Hudson Hunslet 4wDM Shunters

Robert Hudson began producing narrow gauge locomotives for industrial use in 1911, at first steam locomotives in partnership with Hudswell Clarke. Later locomotives with internal combustion engines were built, these in partnership with the likes of Kerr Stuart. From 1937 Hudson went into partnership with the Hunslet Engine Company and the locomotives began to carry a Hudson Hunslet badge. These were simple locomotives usually powered by a 20 hp/15 kW) Alisa Craig diesel with chain drive.
Hudson Hunslet 3621 (1947) at the Statfold Barn Railway

Information for typical Hudson Hunslet 4wDM
Builder: Robert Hudson / Hunslet Engine Company
Motor: Alisa Craig CF2 diesel
Power: 20 hp (15 kW)
Wheel arrangement: 4wDM

The locomotives were simple in design without any enclosed cabs though there were options to add these if the customer required. Later versions, built in the 1950s, had more powerful engines, up to 50 hp (37 kW) and were slightly more refined in design though largely unchanged. A number of these shunters have been preserved both in the UK and abroad.
Atlas, Hudson Hunslet 2463 (1944) served with the MOD at Long Marston

Cab of Atlas

Another view of 3621

Rear view of Atlas, both this and 3621 are 610mm gauge locomotives