Most railroads opted for a caboose with two trucks (called "bogies") and eight wheels, but some eastern roads chose a no-truck, four-wheel design called a "bobber." The lack of trucks reduced the amount of steel needed for the caboose, thus lowering the final cost. This car got its name from the way it would "bob" down the track. Its tracking was so bad that several states enacted laws prohibiting the use of bobber cabooses (although by then the railroads had already stopped buying them).
This 4-wheel favorite is the perfect end for your logging, mining, or other narrow gauge train. Truly the minimalist approach to crew comfort, these cars are still most appealing to the eye. The most practical cabooses for those with limited transport, their short length allows you to carry a more complete train in less space.