Re: Union Pacific Big Boy Roll Out
Here are some stats off a train forum,
This was quoted off a train site;
"Based on averages of several sources, I have come up with the numbers that the Big Boy consumed 28 tons of coal and 24,000 gallons of water running at a constant 40 MPH for about 1 hour climbing Sherman Hill. Go ahead and nitpick my numbers, but I believe that I am at least in the general ball park. It had 68" drivers, 24" bore by 32" stroke cylinders in rounded numbers, and if I understand double-acting, double-engined, simple-expansion steam correctly, there are 8 cylinder strokes per revolutions of the 68" wheels 67 cubic feet of swept cylinder volume for every 17.8 linear feet of travel.
A Big Boy locomotive along with its tender weighed about 604 tons and measured more than 132 feet (40 metres) in length. It had a maximum power capacity of more than 6,000 horsepower and could haul a 3,600-ton train unassisted up the Wasatch Mountain grade."