Crank pin.—Diameter, 1/4 in.; length of bearing surface, 1/2 in.
Connecting rod.—Diameter, 5/16 in.; length between centers, 5-1/2 in.
Shaft.—Diameter, 5/8 in.; diameter of bearings, 1/2 in.; length. 6 in.; distance from bed to center of shaft, 1-1/2 in.
Flywheel.—Diameter, 8 in.; weight, 10 lb.
Valve.—Diameter of chamber, 9-16 in.; length, 1-1/4 in.; width of valve face working over supply port, 3/32 in.; width of space under valve, 3/8 in.; length of the same, 1 in.; distance from center of valve spindle to center of eccentric rod pin, 3/4 in.
Ports, supply—Width, 1/16 inch.; length, 1 in. Exhaust.—Width, 1/8 in.; length, 1 in.; space between ports, 5-16 in.
Pipes.—Steam supply, 1/4 in.; exhaust, 3/8 in.
Eccentric.—Stroke, 3/4 in.; diameter, 1-5/16 in. length of eccentric rod between centers, 8-3/8 in.
Cut off, 5/8
Thickness of base plate, 1/4 in.