Sold January 2025 Back to Archive

6 inch scale Ruston Proctor SD tractor - stock code 11325

We first bought this engine in 2016 from a well known collector on the South Coast - in as-new condition, the engine had apparently only been test-steamed from new - there are pictures and a writeup dating from that time in the archive.

Sold shortly after arriving, it came back to us last year from the man we'd sold it to. The boiler had a cladding off inspection at that time, with ultrasonic thickness survey followed by hydraulic and steam tests - it sold a couple of weeks later.

It's now back with us again as its owner looks to downsize to a smaller engine. The pictures opposite and video date from last summer, the engine remains in excellent condition throughout; it steams freely, runs beautifully - and is still a delight to drive!

Only changes are to the tender-mounted seat, now replaced with one mounted on a separate close-coupled trolley, taking weight off the back of the engine, improving steering and reducing any tendency for the front end to lift when starting.

We’ve again hydraulic and steam-tested the boiler, issuing new certification, as well as fitting one of our graphite-filled PTFE regulators – pretty much standard procedure on many of the larger miniatures that pass through our hands these days, they provide leak free, silky smooth operation.

Supplied with a starter kit of coal and steam oil, firing irons and 12 months warranty. If required, we would be pleased to include a half day's training in the firing, driving and maintenance of the engine.


scale 6 inch scale
length/inches 73
width/inches 29
height/inches 50
weight/kg 500
wheel material steel
axlebox type plain bearing
cylinder material cast iron
valve type slide
valve gear Stephensons
reverser type pole
lubricator type mechanical
injector(s) 1
boiler number N86-100-150-S-99
year built 1996
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 28-Oct-2026 (cladding off inspection 30-May-2023)
steam test valid to 5-Jan-2026
fusible plug yes
safety valve(s) 2
safety valve type Ramsbottom
mechanical pump 1
whistle yes