A low-drivered freighter from the early 1890s, the safety valve setting for this engine displayed two unusual qualities: 1) Except for Vauclain compounds, 180 psi was a higher setting than most US locomotives used in the early 1890s, and 2) The Monon apparently never reduced that setting. Baldwin's specs gave the original heating surface area as 1,653 sq ft (153.57 sq m). They also warned "Last consol engines [Locobase 8306]gave trouble with leaky mud rings. Be particular to have these tight."
When the shops refitted the 100 in 1924, they installed 51" (1,295 mm) drivers, which raised starting tractive effort to 23,400 lb (10,614 kg). Otherwise apparently unchanged from its original configuration, the lone Ten-wheeler was scrapped in October 1936.
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 by Steve Llanso of Sweat House Media|
|Railroad||Louisville, New Albany & Chicago (Monon)||Chicago, Indianapolis & Louisville (Monon)||Chicago, Indianapolis & Louisville (Monon)||Chicago, Indianapolis & Louisville (Monon)||Chicago, Indianapolis & Louisville (Monon)|
|Number in Class||1||5||12||5||2|
|Road Numbers||36/100||107-110, 111||115-126||131-135||140-141|
|Builder||Burnham, Williams & Co||Monon||Rogers||Rogers||Brooks|
|Locomotive Length and Weight|
|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||4000 gals||7500 gals||4500 gals||5000 gals|
|Tender Fuel Capacity (oil/coal)||8 tons||10 tons||8 tons||7 tons||8 tons|
|Minimum weight of rail (calculated)||51 lb/yard||73 lb/yard||57 lb/yard||64 lb/yard||68 lb/yard|
|Geometry Relating to Tractive Effort|
|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||21245 lbs||30420 lbs||21631 lbs||25600 lbs||28063 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.33||4.34||4.72||4.49||4.38|
|Firebox Area||149.60 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||1670 sq. ft||2019 sq. ft||1690 sq. ft||2102 sq. ft||2531 sq. ft|
|Superheating Surface||463 sq. ft|
|Combined Heating Surface||1670 sq. ft||2482 sq. ft||1690 sq. ft||2102 sq. ft||2531 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||236.26||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||7140||2880||4400||6600|
|Same as above but substitute firebox area for grate area||26928||36890||21600||28000||36600|