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Wheel to wheel dimension - Mark IIIC

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John Bickham

Joined: 10 Jan 2006
Posts: 170
Location: St. Francisville, LA

Posted: Fri Mar 24, 2006 4:13 pm Post subject: Wheel to wheel dimension - Mark IIIC

Hello List,



I have been working on some new gear legs for my Mark IIIC.  I've welded them up and fitted them.



Before I drill the holes for the axles I wanted to see if I was close to the right dimension for the distance from the outside to outside of the wheel.  Problem is my old gear legs are bent so bad it is hard to be sure.



I searched the archives and found I response to Larry B from Richard Pike.  Richard had a distance of 76" from outside of wheel to outside of wheel.



If any of you walk by your plane and could measure the wheel to wheel distance I would appreciate it.  I'm kinda doing this in the "true experimental" spirit as far as a my experience level goes.  Just checking.  I am a bit interested in what the variations are in this distance, if there is any, among all the MarkIIIC's.  Maybe everyone is right at 76".



I'm close to 78" with the axle flush against the sleeve.  You will notice that there is ~7 degree camber in the wheels. I'm not sure if it is positive or negative.  Not an expert. That is what Jim Hauck recommended.  I've read a few complaints about the factory gear sitting ugly with weight and a few firm landings.  Mine should be close to straight once I've done my little drop ins. Gives me room to work!  Kinda like the look better.



Thanks in advance.

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axle extended.jpg

Description:

Axle extended a bit. Do you think this would be a problem.

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axle flush.jpg

Description:

Axle mounted flush against sleeve.

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96.17 KB

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337 Time(s)

gear legs 007.jpg

Description:

Sit a bit higher with new gear and wheels. Notice the original bent gear in the background.

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116.38 KB

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367 Time(s)

_________________
Thanks too much,

John Bickham
Mark III-C w/ 912UL
St. Francisville, LA

I know many pilots and a few true aviators. There is a distinct difference that I have the greatest respect for.

John Hauck

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

Posted: Fri Mar 24, 2006 4:29 pm Post subject: Wheel to wheel dimension - Mark IIIC

| Before I drill the holes for the axles I wanted to see if I was 

close to the right dimension for the distance from the outside to 

outside of the wheel.   Kinda like the look better.

|

  |

| John Bickham

Looks great to me.  I like a lot of positive camber.



As far as track is concerned???  I don't think it makes a lot of 

difference.   My gear is probably a foot wider than standark MKIIIc. 

Helps me keep the wings level when I ground loop.  



Recommend using two 1/4" bolts in each axle socket.  When I put on my 

upgraded brakes, I was using the stand two 3/16" bolts.  First time I 

taxied down to the end of the strip, used the brake to pivot, I wrung 

off the two bolts.  That is when I decided to upgrade to 1/4.



Gonna be a good looking, good flying MKIIIc.  Already been initiated, 

so don't have to do that anymore.



john h

MKIII

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

Steven Green

Joined: 05 Feb 2006
Posts: 118

Posted: Sat Mar 25, 2006 2:39 pm Post subject: Wheel to wheel dimension - Mark IIIC

John,



Mine is 76" also.



Steven Green



 	  Quote: 	
		   



 Hello List,



 I have been working on some new gear legs for my Mark IIIC.  I've welded

them up and fitted them.
	


 	  Quote: 	
		  

 Before I drill the holes for the axles I wanted to see if I was close to

the right dimension for the distance from the outside to outside of the
	


wheel.  Problem is my old gear legs are bent so bad it is hard to be sure.

 	  Quote: 	
		  

 I searched the archives and found I response to Larry B from Richard Pike.

Richard had a distance of 76" from outside of wheel to outside of wheel.
	


 	  Quote: 	
		  

 If any of you walk by your plane and could measure the wheel to wheel

distance I would appreciate it.  I'm kinda doing this in the "true
	


experimental" spirit as far as a my experience level goes.  Just checking.

I am a bit interested in what the variations are in this distance, if there

is any, among all the MarkIIIC's.  Maybe everyone is right at 76".

 	  Quote: 	
		  

 I'm close to 78" with the axle flush against the sleeve.  You will notice

that there is ~7 degree camber in the wheels. I'm not sure if it is positive
	


or negative.  Not an expert. That is what Jim Hauck recommended.  I've read

a few complaints about the factory gear sitting ugly with weight and a few

firm landings.  Mine should be close to straight once I've done my little

drop ins. Gives me room to work!  Kinda like the look better.

 	  Quote: 	
		  

 Thanks in advance.



 --------

 Thanks too much,



 John Bickham

 Mark III-C

 Using my Repairman Certificate

 St. Francisville, LA





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=24053#24053





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 http://forums.matronics.com//files/axle_extended_761.jpg

 http://forums.matronics.com//files/axle_flush_119.jpg

 http://forums.matronics.com//files/gear_legs_007_264.jpg

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_________________
Steven Green

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