EP Rentz 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 101 (Locobase 13716)

Data from Baldwin Locomotive Works datacard as digitized by the DeGolyer Library of Southern Methodist University, Volume 36, p.139. Works number was 36130 in February 1911.

At the same time E P Rentz bought the wood-burning Ten-wheeler for his Ocala Northern Railway (see Locobase 13715), he bought this 4-6-0. It was identical except for the use of 50" drivers (6" shorter) and a lowered boiler pressure. Clearly, this was the "special products" variant that would step carefully down the lightly built timber roads and pull the logs out.

Rentz sold the engine to locomotive rebuilder/reseller Georgia Car & Locomotive, which found a ready buyer in the Florida & Alabama of Baghdad, Fla. Years later, the 12 would be sold to the Shreveport, Houston & Gulf of Manning, Tex and later still would move to the Moscow, Camden & San Augustine of Camden, Tex. By that time, the 5 had acquired a handsome "cabbage stack".

Ultimately, the 5 was sold to the Polk County Museum in 1970 and went on display at Heritage Park.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13716
RailroadEP Rentz
Number in Class1
Road Numbers101
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase12.83'
Engine Wheelbase22.98'
Ratio of driving wheelbase to overall engine wheebase 0.56
Overall Wheelbase (engine & tender)45.40'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers72000 lbs
Engine Weight95000 lbs
Tender Light Weight57000 lbs
Total Engine and Tender Weight152000 lbs
Tender Water Capacity3000 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)40 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter50"
Boiler Pressure160 psi
Cylinders (dia x stroke)16" x 24"
Tractive Effort16712 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.31
Heating Ability
Firebox Area90 sq. ft
Grate Area15.50 sq. ft
Evaporative Heating Surface1222 sq. ft
Superheating Surface
Combined Heating Surface1222 sq. ft
Evaporative Heating Surface/Cylinder Volume218.80
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2480
Same as above plus superheater percentage2480
Same as above but substitute firebox area for grate area14400
Power L13992
Power MT366.70

If you have any railroad data such as diagram books, rail station plans or anything else that you would be willing to share, please contact us.