O.S. Porter 2-6-0 Mogul
(this is a locomotive I once had and sold to build another)

SpecificationsScale: 1/12 full size (1"=1') [3/4" scale]
Gauge: 3-1/2"
Prototype: Porter 2-6-0 Built in 1880 by the Porter Locomotive Works, Pittsburgh, Pennsylvania, USA
Drive Wheels: 3.15"

Cylinder (twin):

• Bore: 0.906"
• Stroke: 1.339"
• Drain cocks: 4 (manual)

Slide Valve:

• Valve travel: 0.315"
• Cut off: Maximum 85%
• Steam lap: 0.031"
• Exhaust lap: 0.020"
• Port opening: 0.098"

Valve gear: Stephenson's loco type

Boiler: All copper, silver soldered. Three saftey valves.

• Working pressure: 70 lb/in2
• Hydrostatic test pressure: 140 lb/in2
• Water capacity 42 oz
• Barrel diameter 3.346"
• Grate size: 5.43" X 1.85"
• Fuel: Coal
• Throttle: Screw type
• Tubes: D 0.748" D 0.354"

Water feed:

• Axle drive pump D 0.315" x 0.472"
• Hand pump D 0.472" x 0.787

Lubricator: 2 hydrostatic

Whistle: steam D 0.472" x 3.937"

Brakes: hand

Weight:

• Engine 38.6 lb
• Tender 18.5 lb
• Tender water capacity 49 oz 

Size:

• Length: 41.3"
• Width: 6.9"
• Height: 11.8"
• Wheelbase: 9.45"

The engine was manufactured by O.S. Engines MFG. CO., LTD. in Osaka, Japan. It took me about 60 man hours to assemble. Since assembly, I have made some minor adaptions, including removing the original mechanical lubricator and adding two hydrostatic lubricators. The engine is a real beauty and runs like a charm. When I fire her properly, I can run for hours on end without a break. When she is running she has great sound with a mean little bark.

More pictures:

Front | Angle | Top | Inside Cab