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 |
|---|---|---|---|---|
| Y | 4 | 401-404 | 1922 | ALCO |
| Y-1 | 6 | 405-410 | 1923 | ALCO |
| Y-2 | 10 | 451-460 | 1929 | ALCO |
Data from 1930 Locomotive Cyclopedia tables. See William D. Edson's roster in Railroad History Bulletin 175 for builder's numbers. (Thanks to Chris Hohl for providing valve gear ID.) The class was built as a single batch from 67986-67995 in July 1929.)
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.
Data from NYO&W 1 - 1943 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. (Thanks to Chris Hohl for his 11 November 2012 email querying the proper class ID for these two batches. Also thanks to Wes Barris for his 9 July 2021 email catching confusing typos in the works number list.) Works numbers were 63254-63257 (four Y in May 1922) and 64735-64740 in October 1923.
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 Middle Run Media | ||
|---|---|---|
| Class | Y-2 | Y/Y-1 |
| Locobase ID | 218 | 9010 |
| Railroad | New York, Ontario, & Western | New York, Ontario, & Western |
| Country | USA | USA |
| Whyte | 4-8-2 | 4-8-2 |
| Number in Class | 10 | 10 |
| Road Numbers | 451-460 | 401-410 |
| Gauge | Std | Std |
| Number Built | 10 | 10 |
| Builder | Alco-Schenectady | Alco-Schenectady |
| Year | 1929 | 1922 |
| Valve Gear | Baker | Baker |
| 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 wheelbase | 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 / Liters/MT) | 20 / 18 | 16 / 15 |
| 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 / 1550 | 200 / 1380 |
| 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 |
| Booster (lbs) | 11,250 | 11,250 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.95 | 4.14 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 40 - 2.25" / 57 | 174 - 2.25" / 57 |
| Flues (number - dia) (in / mm) | 199 - 3.5" / 89 | 38 - 5.5" / 140 |
| Flue/Tube length (ft / m) | 20.50 / 6.25 | 21.50 / 6.55 |
| 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 | 198.98 |
| 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 |
| Power L1 | 30,846 | 17,695 |
| Power MT | 1135.76 | 750.21 |