Introduced: 1904
Number in Class: 1
Locomotive Specifications
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| Engine Weight: 53.6 tons |
Tender Weight: | Total Weight: 53.6 tons | Adhesive Weight: 38.0 tons |
| Length over Buffers: 37' 2" |
Total Wheelbase: 29' 5" | Engine Wheelbase: 29' 5" | Coupled Wheelbase: 11' 9" |
| Tender Wheelbase: | Driver Wheel Dia.: 43" | Cylinders HP: Two - 17" x 20" |
Cylinders LP: |
| Grate Area: 16.5 sq ft | Evaporative Area: 1080 sq ft |
Superheated Area: | Working Pressure: 200 psig |
| Tractive Effort: 21510 lbs f |
Coal Capacity: 2.5 tons | Oil Capacity: | Water Capacity: 930 gals |
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Remarks:
If ever a locomotive was well named it was Jumbo, the most powerful, most 'cussed' and discussed engine on the Manawatu Railway.
It had massive proportions which gave an impression of weight greater than her 53 tons. It was agreed by all that for sheer brute strength on the 1 in 36-40 climb out of Wellington, she took a lot of beating.
It was generally used in a pushing capacity assisting trains up to the summit near Khandallah, and the driver could use a device to de-couple from the train without stopping.
When taken over by the NZR and given Class 'Wj' with number 466, she was retained on the Paekakariki section for banking and double-heading.
Ex Wellington & Manawatu Railway Co. #3 (2nd) "Jumbo" The tractive effort was greater than the later NZR Class 'Ab'. It featured a bar frame which had some failures. |
