Atlantic Central wrote:
Not to get the Big Boy crowd stirred up, but the Allegheny was more powerful in terms of boiler HP, it could handle sharper curves at higher speeds (true of most east coast power due to different operating conditions in the east), and had nearly the same tractive effort. The Allegheny was simply more versatile, although never really used to its full abilities. They were able to pull 5,000 tons at 45 MPH, but more often they worked coal trains of 10,000 tons at 15 MPH! The fact that it did so well in an application not fully in line with its ablities show just how vesatile it was.
I guess it all depends on HOW you DEFINE MORE POWERFUL and NEARLY the same tractive effort.
The numbers I have seen were 110,000# TE for the H-8, and 135,000# TE for the Big Boy. That puts the BB, at almost 23% more TE, so how do YOU define, nearly the same TE?
The BB, could START a heavier train than an H-8, but with a train that the H-8 could COULD start, it could ACCELERATE it more quickly. If it can’t start the train, the HP is USELESS.
BOTH locomotives were successes for their owning RR’s, worked different territories, and to declare one “BETTER” than the other is pointless, they didn’t do the same job. There is NO DOUBT, that the Big Boy was more Popular and Better Known than the H-8, possibly the BEST known locomotive, on a Coast to Coast basis, Maybe UP just had the best PR dept. But the BB, was Impressive and a household name.
To ME, that second story pilot deck on the H-8 is HIDEOUS, now the C&O H-7 is a D**N Good looking locomotive to me.
Doug