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7 1/4 inch narrow gauge 0-4-2T "Tom Rolt" - stock code 11842

In 1991 the Talyllyn Railway outshopped their then new locomotive, No.7 "Tom Rolt", an 0-4-2T incorporating parts from an Andrew Barclay well tank.

The largest, most powerful engine on the fleet, No.7 provided important support for the vintage locomotives that run on the railway - none younger than 100, with two now over 150 years old

We originally bought this 7 1/4 inch gauge model from the builder back in 2018 - we'd previously sold his super Alco in the same gauge which regular readers may remember.

At that time the engine was finished in a brighter shade, it's since been repainted into the attractive bronze green with yellow lining livery carried by the prototype.

The boiler has had hydraulic and steam tests with new certification issued. Coupling rods have been re-bushed in bronze, the vacuum ejector and gauge have been replaced - the former ineffective, pulling barely 8 inches of vacuum when it arrived with us, the latter inaccurate.

The engine steams freely and runs very well. The injectors are reliable, picking up from a remarkable 30psi right up to working pressure.The twin spring type safety valves are effective, opening and closing positively; twin whistles are fitted, of mellifluous tone.

Complete with a slate wagon style driving truck, the engine is supplied with 12 months warranty, firing irons and a starter kit of coal, oil and water treatment.

If required we would be more than happy to include half a day's training at our works on the firing, driving and disposal of the engine for a new owner.


gauge 7 1/4 inch
length/inches 62
width/inches 17 1/2
height/inches 30 1/2
weight/kg est 300
wheel material cast iron
axlebox type plain
cylinder material cast iron
valve type slide
valve gear Walschaerts
reverser type pole
lubricator type mechanical
injector(s) 2
boiler number N82-100-9S
year built 2001
boiler maker Holt
CE mark n/a pre-2002
working pressure/psi 100
boiler type locomotive
boiler material steel
boiler construction welded, expanded tubes
hydraulic test valid to 27-Mar-2026
steam test valid to 15-Jun-2025
safety valve(s) 2
safety valve type spring
whistle 2