thegreybaron(at)charter.net)> wrote: 	  Quote: 	
		  --> Kolb-List message posted by: "Richard Pike" <thegreybaron(at)charter.net (thegreybaron(at)charter.net)>   pipercolt wrote: > I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. I also bought a set of steel gear legs but they don't look like they will fit. The aluminum ones are same size all the way up inside the tubing on the cage but the steel ones have 2 collars around them and are considerably smaller in diameter where they exit the cage. Are they not for a MK 111? > Thanks > Bob   If they look like this, then yes, they are for a MKIII. I am using them now.  -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 There are two kinds of people: those who say to God, 'Thy will be done,' and those to whom God says, 'All right, then, have it your way.'     Read this topic online here:  http://forums.matronics.com/viewtopic.php?p=440486#440486     Attachments:  http://forums.matronics.com//files/p1050448_large_130.jpg http://forums.matronics.com//files/p1050449_large_153.jpg     =========== -List" target="_blank">http://www.matronics.com/Navigator?Kolb-List ===========  FORUMS - _blank">http://forums.matronics.com =========== b Site -           -Matt Dralle, List Admin. target="_blank">http://www.matronics.com/contribution ===========    	




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 [quote][b]

rowedenny

Joined: 09 Mar 2008
Posts: 338
Location: Western PA

Posted: Thu Apr 09, 2015 12:35 pm Post subject: MK 111 rebuild

I'd sell you my aluminum ones but I figured they are good spares. Lol!



Dennis "Skid" RoweMk3, Rotax 670, 

Leechburg, PA

On Apr 9, 2015, at 1:31 PM, kinne russ <russk50(at)gmail.com (russk50(at)gmail.com)> wrote:

[quote]Dennis -  hereâ€™s a small complaint;  witht the taller legs my Xtra wont fit into the trailer/hangar!Russ

 	  Quote: 	
		  On Apr 9, 2015, at 1:08 PM, Dennis Rowe <rowedenny(at)windstream.net (rowedenny(at)windstream.net)> wrote:

I've never heard anyone on this list who has those style legs complain about them and they seem to be super durable.

Having started with the original straight aluminum legs and  switched to the taller bent steel tube legs, I much prefer the look of the taller steel legs.

Do not archiveDennis "Skid" RoweMk3, Rotax 670, 

Leechburg, PA



On Apr 9, 2015, at 11:17 AM, Rick Neilsen <neilsenrm(at)gmail.com (neilsenrm(at)gmail.com)> wrote:

 	  Quote: 	
		  I also have the tapered spring steel landing gear that Richard posted photos of. Old Kolb developed these gear legs. When Old Kolb built them they welded a tubular extension on the nub at the 31 inch (from Richard's second photo) part of the gear legs. This extension carried the landing load further up into gear socket in the fuselage cage.

When I installed these gear legs on my MKIIIC I slipped a 4130 steel tube over the gear legs from the 21 inch measure to app 36 inch measure. The tube is slightly smaller OD than the gear socket ID. I had to grind the nub at the 31 inch measure down a bit to fit in the reinforcing tube. I would have welded on a extension on like Old Kolb did but was afraid of changing the tempering of the gear legs.



The gear legs are great, very durable with plenty of travel and spring. They are shorter than the newer tubular gear legs but work well for me. You do have to be careful because the spring in the gear will bounce you back into the air on a bad landing.



Rick Neilsen

Redrive VW Powered MKIIIC



On Thu, Apr 9, 2015 at 7:45 AM, Richard Pike <thegreybaron(at)charter.net (thegreybaron(at)charter.net)> wrote: 	  Quote: 	
		  --> Kolb-List message posted by: "Richard Pike" <thegreybaron(at)charter.net (thegreybaron(at)charter.net)>   pipercolt wrote: > I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. I also bought a set of steel gear legs but they don't look like they will fit. The aluminum ones are same size all the way up inside the tubing on the cage but the steel ones have 2 collars around them and are considerably smaller in diameter where they exit the cage. Are they not for a MK 111? > Thanks > Bob   If they look like this, then yes, they are for a MKIII. I am using them now.  -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 There are two kinds of people: those who say to God, 'Thy will be done,' and those to whom God says, 'All right, then, have it your way.'     Read this topic online here:  http://forums.matronics.com/viewtopic.php?p=440486#440486     Attachments:  http://forums.matronics.com//files/p1050448_large_130.jpg http://forums.matronics.com//files/p1050449_large_153.jpg     =========== -List" target="_blank">http://www.matronics.com/Navigator?Kolb-List ===========  FORUMS - _blank">http://forums.matronics.com =========== b Site -           -Matt Dralle, List Admin. target="_blank">http://www.matronics.com/contribution ===========    	




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[b]

russk50(at)gmail.com
Guest

Posted: Thu Apr 09, 2015 12:53 pm Post subject: MK 111 rebuild

My alum ones are still on the a/c but I had to straighten one . Do you know if this â€˜softensâ€™ them ? 	  Quote: 	
		  On Apr 9, 2015, at 4:34 PM, Dennis Rowe <rowedenny(at)windstream.net (rowedenny(at)windstream.net)> wrote:

I'd sell you my aluminum ones but I figured they are good spares. Lol!Dennis "Skid" RoweMk3, Rotax 670, 

Leechburg, PA



On Apr 9, 2015, at 1:31 PM, kinne russ <russk50(at)gmail.com (russk50(at)gmail.com)> wrote:

 	  Quote: 	
		  Dennis -  hereâ€™s a small complaint;  witht the taller legs my Xtra wont fit into the trailer/hangar!Russ

 	  Quote: 	
		  On Apr 9, 2015, at 1:08 PM, Dennis Rowe <rowedenny(at)windstream.net (rowedenny(at)windstream.net)> wrote:

I've never heard anyone on this list who has those style legs complain about them and they seem to be super durable.

Having started with the original straight aluminum legs and  switched to the taller bent steel tube legs, I much prefer the look of the taller steel legs.

Do not archiveDennis "Skid" RoweMk3, Rotax 670, 

Leechburg, PA



On Apr 9, 2015, at 11:17 AM, Rick Neilsen <neilsenrm(at)gmail.com (neilsenrm(at)gmail.com)> wrote:

 	  Quote: 	
		  I also have the tapered spring steel landing gear that Richard posted photos of. Old Kolb developed these gear legs. When Old Kolb built them they welded a tubular extension on the nub at the 31 inch (from Richard's second photo) part of the gear legs. This extension carried the landing load further up into gear socket in the fuselage cage.

When I installed these gear legs on my MKIIIC I slipped a 4130 steel tube over the gear legs from the 21 inch measure to app 36 inch measure. The tube is slightly smaller OD than the gear socket ID. I had to grind the nub at the 31 inch measure down a bit to fit in the reinforcing tube. I would have welded on a extension on like Old Kolb did but was afraid of changing the tempering of the gear legs.



The gear legs are great, very durable with plenty of travel and spring. They are shorter than the newer tubular gear legs but work well for me. You do have to be careful because the spring in the gear will bounce you back into the air on a bad landing.



Rick Neilsen

Redrive VW Powered MKIIIC



On Thu, Apr 9, 2015 at 7:45 AM, Richard Pike <thegreybaron(at)charter.net (thegreybaron(at)charter.net)> wrote: 	  Quote: 	
		  --> Kolb-List message posted by: "Richard Pike" <thegreybaron(at)charter.net (thegreybaron(at)charter.net)>   pipercolt wrote: > I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. I also bought a set of steel gear legs but they don't look like they will fit. The aluminum ones are same size all the way up inside the tubing on the cage but the steel ones have 2 collars around them and are considerably smaller in diameter where they exit the cage. Are they not for a MK 111? > Thanks > Bob   If they look like this, then yes, they are for a MKIII. I am using them now.  -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 There are two kinds of people: those who say to God, 'Thy will be done,' and those to whom God says, 'All right, then, have it your way.'     Read this topic online here:  http://forums.matronics.com/viewtopic.php?p=440486#440486     Attachments:  http://forums.matronics.com//files/p1050448_large_130.jpg http://forums.matronics.com//files/p1050449_large_153.jpg     =========== -List" target="_blank">http://www.matronics.com/Navigator?Kolb-List ===========  FORUMS - _blank">http://forums.matronics.com =========== b Site -           -Matt Dralle, List Admin. target="_blank">http://www.matronics.com/contribution ===========    	




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 [quote][b]

rowedenny

Joined: 09 Mar 2008
Posts: 338
Location: Western PA

Posted: Thu Apr 09, 2015 1:23 pm Post subject: MK 111 rebuild

If the bend wasn't too severe you should be able to straighten them once or twice, past that, I'd scrap them.

Do not archive



Dennis "Skid" RoweMk3, Rotax 670, 

Leechburg, PA

On Apr 9, 2015, at 4:53 PM, kinne russ <russk50(at)gmail.com (russk50(at)gmail.com)> wrote:

[quote]My alum ones are still on the a/c but I had to straighten one . Do you know if this â€˜softensâ€™ them ? 	  Quote: 	
		  On Apr 9, 2015, at 4:34 PM, Dennis Rowe <rowedenny(at)windstream.net (rowedenny(at)windstream.net)> wrote:

I'd sell you my aluminum ones but I figured they are good spares. Lol!Dennis "Skid" RoweMk3, Rotax 670, 

Leechburg, PA



On Apr 9, 2015, at 1:31 PM, kinne russ <russk50(at)gmail.com (russk50(at)gmail.com)> wrote:

 	  Quote: 	
		  Dennis -  hereâ€™s a small complaint;  witht the taller legs my Xtra wont fit into the trailer/hangar!Russ

 	  Quote: 	
		  On Apr 9, 2015, at 1:08 PM, Dennis Rowe <rowedenny(at)windstream.net (rowedenny(at)windstream.net)> wrote:

I've never heard anyone on this list who has those style legs complain about them and they seem to be super durable.

Having started with the original straight aluminum legs and  switched to the taller bent steel tube legs, I much prefer the look of the taller steel legs.

Do not archiveDennis "Skid" RoweMk3, Rotax 670, 

Leechburg, PA



On Apr 9, 2015, at 11:17 AM, Rick Neilsen <neilsenrm(at)gmail.com (neilsenrm(at)gmail.com)> wrote:

 	  Quote: 	
		  I also have the tapered spring steel landing gear that Richard posted photos of. Old Kolb developed these gear legs. When Old Kolb built them they welded a tubular extension on the nub at the 31 inch (from Richard's second photo) part of the gear legs. This extension carried the landing load further up into gear socket in the fuselage cage.

When I installed these gear legs on my MKIIIC I slipped a 4130 steel tube over the gear legs from the 21 inch measure to app 36 inch measure. The tube is slightly smaller OD than the gear socket ID. I had to grind the nub at the 31 inch measure down a bit to fit in the reinforcing tube. I would have welded on a extension on like Old Kolb did but was afraid of changing the tempering of the gear legs.



The gear legs are great, very durable with plenty of travel and spring. They are shorter than the newer tubular gear legs but work well for me. You do have to be careful because the spring in the gear will bounce you back into the air on a bad landing.



Rick Neilsen

Redrive VW Powered MKIIIC



On Thu, Apr 9, 2015 at 7:45 AM, Richard Pike <thegreybaron(at)charter.net (thegreybaron(at)charter.net)> wrote: 	  Quote: 	
		  --> Kolb-List message posted by: "Richard Pike" <thegreybaron(at)charter.net (thegreybaron(at)charter.net)>   pipercolt wrote: > I have removed the single pedal cable brakes and want to install the Matco hydraulic brakes. Is there any drawings on how and where to install them. I also bought a set of steel gear legs but they don't look like they will fit. The aluminum ones are same size all the way up inside the tubing on the cage but the steel ones have 2 collars around them and are considerably smaller in diameter where they exit the cage. Are they not for a MK 111? > Thanks > Bob   If they look like this, then yes, they are for a MKIII. I am using them now.  -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 There are two kinds of people: those who say to God, 'Thy will be done,' and those to whom God says, 'All right, then, have it your way.'     Read this topic online here:  http://forums.matronics.com/viewtopic.php?p=440486#440486     Attachments:  http://forums.matronics.com//files/p1050448_large_130.jpg http://forums.matronics.com//files/p1050449_large_153.jpg     =========== -List" target="_blank">http://www.matronics.com/Navigator?Kolb-List ===========  FORUMS - _blank">http://forums.matronics.com =========== b Site -           -Matt Dralle, List Admin. target="_blank">http://www.matronics.com/contribution ===========    	




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[b]

pipercolt

Joined: 08 Jan 2012
Posts: 46
Location: Randolph New York

Posted: Thu Apr 09, 2015 3:42 pm Post subject: Re: MK 111 rebuild

Neil

I wonder what the reason was that Old kolb welded on the extension. Thanks to all that have responded. This is a great site.

Bob

John Hauck

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

Posted: Thu Apr 09, 2015 4:33 pm Post subject: MK 111 rebuild

Summer 1988, after flying over Niagara Falls the first time in my Kolb

Firestar, I had an engine failure and forced landing over the river between

Buffalo and Grand Island, NY, in the middle of the Niagara River.  Got real

busy on short, short final and stalled the Firestar ripping out the gear leg

socket and shearing a socket in midsection.  Up until this time the

instructions called for running the gear leg only halfway into the socket.

This put the load at the weakest point where the socket was drilled for

securing the leg.  Winter 1988, Brother Jim and I completely rebuilt the

Firestar fuselage.  We decided at this time to run the 4130 gear legs (our

design) all the way into the socket until it bottomed out at the

intersection, spreading the load throughout the socket.  Never sheared

another one after that.



The extension was an improvement over the old system of insertion only

halfway in.



Homer Kolb used to tell me I was his best test bed.  If it could be broken,

I'd probably do just that.



Miss those good old days.



john h

mkIII

Titus, Alabama



--

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

pipercolt

Joined: 08 Jan 2012
Posts: 46
Location: Randolph New York

Posted: Fri Apr 10, 2015 4:01 pm Post subject: Re: MK 111 rebuild

Well John, that does make sense. I live just about 50 airmiles South of your unintended landing at the falls. I think I will install them as they are. I fly off a 2000' grass strip and PLAN on any off field landings. Has anyone moved the battery to the nose section of the plane? I know that is a long way to run the positive cable but It sure would help with the CG.

Thanks

Bob

John Hauck

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

Posted: Fri Apr 10, 2015 4:39 pm Post subject: MK 111 rebuild

With a steel leg terminating at the midpoint of the gear leg

socket, one has effectively constructed a shear at the

weakest point of the socket.



I haven't paid that much attention to the old solid steel

legs.  Did not realize they were designed short.



Before I would relocate the battery from the CG to the nose

I would test fly the airplane.  Now that is what I would do

if I had an itch to put a heavy battery way up there.  Heck,

we have had folks haul lead in the nose.



Nose down pitch at cruise and full power is the biggest

annoyance of a MKIII.  Normally, they do not have a CG

problem.  Adverse pitch down is caused by the high thrust

line of the pusher configuration.  Can be dealt with by

forced trim and aileron adjustment.



john h

mkIII

Titus, Alabama



--

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Fri Apr 10, 2015 6:25 pm Post subject: MK 111 rebuild

Bob, I'm in the process of overhauling the brake system on a Just Aircraft Highlander with Matco internal caliper brakes. I've not seen it mentioned in the manual but make sure the calipers are mounted such that the airflow carries the brake dust away from the sliders on the caliper. For the internal calipers that's AFT of the axle.Also, the Highlander was experiencing severe pad wear. Worn out in 30 hours. My theory is that the Nylaflow tubing was installed so that it had to have an "S" bend that caused the tubing to act like a spring and keep the fixed pad in constant contact with the disk. The fix, again my theory, is to put a 90 degree steet ell into the caliper pointing toward the center of the aircraft and a 45 degree 1/8 NPT to 1/4 compression fitting (Matco has them:

Â http://www.matcomfg.com/BRASSELBOW45DEGR18NPT14COMPRESSIONWITHINSERT-idv-3584-35.html

so that the brake line follows the gear leg all the way to the caliper with minimal bending. Like I said, that's the theory so use at your own discretion.

Rick Girard

On Fri, Apr 10, 2015 at 7:38 PM, John Hauck <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)> wrote:

[quote]--> Kolb-List message posted by: "John Hauck" <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)>

 

 With a steel leg terminating at the midpoint of the gear leg

 socket, one has effectively constructed a shear at the

 weakest point of the socket.

 

 I haven't paid that much attention to the old solid steel

 legs.Â  Did not realize they were designed short.

 

 Before I would relocate the battery from the CG to the nose

 I would test fly the airplane.Â  Now that is what I would do

 if I had an itch to put a heavy battery way up there.Â  Heck,

 we have had folks haul lead in the nose.

 

 Nose down pitch at cruise and full power is the biggest

 annoyance of a MKIII.Â  Normally, they do not have a CG

 problem.Â  Adverse pitch down is caused by the high thrust

 line of the pusher configuration.Â  Can be dealt with by

 forced trim and aileron adjustment.

 

 john h

 mkIII

 Titus, Alabama

 

 --

_________________
The smallest miracle right in front of you is enough to make you happy....

patrickjladd(at)hotmail.c
Guest

Posted: Sat Apr 11, 2015 1:32 am Post subject: MK 111 rebuild

<<Before I would relocate the battery from the CG to the nose I would test 

fly the airplane. >>



John,

surely the C of G would have been calculated with the battery in position, 

in flying position before the plane was taken into the air on her first 

flight. I needed  some lead in the nose to bring the C of G between the 

specified limits on my Xtra. Nothing to do with flying characteristics. If 

the battery can be moved to produce the correct C of G without adding extra 

weight somewhere, thats a bonus.



Pat



--

e.bayliss(at)blueyonder.c
Guest

Posted: Sat Apr 11, 2015 3:57 am Post subject: MK 111 rebuild

Hi all long time no post from me but still read the list regularly. Like pat's extra my mk111 classic has lead in the nosecone it is one if the things I am thinking of changing .I figure the battery sits behind the seat at just about the cg and if I put it in the nose I can take the same weight of lead out of there only a few kilos saved but better out the aircraft than in it .people with more experience and knowledge than me are welcome to point out any pitfalls in my thoughts on this 

Eddie



From: Patrick Ladd (patrickjladd(at)hotmail.com)

Sent: â€Ž11/â€Ž04/â€Ž2015 10:31

To: kolb-list(at)matronics.com (kolb-list(at)matronics.com)

Subject: Re: Kolb-List: Re: MK 111 rebuild

--> Kolb-List message posted by: Patrick Ladd <patrickjladd(at)hotmail.com>



<<Before I would relocate the battery from the CG to the nose I would test 

fly the airplane. >>



John,

surely the C of G would have been calculated with the battery in position, 

in flying position before the plane was taken into the air on her first 

flight. I needed  some lead in the nose to bring the C of G between the 

specified limits on my Xtra. Nothing to do with flying characteristics. If 

the battery can be moved to produce the correct C of G without adding extra 

weight somewhere, thats a bonus.



Pat



--

patrickjladd(at)hotmail.c
Guest

Posted: Sat Apr 11, 2015 5:54 am Post subject: MK 111 rebuild

Hi Eddie. just thoughts. i did some experimentation with battery position  (and battery come to that) Find something substantial to fix the battery to, and  then do the sums. You need something more than a bit of ply to hold the battery  in place in a heavy landing, or maybe even in strong turbulence. Better to maybe  move the battery forward to a secure location and then fine balance with a small  amount of lead. Incidentally I used a racing motorbike battery (Called a RED TOP  over here) It had bags of power whereas my first battery went flat if the engine  didn`t catch on the first few turns

   Incidentally I used sheet lead cut to about 3 or  4 inch squares, put them in a stack and drilled two holes right through. I  clamped them together with a metal bar across the top drilled to suit the holes  in the lead. With a suitable large plate at the other end and a couple of bolts  that was it. You can easily add or subtract a single piece of lead when you get  to fine tuning.

  

 Cheers

  

 Pat

  From: Eddie (e.bayliss(at)blueyonder.co.uk) 

 Sent: Saturday, April 11, 2015 12:54 PM

 To: kolb-list(at)matronics.com (kolb-list(at)matronics.com) 

 Subject: RE: Re: MK 111 rebuild

  



   Hi all long time  no post from me but still read the list regularly. Like pat's extra my mk111  classic has lead in the nosecone it is one if the things I am thinking of  changing .I figure the battery sits behind the seat at just about the cg and if  I put it in the nose I can take the same weight of lead out of there only a few  kilos saved but better out the aircraft than in it .people with more experience  and knowledge than me are welcome to point out any pitfalls in my thoughts on  this 

Eddie



   From:  Patrick Ladd (patrickjladd(at)hotmail.com)

Sent:  â€Ž11/â€Ž04/â€Ž2015  10:31

To:  kolb-list(at)matronics.com (kolb-list(at)matronics.com)

Subject:  Re:  Re: MK 111 rebuild

--> Kolb-List message  posted by: Patrick Ladd <patrickjladd(at)hotmail.com>



<<Before I  would relocate the battery from the CG to the nose I would test 

fly the  airplane. >>



John,

surely the C of G would have been calculated  with the battery in position, 

in flying position before the plane was taken  into the air on her first 

flight. I needed  some lead in the nose to  bring the C of G between the 

specified limits on my Xtra. Nothing to do with  flying characteristics. If 

the battery can be moved to produce the correct C  of G without adding extra 

weight somewhere, thats a  bonus.



Pat



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