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[quote user="GP40-2"]Crandell, I have to disagree with you that that UP FEF was comparable with the NYC S1b. The main issue is the FEF has a rather small boiler, with only 4300 sq.ft. evaporative heating surface and 1400 sq.ft. superheater surface. The S1b had a larger overall boiler with 4820 sq.ft. evaporative heating surface and 2100 sq.ft. superheater surface. If you want a comparable 4-8-4 to the S1b, you need to look at the C&O J3a class built in 1948 (#610 to #614). The J3a had a very similar overall boiler design to the S1b, with the difference being the J3a boiler was even larger with with 5600 sq.ft. evaporative surface and 2300 sq.ft. superheater surface area. The J3a boiler was longer, larger in diameter, and had a bigger combustion chamber than the earlier S1b. Remember those long 25-26 car trains the 614 pulled in excursion service at 80 mph? Ross Rowland was holding the 614 back most of the time just to keep the speed within FRA limits.[/quote] Dear GP-40-2, I wonder nobody mentioned that both were Alco products, or did somebody? Maybe we can see the FEF as a predecessor of the Niagara? Though I do not know how much influences were directed by their respective Steam-Departments to Alco. Best Regards Lars
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