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3 inch scale Allchin traction engine "Royal Chester" - stock code 7994

A finely made 3 inch scale Allchin, built to Hughes' highly detailed "Royal Chester" design, doubled up from the 1 1/2 inch scale drawings.

The engine appears to have been test steamed, possibly only once given the colour of firebox and smokebox. Both mechanically and cosmetically it's in ex-works condition - it runs beautifully on air.

Update - Ashley steamed it this afternoon, there's a short clip of it outside the works here. Steams particularly freely, runs very quietly. Only just stopped him taking it home for the weekend...



scale 3 inch
length/inches 53
width/inches 24
height/inches 34
cylinder material cast iron
valve gear Stephensons
reverser type pole
governor type Pickering
lubricator type mechanical
injector(s) 1
boiler number 7994
CE mark n/a - non-commercial
working pressure/psi 100
boiler type locomotive
boiler material copper
boiler construction silver soldered
hydraulic test valid to 30/Apr/22
steam test valid to 11/Aug/2019
fusible plug no
safety valve(s) 2
safety valve type Ramsbottom
mechanical pump 1
road speed(s) 2
differential yes