Union Pacific O Scale Premier 4-8-8-4 Big Boy Steam Engine With Proto-Sound 2.0

Designed specifically by UP's Department of Research and Mechanical Standards, the Big Boy pulled 3600-ton trains unassisted over the Wasatch Mountains in Utah. While this locomotive is often cited as the biggest steam locomotive ever built, in fact it is not. The Norfolk & Western's Y6 and A, the Duluth Missabe & Iron Range's Yellowstones, and the Chesapeake and Ohio's Alleghenys were all in the same league, and some exceeded the Big Boy's weight and power.

This enduring symbol of American railroading returns to the Premier line for 2010, complete with industry-leading speed control, synchronized puffing smoke timed to driver revolutions, and a range of accurate sounds that characterize all M.T.H. locomotives. Our model features a Pittman motor and four traction tires for pulling power and speed that rival the original Big Boy - as well as authentic articulated chuffing sounds with the two engines drifting in and out of sync.

Outfitted in two configurations, the 2010 Big Boy Special Edition Sets includes your choice of a passenger consist or a freight train with either locomotive programmed with station or freight yard Proto-EffectsT. Each set is limited in quantity and will save you $300.00 when compared to the individual price of each item.