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Technical question....YAK52 propeller hub.

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YAKY52

Joined: 08 Oct 2013
Posts: 8
Location: Bergamo Italy

Posted: Sun Nov 16, 2014 12:20 am Post subject: Technical question....YAK52 propeller hub.

Good morning Guys,



I need to know the steel alloy wich the propeller hub is made of,

I'm doing an ovrhaul on the Yak52 propeller, the company that is performing cadpalting have to bake the component and decide the correct timining to eliminate the component britle factor due to the nitrogen formation.

Any idea or suggestion regarding this subject??



Thank you

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cjpilot710(at)aol.com
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Posted: Sun Nov 16, 2014 1:06 pm Post subject: Technical question....YAK52 propeller hub.

My father was the chief foreman at EAL platting shop at MIA for 15+  years.  He cad plated my control sticks and linkage on the Pitts S1C I  built.  I can't remember the exact numbers but 345F for several hours comes  to mind.  Since this was enbrittlement for thin wall tubing and parts,  not really (to me any way) a big concern with the mass of prop hub.    With EPA the way it is today, this process will most likely cost you a  good penny or two.  While cad plating will definitely keep  corrosion away indefinitely, a cheaper way maybe just a good  cleansing/etching and a couple coats of a 2 part high grade epoxy  paint.  The interior of the hub needs to keep its dimensional tolerances  and cad plating will throw those off.  Those areas would need to be waxed  coated to prevent cad build-up.  A more complicated process than masking  tape.

  

 Lets us know how that works out.

  

 Jim "Pappy" Goolsby

  

  In a message dated 11/16/2014 3:21:33 A.M. Eastern Standard Time,  vulavula(at)libero.it writes:

  	  Quote: 	
		  -->    Yak-List message posted by: "YAKY52" <vulavula(at)libero.it>



Good    morning Guys,



I need to know the steel alloy wich the propeller hub is    made of,

I'm doing an ovrhaul on the Yak52 propeller, the company that is    performing cadpalting have to bake the component and decide the correct    timining to eliminate the component britle factor due to the nitrogen    formation.

Any idea or suggestion regarding this subject??



Thank    you





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YAKY52

Joined: 08 Oct 2013
Posts: 8
Location: Bergamo Italy

Posted: Tue Nov 18, 2014 3:41 pm Post subject: Re: Technical question....YAK52 propeller hub.

Thank you for the answer and suggestions.

I understand the problems relating to cadplating and having considered the epoxy paint as an alternative solution I'll go for it.

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