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The following would perhaps best be answered by someone with experience in RR carbuilding, either at a car manufacturer or at a RR company shop doing major rebuilds of freight cars. I'm wondering if prototype freight car underframes are assembled/worked on "upside down" during their manufacture. I remember EMD assembling diesel loco chassis this way, then rotating the chassis right side up to install the equipment (prime move, generator, etc) on top of the floor. But was this done in building rolling stock? This question arises because many prototype underframe engineering drawings are top plan views, looking down with floor removed. Unfortunately, some people who make drawings for modeling purposes don't realize this, and the magazine editors don't catch this either. The result is published drawings in hobby magazines that show underframes reversed, because in modeling, we look at car underbodies upside down. This has happened most recently with Lionel's O Gauge milk cars introduced in Sept 2002 & currently being re-issued, and I'm told it is common with Athearn HO freight cars also. Comments from knowledgeable people with industry experience will be much appreciated. Thank you.
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