The 82-mile-long A&StAB Railway -- aka the Bay Line or the Panama Canal Route -- ran from Dothan, Alabama to Panama City, Florida and was completed in 1908 by A B Steele. It was chiefly a lumber road and never did connect Panama City with Atlanta on its own lines.
The Bay Line went to Baldwin for a small Ten-wheeler and the builder offered a design that was then in production for some North Carolina short lines; unlike many loggers, these engines had straight stacks. It was satisfactory enough that the railroad bought a third engine of the same design a year later. This trio, and a fourth engine (120) with a similar boiler but larger cylinders, Walschaert gear, and other changes that came along in 1913 (Locobase 16014), were the only locomotives to be bought new by the A&StAB.
The 105 eventually settled down in Florida when it was bought by the Fullers Earth Company of Marianna, Fla and took on the number 27. The 106 was sold in 1935 to St Mary's Railroad of Georgia, which connected St Mary with Kingsland. 107 was scrapped, probably when the Bay Line dieselized in 1947 (the first in the US to do so completely).
The first three Ten-wheelers delivered by Baldwin in 1907-1908 to this design appear in Locobase 13199. When the Bay Line ordered a fourth engine in 1912, it came with several changes. Although the boiler and firebox were untouched, cylinder volume increased, the inside link motion had been replaced by outside radial valve gear. In place of the straight stack mounted on the earlier trio, the 120 sported the spark-arresting Radley & Hunter cabbage stack.
At the end of its service on the Bay Line, the 120 was sold to the Sandersville Railroad, a four-mile line in Georgia.
|Principal Dimensions by Steve Llanso of Sweat House Media|
|Railroad||Atlanta & St Andrews Bay||Atlanta & St Andrews Bay|
|Number in Class||3||1|
|Road Numbers||105-106, 107||120|
|Builder||Burnham, Williams & Co||Burnham, Williams & Co|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||10.50 / 3.20||10.50 / 3.20|
|Engine Wheelbase (ft / m)||20.58 / 6.27||20.58 / 6.27|
|Ratio of driving wheelbase to overall engine wheebase||0.51||0.51|
|Overall Wheelbase (engine & tender) (ft / m)||46.33 / 14.12||48.58 / 14.81|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)|
|Weight on Drivers (lbs / kg)||78,000 / 35,380||89,000 / 40,370|
|Engine Weight (lbs / kg)||103,000 / 46,720||115,000 / 52,163|
|Tender Loaded Weight (lbs / kg)||80,000 / 36,287||90,000 / 40,823|
|Total Engine and Tender Weight (lbs / kg)||183,000 / 83,007||205,000 / 92,986|
|Tender Water Capacity (gals / ML)||4000 / 15.15||4500 / 17.05|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||8 / 7.30||8 / 7.30|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||43 / 21.50||49 / 24.50|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||56 / 1422||56 / 1422|
|Boiler Pressure (psi / kPa)||180 / 12.40||180 / 12.40|
|High Pressure Cylinders (dia x stroke) (in / mm)||17" x 24" / 432x610||18" x 24" / 457x610|
|Tractive Effort (lbs / kg)||18,950 / 8595.59||21,245 / 9636.58|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.12||4.19|
|Firebox Area (sq ft / m2)||116.80 / 10.86||116 / 10.78|
|Grate Area (sq ft / m2)||21.20 / 1.97||21.20 / 1.97|
|Evaporative Heating Surface (sq ft / m2)||1378 / 128.07||1377 / 127.93|
|Superheating Surface (sq ft / m2)|
|Combined Heating Surface (sq ft / m2)||1378 / 128.07||1377 / 127.93|
|Evaporative Heating Surface/Cylinder Volume||218.56||194.81|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||3816||3816|
|Same as above plus superheater percentage||3816||3816|
|Same as above but substitute firebox area for grate area||21,024||20,880|