stencil on RS11 air tank

[NW Mailing List]

Yes shop code and location

Larry Evans

Sent from my iPhone

> On Jun 20, 2023, at 3:13 PM, NW Mailing List <nw-mailing-list at nwhs.org> wrote:
> 
> Mike 
> 
> It would be the railroad and shop code. 
> 
> Based on the fresh paint, and emblems, perhaps an N&W location, or Alco as new.
> 
> Probably “N&W” and either SC for Shaffers Crossing, RS (I think) for Roanoke Shops. I cannot seem to find my list (or remember what the file name is) for others.
> 
> Best
> Ken Miller
> 
>> On Jun 20, 2023, at 11:54 AM, NW Mailing List <nw-mailing-list at nwhs.org> wrote:
>> 
>> Thank you Abram! That is really interesting. His first reply after seeing the email I forwarded: "You guys speak in medieval on that board? Hahaha" 😃
>> 
>> Based on Abram's comments, he believes he has the top and bottom lines correct.  Here's what he has created for his O decals.  
>> Does anyone have any idea what might go in the center line where he has XXX XXX?
>> 
>> DECAL ART
>> <image.png>
>> 
>> ORIGINAL AIR TANK PHOTO
>> <image.png>
>> 
>> If anyone is interested in the files once complete, I can provide his contact info. My email is mrector333 at gmail.com
>> 
>> <image.png>
>> 
>> 
>> Mike Rector
>> 
>> 
>> On Sun, Jun 18, 2023 at 7:22 PM NW Mailing List <nw-mailing-list at nwhs.org> wrote:
>> Comrade Mishko Rectorkovski doth ye ask :
>> 
>>>> 
>> Can anyone help explain what text would have been located on this RS11 air
>> tank?  Or does someone have a better picture that shows the stencil?
>> I've searched draws in the Archives, without luck.  <<
>> 
>> That stenciling had to do with the required test of the main reservoirs as pressure vessels.  Mr. Gordon Hamilton obviously knows much more about thus than I do, but as I recall the ICC requirement was that main reservoirs be hammer tested at each MI  (monthly inspection) of the locomotive, looking for cracks or evidence of metallurgical failure.
>> 
>> Later on, someone figured out that the reservoirs could be drilled in a number of places, in a certain pattern, to some specified depth, and the hammer testing could be dispensed with.  The reasoning was that the drillings established weakened paths in the steel, along which fractures (cracks) would establish themselves and begin venting the pressure, before the vessel as a whole would explode in a catastrophic manner.
>> 
>> I never measured the drillings, but they were about 1/8th of an inch in depth and about 5/16ths inch in diameter, and they were spaced at a