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J9-G1 CJ-6 Prop Needed

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ChangDriver

Joined: 15 Sep 2007
Posts: 266

Posted: Fri Jan 08, 2010 8:37 am Post subject: J9-G1 CJ-6 Prop Needed

The shop working on my plane was wondering why paint was lifting off a newly painted prop.  After inspecting the areas, they found intergranular corrosion on the prop blades.  Given the unknown age of the prop and hub, it may make sense to replace the entire prop with an overhauled prop rather than just replacing the blades. 



If anybody has an overhauled prop with logs, please contact me off list.



Thanks,



Craig W.

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cjpilot710(at)aol.com
Guest

Posted: Fri Jan 08, 2010 4:46 pm Post subject: J9-G1 CJ-6 Prop Needed

Craig,

 Inter granular corrosion is not unheard of in the Chinese  metal  props.  I've seen not less 3 cases of it.  It has a lot to do with  improper quenching at the mill during manufacture.  If you don't have any  corrosion in the hub, you just need to replace the blades.  Check with Doug  Sapp.

  

 Jim "Pappy" Goolsby

  

  In a message dated 1/8/2010 11:38:22 A.M. Eastern Standard Time,  capav8r(at)gmail.com writes:

  	  Quote: 	
		  -->    Yak-List message posted by: "Craig Winkelmann"    <capav8r(at)gmail.com>



The shop working on my plane was wondering    why paint was lifting off a newly painted prop.  After inspecting the    areas, they found intergranular corrosion on the prop blades.  Given the    unknown age of the prop and hub, it may make sense to replace the entire prop    with an overhauled prop rather than just replacing the blades. 



If    anybody has an overhauled prop with logs, please contact me off    list.



Thanks,



Craig W.





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talew(at)bellsouth.net
Guest

Posted: Fri Jan 08, 2010 5:25 pm Post subject: J9-G1 CJ-6 Prop Needed

Hi Craig,

 I agree with Jim on the prop problem. I am on my third set of blades. The I have now I got  from Doug and then stripped them , and

 sanded them , and refinished with epoxy paint . They might last a while. As Jim says, your hub is probably fine. 

Terry

 

   From: "cjpilot710(at)aol.com" <cjpilot710(at)aol.com>

To: yak-list(at)matronics.com

Sent: Fri, January 8, 2010 7:40:05 PM

Subject: Re: Yak-List: J9-G1 CJ-6 Prop Needed



 Craig,

 Inter granular corrosion is not unheard of in the Chinese  metal props.  I've seen not less 3 cases of it.  It has a lot to do with improper quenching at the mill during manufacture.  If you don't have any corrosion in the hub, you just need to replace the blades.  Check with Doug Sapp.

  

 Jim "Pappy" Goolsby

  

  In a message dated 1/8/2010 11:38:22 A.M. Eastern Standard Time, capav8r(at)gmail.com writes:

  	  Quote: 	
		  --> Yak-List message posted by: "Craig Winkelmann" <capav8r(at)gmail.com>



The shop working on my plane was wondering why paint was lifting off a newly painted prop.  After inspecting the areas, they found intergranular corrosion on the prop blades.  Given the unknown age of the prop and hub, it may make sense to replace the entire prop with an overhauled prop rather than just replacing the blades. 



If anybody has an overhauled prop with logs, please contact me off list.



Thanks,



Craig W.





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=280689#280689=============================               - MATRONICS WEB FORUMS =======================            - List Contribution Web Site sp;                         ==========================



	


 	  Quote: 	
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  [quote][b]

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jblake207(at)COMCAST.NET
Guest

Posted: Fri Jan 08, 2010 6:07 pm Post subject: J9-G1 CJ-6 Prop Needed

Craig, I have a set slightly used blades, but for some unknown reason both are curled about three inches on each tip!  Will sell cheap, cheap.  JB 



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[b]

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viperdoc(at)mindspring.co
Guest

Posted: Fri Jan 08, 2010 7:24 pm Post subject: J9-G1 CJ-6 Prop Needed

Damned I hate it when that happens. Pesky gear handles again?  

Doc  

       

From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of jblake207(at)comcast.net

 Sent: Friday, January 08, 2010 8:07 PM

 To: yak-list(at)matronics.com

 Subject: Re: J9-G1 CJ-6 Prop Needed  

  

  

     

Craig, I have a set slightly used blades, but for some unknown reason both are curled about three inches on each tip!  Will sell cheap, cheap.  JB  



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