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                           Pietenpol-List Digest Archive
                                      ---
                     Total Messages Posted Thu 11/19/15: 3
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Today's Message Index:
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     1. 03:23 AM - Re: Rudder Post  (oldbird)
     2. 06:18 AM - Re: Rudder Post  (Bill Church)
     3. 06:37 AM - Re: Re: Rudder Post  (Scott Knowlton)
 
 
 
________________________________  Message 1  _____________________________________


Time: 03:23:06 AM PST US
Subject: Pietenpol-List: Re: Rudder Post
From: "oldbird" <semihoksay@gmail.com>


Hi 

I realized one of the drawings specify "braze" and the other nothing for the rudder
bar pivot bolt. None says "weld". Braze and weld are not the same. To my
knowledge, AN bolts are made of some alloy steel. Most likely containing chromium
and heat treated. Usually they harden when heated red hot and left to cool.
This causes a boundary of different crystal structures at and beside the welded
area. This is a danger area in starting a crack.

This brings up a question to my mind: What type of bolts did Mr. Pietenpol use?
Were AN hardware available as early as 1920s, in Minnesota? This will also help
my decision about the bolts I am going to use in my Piet. My guess: Mr. Pietenpol
used normal grade 8 bolts.

Regards and happy landings.

Semih


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=449738#449738


________________________________  Message 2  _____________________________________


Time: 06:18:05 AM PST US
Subject: Pietenpol-List: Re: Rudder Post
From: "Bill Church" <billspiet@sympatico.ca>


In the plans, the only reference to any fastener specification that I could find
was on the drawing sheet for the split landing gear.  In the materials list,
the bolts are listed as "nickel steel."  So, it might be safe to assume that
this would be the type of fasteners used throughout the aircraft, when it was
designed.    
Nickel Steel is an alloy steel, with nickel being added to the steel for added
strength, ductility and corrosion resistance.  However,  finding fasteners made
of Nickel Steel in today's world is a challenge.  Perhaps they were readily
available in the 1930s.

Bill C.


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=449744#449744


________________________________  Message 3  _____________________________________


Time: 06:37:39 AM PST US
Subject: Re: Pietenpol-List: Re: Rudder Post
From: Scott Knowlton <flyingscott_k@hotmail.com>


And probably cost less than a nickel!  

Sent from my iPhone

> On Nov 19, 2015, at 9:22 AM, Bill Church <billspiet@sympatico.ca> wrote:
> 
> 
> In the plans, the only reference to any fastener specification that I could find
was on the drawing sheet for the split landing gear.  In the materials list,
the bolts are listed as "nickel steel."  So, it might be safe to assume that
this would be the type of fasteners used throughout the aircraft, when it was
designed.    
> Nickel Steel is an alloy steel, with nickel being added to the steel for added
strength, ductility and corrosion resistance.  However,  finding fasteners made
of Nickel Steel in today's world is a challenge.  Perhaps they were readily
available in the 1930s.
> 
> Bill C.
> 
> 
> 
> 
> Read this topic online here:
> 
> http://forums.matronics.com/viewtopic.php?p=449744#449744
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 


 

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