>>1773005I think that
>>1773053 got most of the reasons, but it's also important to remember that the PRR did once try and go big on articulation with pic related. Likely the most powerful locomotive in the world at the time it was made, the Pennsy made a simple expansion articulated before it was cool. However, it was monstrous, weighing almost 600k at a time when big freight articulateds weighrd maybe 500k, and the Pennsy complained it was too big and too powerful. At the time it was built, the next heaviest loco on the road were the Lines West N1s at 420k, and the Hippos were the strongest at 60% of the tractive effort of the HC1s. For a railroad that though a trailing truck was passe until the mid 1910s, the HC1s was simply an unjustifiable, complicated extravagance, and it put a bad taste in the railroad's mouth about articulateds ever after. If they couldn't do it right during their golden age, management figured, there was no chance anyone would ever be able to do better.