 |
but Big Boys are articulated.
That means that there's 2
sets of cylinders and that the
drive wheel trucks can pivot
in the middle. The 4-8-8-4
wheel arrangement gives the
Big Boy 16 drive wheels!
By the way, that is a minivan
right behind it.
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UP4012 Big Boy | |
| It's hard to see in this picture, but Big Boys are articulated. That means that there's 2 sets of cylinders and that the drive wheel trucks can pivot in the middle. The 4-8-8-4 wheel arrangement gives the Big Boy 16 drive wheels! By the way, that is a minivan right behind it. |
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