Another six "Mountains" (road numbers 405 through 410) followed from ALCO in 1923. They were designated as Class Y-1 and were essentially duplicates of the four Class Ys.
In 1929, ten more 4-8-2s were delivered from ALCO that were designated as Class Y-2 and assigned road numbers 451 through 460. These locomotives had 27 x 30 cylinders, 69" drivers, a 225 psi boiler pressure, a tractive effort of 60,620 lbs and each weighed 360,000 pounds.
The original Mountains had short tenders. The photo of 403 below shows it with the tender of an ex X class 2-10-2 locomotive. The 2-10-2s were scrapped because they were hard to maintain and hard to run -- they required two firemen. Instead of getting rid of the 2-10-2 tenders, the mountain type inherited the X's tenders and the mountain tenders went to a number of W class 2-8-0 locomotives. The 2-8-0s were remodeled with air pumps and many other things and were called W-2 class locomotives.
There are no surviving NYO&W "Mountains".
|Class||Qty.||Road Numbers||Year Built||Builder|
These were the only new locomotives the NYO&W bought during its last few decades of operation. They were identical to the New York Central's L-2s and possessed a similar "superpower" boiler layout featuring the Type E superheater.
Five (452, 454-455, 459-460) were sold to the Bangor & Aroostook in June 1945 as class M-2, but they barely outlasted the five that were scrapped by the NYO&W in 1947-1948.
Compared to other Mountains of the time, these were relatively small and light engines. Still they were modern power and equipped with a generous amount of superheater surface.
In June 1945, when the NYO & W was beginning to dieselize, it sold five of the class (401, 404, 406-407, and 409) to the Savannah & Atlanta as that railroad's 445-449. 410 was scrapped in February 1947 and the others went in April and August 1948.
|Principal Dimensions by Steve Llanso of Sweat House Media|
|Railroad||New York, Ontario, & Western||New York, Ontario, & Western|
|Number in Class||10||10|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||18 / 5.49||18 / 5.49|
|Engine Wheelbase (ft / m)||42 / 12.80||39.75 / 12.12|
|Ratio of driving wheelbase to overall engine wheebase||0.43||0.45|
|Overall Wheelbase (engine & tender) (ft / m)||80.60 / 24.57||78.46 / 23.91|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)||59,900 / 27,170||52,100 / 23,632|
|Weight on Drivers (lbs / kg)||239,500 / 108,636||208,000 / 94,347|
|Engine Weight (lbs / kg)||360,000 / 163,293||317,000 / 143,789|
|Tender Loaded Weight (lbs / kg)||239,900 / 108,817||212,400 / 96,343|
|Total Engine and Tender Weight (lbs / kg)||599,900 / 272,110||529,400 / 240,132|
|Tender Water Capacity (gals / ML)||12,500 / 47.35||12,500 / 47.35|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||20 / 18.20||16 / 14.50|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||100 / 50||87 / 43.50|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||69 / 1753||69 / 1753|
|Boiler Pressure (psi / kPa)||225 / 15.50||200 / 13.80|
|High Pressure Cylinders (dia x stroke) (in / mm)||27" x 30" / 686x762||27" x 28" / 686x711|
|Tractive Effort (lbs / kg)||60,618 / 27495.89||50,290 / 22811.19|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.95||4.14|
|Firebox Area (sq ft / m2)||353 / 32.81||292 / 27.14|
|Grate Area (sq ft / m2)||75.30 / 7||67 / 6.23|
|Evaporative Heating Surface (sq ft / m2)||4555 / 423.33||3693 / 343.22|
|Superheating Surface (sq ft / m2)||1931 / 179.46||1014 / 94.24|
|Combined Heating Surface (sq ft / m2)||6486 / 602.79||4707 / 437.46|
|Evaporative Heating Surface/Cylinder Volume||229.12||199.03|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||16,943||13,400|
|Same as above plus superheater percentage||22,025||16,348|
|Same as above but substitute firebox area for grate area||103,253||71,248|