BR 62

BR Class 62
Scale/Gauges	1/32, 45 mm
Weight	5.5 kg.
Length o.b.	535 mm
Height	143 mm
Width	97 mm
Wheel Arrangement	4-6-4 Leaf Spring action
Driving Wheels	55 mm
Leading & Tender Wheels	24.5 mm
Cylinder	2 cylinders, with crossports Bore 12 mm x Stroke 20 mm
Valve gears	Heusinger
Boiler Type	C Type
Pressure	3 kg/cm2
Water capacity	280 cc (at 80% full)
Fittings	2 x Safety valves, Regulator Valve, Blower Valve, Water Check Valve, Pressure Gauge, By-Pass Valve Blowdown Valve Hand pump in rear bunker
Feed Water Pump	Axle Driven Pump mounted on the leading driving axle (bore 5 mm x ram stroke 6 mm.)
Burner	3 wick tubes
Lubricator	Roscoe displacement type
Water Tank	300 cc
Fuel Tank	140 cc of Methylated spirit
Working Lamps	2 x head, 2 x tail and 6 x running board lights
Minimum Radius	2.0 metres

Like the Prussian T-18 (later known as the BR 78), the Reichsbahn BR 62 “Mammoth” was conceived and built with a 4-6-4T wheel arrangement and an emphasis on economics and simplicity. For distances up to 160 km tank locomotives were commonly used in Europe since they eliminated the weight of the tender and allowed to locomotive to operate at approximately the same speed in both forward and reverse directions thus eliminating the need to turn the locomotive. In 1912 in Prussia, more than 500 T-18's were constructed and because of their phenominal success, the Reichsbahn railway unification office in Berlin selected another 4-6-4T configuration, known as the BR 62, to be designed during the 1920's. The design of the BR 62 was based on the T 18 however many clever improvements were made. Unfortunately a serious economic crisis was beginning in Germany in the late 1920's and only 15 examples of the BR 62 were built by Henschel at their Kassel works in 1927 despite the locomotives excellent performance.

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