No.6 ‘Douglas’

This 0-4-0WT was built in 1918 by Andrew Barclay & Co. Ltd. for the Airservice Construction Corps. From 1921 until 1945 it worked at the RAF railway at Calshot Spit, Southampton. After a period in store at Calshot it was bought in 1949 by Abelson & Co. (Engineers) Ltd. who presented it to the Talyllyn in 1953.  After overhaul and alteration from 2ft to 2ft 3in gauge, it entered service in 1954 and was named ‘Douglas’ at the donor’s request. Although smaller than the other locos it has performed well and was returned to service in 1995, having been fitted with a new boiler and turned out in its old Air Ministry Works & Buildings livery.

On 21st February 2018, it was the 100th Birthday of ‘Douglas’.  To commemorate the centenary a new livery reflecting its RAF heritage was commissioned.


Technical Details

MakerAndrew Barclay & Co.
Works number1431
Driving wheel diameter2′ 0″
Trailing wheel diameternil
Coupled wheelbase3′ 11 1/4″
Total wheelbase3′ 11 1/4″
Cylinder size (bore/stroke)6 7/8 x 10 3/4″
Heating surface130 sq. ft.
Working pressure160 psi
Tractive effort @ 85% BP3290 lbs
Weight8 tons
Length over buffers15′ 6″