VR D3 Class E-spec - 1 (TS12)

VR D3 Class E-spec - 1 (TS12)

Despite the success of superheating the DD boiler, it was still somewhat limited in steam raising capabilities. In 1922, a new design of 2-8-0 branch line goods locomotive the K class was introduced, with noticeably superior boiler performance to that of the DD.

In 1929, a Dd class locomotive was rebuilt with a larger boiler derived from the K class design. Based on the success of the rebuild, a further 93 D1 or D2 class locomotives were converted from 1930 to 1947 and became D3.

The D3 were economical and efficient, but also renowned for their superior performance. They could be worked hard and were a favourite with crews. Although restricted to a maximum permitted speed of 60mph.

This e-spec is setup for the D3's which kept there original 18in cylinders and raised pressure of 190 Pounds per Square Inch.

Boiler Type: Superheated
Boiler Tubes: Unknown at 2 inches diameter
Boiler Flues: 21 at 6 inches diameter
Boiler Volume: 6,941 Litres
Firebox: 123.00 sq ft
Tubes: 1246.00 sq ft
Superheater: 228.00 sq ft
Grate Area 25.00 sq ft
Boiler Press: 190 PSI
Safety Valve Low: 191 PSI
Safety Valve High: 194 PSI
Bore x Stroke: 18in x 26in
Driving Wheels: 5ft 1in
Tractive Power: 22,670lbs @ 85% Boiler Pressure
Top Speed: 60mph
Main Res: 100 PSI Max
Brake Pipe: 72 PSI Max
Brake Cylinder: 50 PSI Max

Author: -

VR D3 Class E-spec - 1 (TS12)
• data.txt 2.46KB
• numbers.txt 580 bytes
• screenshot.jpg 46.03KB