Youngstown doors (was 7' wide 10' IH Youngstown door for CRP XM-4)

Tim O'Connor

Jim in the PNW

Too bad this isn't the MFCL where Dick Dawson probably could explain the technical
differences between different door designs.

You may be correct about the "different times" since I imagine the production machinery
for these steel products probably had to be replaced now and then... so why not tweak
the design?

Another reason might be different production facilities - or even licensed production in other

Ed Hawkins might know. Or maybe the answer could be found in contemporaneous engineering
publications like Railway Mechanical Engineer.

In general I don't waste time thinking about such things. The 'appearance' of things is all that I
really care about, as a modeler. Why are they the way they are? Meh. :-)

On 7/15/2022 10:51 AM, Jim Betz wrote:

  I'm not challenging the differences - but I have a question ...

  Why would a railroad order/use a 5/6/6 -vs- a 5/6/5 -vs- a 4/6/6 ... etc.?  Other
than a spotting freature why did Youngstown make different configuration for 
a "nominal 10'6" height door?  
  Were these actually made so they would fit 'slight' (?) differences in height?
Done at different times ("evolving technology")?  Some other reason?

  And, for that matter, was there a significant difference between the Youngstown
doors and some other makers?

  Or was it all about the cost ... at a point in time?
                                                                                                      - Jim in the PNW

Tim O'Connor
Sterling, Massachusetts