A low-drivered freighter from the early 1890s, this locomotive still held a place in the 1940 diagram book. Apparently unchanged from its original configuration, the lone Ten-wheeler had recently been retired.
Apparently the Ten-wheeler never featured as a passenger engine on the Monon. Instead, they fielded low-drivered freight engines like this quintet. The first 4 had Southern gear, the last Walschaert (the single difference represented by the G-2-B designation.). In the superheater upgrade performed in 1921-1923, the road retained its 10" piston valves and relatively small grate.
107 April 1921
108 Feb 1922
109 Sept 1923
110 July 1923
111 Nov 1923
These Ten-wheelers date from the early days of the C I & L and were relatively ample for the early 1880s (they arrived in 1880-1881). As shown in the diagram, the design had an unusual firebox that may have actually been a Belpaire type. The steam dome rode over the first two driven axles just behind the sand dome. The sketch, which is nicely detailed, illustrates the capped stack that a few US railroads (the ACL, for one) adopted as a signature. The Monon was especially well known this fillip to what was often simply a tapered pipe.
The diagram also notes that several in the class received new boilers, the first (123) in 1897, the last (124) in 1904. Locomotives with 55" drivers were classed G-3; those with 51" drivers were designated G-4.
In the same year that Rogers delivered the Eight-wheeler shown in Locobase 8297, the builder supplied this quintet of Ten-wheelers of very nearly the same power dimensions. The boiler was bigger, of course, as was the adhesion weight. Later on, the single G-5-A (132) had 19" cylinders and was refitted with Southern outside valve gear.
Among the Monon's Ten-wheelers, this pair seems to have been the only class built as a mixed-traffic locomotive. Also, because it came somewhat later, it had more cylinder volume, a higher boiler pressure, larger grate and boiler ...much more of a 20th-Century design.
Drury (1993) states that these had 69" drivers and later were retrofitted with 51" wheels. But the diagram shows 63", a size supported by the diagram's tractive effort figure . The two served the Monon until 1942 and 1948, respectively.
| Specifications | |||||
|---|---|---|---|---|---|
| Class | G-1 | G-2-A/-B | G-3/G-4 | G-5 | G-6 |
| Locobase ID | 8299 | 8300 | 8301 | 8302 | 8303 |
| Railroad | Chicago, Indianapolis & Louisville (Monon) | Chicago, Indianapolis & Louisville (Monon) | Chicago, Indianapolis & Louisville (Monon) | Chicago, Indianapolis & Louisville (Monon) | Chicago, Indianapolis & Louisville (Monon) |
| Whyte | 4-6-0 | 4-6-0 | 4-6-0 | 4-6-0 | 4-6-0 |
| Road Numbers | 100 | 107-110, 111 | 115-126 | 131-135 | 140-141 |
| Gauge | Std | Std | Std | Std | Std |
| Builder | Burnham, Williams & Co | Monon | Rogers | Rogers | Brooks |
| Year | 1893 | 1921 | 1880 | 1890 | 1900 |
| Valve Gear | Stephenson | Southern | Stephenson | Stephenson | Stephenson |
| Locomotive Length and Weight | |||||
| Driver Wheelbase | 14.42' | 13' | 13.58' | 13' | 14.50' |
| Engine Wheelbase | 25.08' | 23.75' | 23.54' | 23.75' | 24.75' |
| Ratio of driving wheelbase to overall engine wheebase | 0.57 | 0.55 | 0.58 | 0.55 | 0.59 |
| Overall Wheelbase (engine & tender) | 49.37' | 58.67' | 47.02' | 52.67' | 52.53' |
| Axle Loading (Maximum Weight per Axle) | |||||
| Weight on Drivers | 92000 lbs | 132000 lbs | 102000 lbs | 115000 lbs | 123000 lbs |
| Engine Weight | 121000 lbs | 164000 lbs | 133000 lbs | 139300 lbs | 153000 lbs |
| Tender Light Weight | 80000 lbs | 147000 lbs | 70400 lbs | 92800 lbs | 96000 lbs |
| Total Engine and Tender Weight | 201000 lbs | 311000 lbs | 203400 lbs | 232100 lbs | 249000 lbs |
| Tender Water Capacity | 2800 gals | 7500 gals | 4500 gals | 5000 gals | |
| Tender Fuel Capacity (oil/coal) | 8 tons | 10 tons | 8 tons | 7 tons | 8 tons |
| Minimum weight per yard of rail on which locomotive could run | 51.11 lb rail | 73.33 lb rail | 56.67 lb rail | 63.89 lb rail | 68.33 lb rail |
| Geometry Relating to Tractive Effort | |||||
| Driver Diameter | 51" | 51" | 55" | 51" | 63" |
| Boiler Pressure | 180 psi | 200 psi | 180 psi | 160 psi | 200 psi |
| Cylinders (dia x stroke) | 18" x 24" | 19.5" x 24" | 18" x 24" | 20" x 24" | 20" x 26" |
| Tractive Effort | 23328 lbs | 30420 lbs | 21631 lbs | 25600 lbs | 28063 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.94 | 4.34 | 4.72 | 4.49 | 4.38 |
| Heating Ability | |||||
| Firebox Area | 150 sq. ft | 155 sq. ft | 120 sq. ft | 175 sq. ft | 183 sq. ft |
| Grate Area | 19 sq. ft | 30 sq. ft | 16 sq. ft | 27.50 sq. ft | 33 sq. ft |
| Evaporative Heating Surface | 1671 | 2019 | 1690 | 2102 | 2531 |
| Superheating Surface | 463 | ||||
| Combined Heating Surface | 1671 | 2482 | 1690 | 2102 | 2531 |
| Evaporative Heating Surface/Cylinder Volume | 236.40 | 243.38 | 239.09 | 240.87 | 267.72 |
| Computations Relating to Power Output (More Information) | |||||
| Robert LeMassena's Power Computation | 3420 | 6000 | 2880 | 4400 | 6600 |
| Same as above plus superheater percentage | 3420 | 7119.26 | 2880 | 4400 | 6600 |
| Same as above but substitute firebox area for grate area | 27000 | 36782.84 | 21600 | 28000 | 36600 |
| Power L1 | 5240.27 | 14264.74 | 5345.48 | 4639.49 | 7654.65 |
| Power MT | 376.72 | 714.73 | 346.61 | 266.83 | 411.60 |
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