ENGINES with this kind of wheel arrangement became known as
the Mastodon type. An experimental one was built in 1856 by Ross
Winans and called the Centipede but, as a class, this Lehigh
Valley locomotive is generally credited with being the first.
It was designed by Philip Hofecker, master mechanic of the Beaver
Meadow Division, and built at the road's Weatherly Shops.
Cylinders 20 by 26 inches Total weight 101,696 pounds Driving
wheels 48 inches in diameter Pressure 125 pounds Weight on drivers
82,432 pounds Truck wheels 24 inches in diameter Total wheelbase
23 feet 2 inches Rigid wheelbase 13 feet a
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