Louisville and Nashville class M-1

Last updated
Louisville & Nashville M-1
Coal Tender - 10572149515.jpg
Louisville and Nashville No. 1966's tender on display outside the Southeastern Railway Museum in Duluth, Georgia
Type and origin
References: [1]
Power typeSteam
Builder
Serial numberBaldwin: 64605-64618, 64723-64726, 70178-70179
Lima: 9349-9370
Build date1942–1949
Total produced42
Specifications
Configuration:
   Whyte 2-8-4
   UIC 1′D2 h2
Gauge 4 ft 8+12 in (1,435 mm)
Leading dia. 36 in (0.914 m)
Driver dia.69 in (1.753 m)
Trailing dia. 42 in (1.067 m)
Tender wheels36 in (0.914 m)
Wheelbase 42 ft 4 in (12.903 m)
Length108 ft 2.25 in (32.98 m)
Width10 ft 3 in (3.12 m)
Height15 ft 10 in (4.83 m)
Axle load Baldwin: 68,170 lb (30.92 t; 30.43 long tons)
Lima: 68,307 lb (30.984 t; 30.494 long tons)
Adhesive weight Baldwin: 268,200 lb (121.7 t; 119.7 long tons)
Lima: 268,740 lb (121.90 t; 119.97 long tons)
Loco weightBaldwin: 447,200 lb (202.8 t; 199.6 long tons)
Lima: 448,100 lb (203.3 t; 200.0 long tons)
Tender weight384,200 lb (174.3 t; 171.5 long tons)
Total weightBaldwin: 831,400 lb (377.1 t; 371.2 long tons)
Lima: 832,300 lb (377.5 t; 371.6 long tons)
Fuel type Coal
Fuel capacity25 short tons (23 t)
Water cap.22,000 US gal (83,000 L; 18,000 imp gal)
Firebox:
  Grate area90.2 sq ft (8.38 m2)
Boiler98 in (2,489 mm)
Boiler pressure265 lbf (1.18 kN)
Heating surface:
  Firebox463.3 sq ft (43.04 m2)
  Total surface4,671 sq ft (434.0 m2)
Superheater1,908 sq ft (177.3 m2)
Cylinders Two, outside
Cylinder size 25 in × 32 in (635 mm × 813 mm)
Valve gear Walschaerts
Performance figures
Power output4,503 hp (3,358 kW) at 42 mph
Tractive effort 65,290 lbf (290.42 kN), 79,390 lbf (353.14 kN) with booster
Factor of adh. 4.11
Career
Operators Louisville and Nashville Railroad
Numbers1950–1991
NicknamesBig Emmas
Retired1950–1956
Scrapped1956-1957
DispositionAll scrapped, except for seven tenders; five converted to canteens

The Louisville and Nashville M-1 was a class of forty-two 2-8-4 steam locomotives built during and after World War II as dual-service locomotives. They were nicknamed "Big Emmas" by crews and were built in three batches between 1942 and 1949.

Contents

History

Construction

The first two batches were built by Baldwin Locomotive Works during World War II. The first batch of ten (Nos. 1950–1959) was constructed in 1942. Upon arrival to the L&N, these were initially employed on high-speed freight service. The second batch also consisted of ten members (Nos. 1960–1969). These were built in 1944 and were pressed into passenger service. The third batch consisted of twenty-two locomotives built by Lima in 1949 (Nos. 1970–1991). These were the second to last class of Berkshires to be built and ordered by Lima, the last being the New York, Chicago and St. Louis Railroad S-3 Class. The S-3 Class was also the last class of locomotives ordered from Lima for domestic rails. The last member, No. 779, is still around today. The Big Emmas proved to be the most expensive Berkshires built due to the fact that they were fitted with every refinement known to the steam locomotive builder's craft. [2] These included roller bearings, cast-steel frames and cylinders, large fireboxes, and a large boiler capacity. Upon arrival to the L&N, the M-1s lacked trailing truck booster units. However, C-2-L units were soon fitted.

Big Emma vs Van Sweringen Berkshires

The "Big Emmas" bore a strong resemblance to the Van Sweringen Berkshires, which were Berkshires designed for the Nickel Plate Road, Wheeling and Lake Erie Railway, Pere Marquette Railway, and Chesapeake and Ohio Railway, all being based on the Erie Railroad’s 2-8-4s, which also influenced the C&O’s T-1 class 2-10-4s. Both designs used 69-inch driving wheels, the same tube diameter, and the same number and size of the flues. They also had the same cylinder bore as the Nickel Plate Road Berkshires and the Wheeling & Lake Erie K-1s, the latter of which were effectively copies of the Nickel Plate Road S Class. The Nickel Plate Road S-2s and Chesapeake & Ohio K-4s, which called their 2-8-4s "Kanawhas", were also equipped with roller bearings like with the Big Emmas. However, the Van Sweringen designs all had Baker valve gear, an engine wheelbase of 42 feet, a boiler pressure of 245 psi, a firebox with 90.3 square feet of grate area, and a cylinder stroke of 34-inches. The Pere Marquette and Chesapeake & Ohio Kanawhas also had a bore of 26-inches, and the Berkshires on the Nickel Plate Road, Pere Marquette, and Chesapeake & Ohio all had 73 tubes. The Wheeling & Lake Erie K-1 Class, meanwhile had 67 tubes. The Big Emmas, meanwhile, had Walschaerts valve gear, a 42-foot 4-inch engine wheelbase, a boiler pressure of 265-psi, a firebox grate area of 90.2 square feet, 25-by-32-inch cylinders, and 62 tubes inside the boiler.

Career

In service, the M-1s were used on all sorts of duties. [1] These included the Southland and Flamingo passenger trains between Cincinnati, Ohio and Corbin, Kentucky, fast freight trains, and coal trains around Eastern Kentucky, where they regularly hauled trains in excess of 8,000 tons. [1] At 42 miles per hour, the Big Emmas were rated at 4,503 horsepower. [3]

Withdrawals and remaining tenders

VMTX No. 250001, a former L&N Big Emma tender use as an auxiliary water tender for Norfolk and Western 611 Norfolk and Western Railway No. 611 second tender - October 2016.jpg
VMTX No. 250001, a former L&N Big Emma tender use as an auxiliary water tender for Norfolk and Western 611

Unfortunately, by the time the last batch of Big Emmas were delivered, the L&N started to invest more in diesel power. The first batch was retired by December 1950, and the final two batches were retired by November 1956, when steam officially ended on the railroad. By 1957, all of the Big Emmas had been cut up, although most of their tenders were reused for maintenance of way service on the L&N. [4] [5] Some of them were eventually converted to canteens to supply extra water for steam locomotives that were used in main line excursion service such as Southern Railway 4501, Norfolk and Western 611 and 1218; Nickel Plate Road 765 and 587; Chesapeake and Ohio 2716 and 614; and Milwaukee Road 261. [6] The two tenders from Nos. 1966 and 1984 are on static display at the Southeastern Railway Museum in Duluth, Georgia and the Kentucky Railway Museum in New Haven, Kentucky, respectively.

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References

  1. 1 2 3 Prince (2000), p. 131.
  2. "Louisville & Nashville 2-8-4 "Berkshire" Locomotives in the USA". www.steamlocomotive.com. Retrieved 2021-03-24.
  3. "CSXTHS - Rail Fanning - L&N - Crooked Hill, 1944". www.csxthsociety.org. Retrieved 2021-03-24.
  4. Johnson (2004) , pp. 67–68.
  5. Johnson (2004) , pp. 82–83.
  6. "Hulcher Services, CSX Team Up With Kentucky Steam to Move Historic Rail Cars". Kentucky Steam Heritage Corp. September 28, 2018. Archived from the original on January 16, 2021. Retrieved June 29, 2022.

Bibliography

Further reading