VR DDE Class Superheating E-spec - 1 (TS09)

VR DDE Class Superheating E-spec - 1 (TS09)

Due to the groth of the Suburban traffic and heavier rollingstock the Victorian Railways DDE was an adoption of the DD Class locomotive by adding a pair of trailing wheels and suitable water tanks and coal bunker to be used on Surburban Lines from 1908 to replace the E Class 2-4-2 Tanks, After Electrification from 1919 the DDE where converted to Shunting by removing the Wheel reverser with a Lever reverser and fitted with shunter's Steps, few where converted to superheating from 1923.

This e-spec is for the 2 DDE engines that where converted to Superheating and where renumbered 257 and 258 'ex 713 and 714' and later recorded to D4 in 1930.

Boiler Type: Superheated
Boiler Tubes: Unknown at 2 inches diameter
Boiler Flues: 21 at 6 inches diameter
Boiler Volume: 3,739 Litres
Firebox: 120.00 sq ft
Tubes: 1034.00 sq ft
Elements: 334.00 sq ft
Grate Area 22.50 sq ft
Working Boiler Press: 175 PSI
Safety Valve Low: 175 PSI
Safety Valve High: 178 PSI
Bore x Stroke: 18in x 26in
Driving Wheels: 5ft 1.75in
Tractive Power: 19,656lbs @ 80% Boiler Pressure
Top Speed: 60 mph
Main Res: 97 PSI Max
Brake Pipe: 72 PSI Max
Brake Cylinder: 50 PSI Max

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VR DDE Class Superheating E-spec - 1 (TS09)
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