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Landing gear (axle material)

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dutrac

Joined: 06 Sep 2009
Posts: 7

Posted: Thu Jun 21, 2012 2:35 pm Post subject: Landing gear (axle material)

Hi Folks,



I have a Kolb MKII that I've given a few hard landings. The axles have bent and I've used a hydrolic press to straighten them once. After doing so it wasn't but a couple landings later that I noticed they were pretty well bent again. 



I talked to a factory rep and he told me that they don't recommend straightening them more than once. Whether right or wrong, I'm going to listen to that advice and replace them both.



My question to the group then is what grade of aluminum are the axles made out of?



Any help is appreciated.



Thanks!

Duane

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rickofudall

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

Posted: Thu Jun 21, 2012 2:41 pm Post subject: Landing gear (axle material)

7075-T6



Rick Girard



On Thu, Jun 21, 2012 at 5:35 PM, dutrac <dlrans(at)gmail.com (dlrans(at)gmail.com)> wrote:

  	  Quote: 	
		  --> Kolb-List message posted by: "dutrac" <dlrans(at)gmail.com (dlrans(at)gmail.com)>

  

 Hi Folks,

 

 I have a Kolb MKII that I've given a few hard landings. The axles have bent and I've used a hydrolic press to straighten them once. After doing so it wasn't but a couple landings later that I noticed they were pretty well bent again.

  

 I talked to a factory rep and he told me that they don't recommend straightening them more than once. Whether right or wrong, I'm going to listen to that advice and replace them both.

 

 My question to the group then is what grade of aluminum are the axles made out of?

 

 Any help is appreciated.

 

 Thanks!

 Duane

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=376255#376255

 

 

 

 

 

 

 

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-- 

Zulu Delta

Mk IIIC

Thanks, Homer GBYM

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   - Groucho Marx



 

  [quote][b]

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captainron1(at)cox.net
Guest

Posted: Sat Jun 23, 2012 12:43 pm Post subject: Landing gear (axle material)

those are 7075 aluminum, you better off either designing your own or getting the steel ones from the facto

ron (at) KFFL



---- dutrac <dlrans(at)gmail.com> wrote: 



=============




Hi Folks,



I have a Kolb MKII that I've given a few hard landings. The axles have bent and I've used a hydrolic press to straighten them once. After doing so it wasn't but a couple landings later that I noticed they were pretty well bent again. 



I talked to a factory rep and he told me that they don't recommend straightening them more than once. Whether right or wrong, I'm going to listen to that advice and replace them both.



My question to the group then is what grade of aluminum are the axles made out of?



Any help is appreciated.



Thanks!

Duane





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=376255#376255



--

Ron (at) KFHU

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kolbaircraft

Joined: 17 Dec 2010
Posts: 48

Posted: Mon Jun 25, 2012 11:45 am Post subject: Re: Landing gear (axle material)

The material is 7075 T651   MII would be 1.250   dia. on top



 Travis

Kolb CO.

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capedavis(at)yahoo.com
Guest

Posted: Mon Jun 25, 2012 5:06 pm Post subject: Landing gear (axle material)

Travis and all , Isn't that the gear legs you are talking about not the axle ? arent the axles Chromemoly? Not Aluminum

 Chris Davis

KXP 503 492 hrs

Glider Pilot

Disabled from crash building Firefly



    

From: kolbaircraft <customersupport(at)tnkolbaircraft.com>

To: kolb-list(at)matronics.com 

Sent: Monday, June 25, 2012 3:45 PM

Subject: Re: Landing gear (axle material)

--> Kolb-List message posted by: "kolbaircraft" <customersupport(at)tnkolbaircraft.com (customersupport(at)tnkolbaircraft.com)>



The material is 7075 T651  MII would be 1.250  dia. on top



Travis

Kolb CO.





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