This is the place where the majority of the warbird (aircraft that have survived military service) discussions will take place. Specialized forums may be added in the new future
Fri Mar 18, 2011 8:32 pm
Hello all,
I am in the process of assembling the NA-64's fuel control gear box assembly (Same as AT-6 Part #36-48016) and also the two flap control gear boxes. The gears are attached to the shafts by a steel pin that is peened on both ends. The assembly drawings show that the pin is made from 1/8" Steel Drill Rod, Material Spec 57-108. I have done a search on the web for that material spec and nothing is showing up unless it is a North American specific material number.
Any insight would be great.
Patrick
Sat Mar 19, 2011 12:54 am
Hi,
I own a machine shop and we make alot of componets for vintage airplanes. I would guess that the Material spec 57-108 is a North American part number. I would recommend using 4140 HT (Heat Treat) material. The tensil strength is high and you could still peen it over. It will be available through your local material house. I can supply you with more material specs and a material house, if you need it.
Bill
Sat Mar 19, 2011 9:29 am
Patrick: Found this that might help....
http://www.aircorpsaviation.com/Website ... 0JE-36.pdfScroll down and look at p/n 46A4127.
Should give you enough data.
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