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1 1/2 inch scale Allchin traction engine "Royal Chester" - stock code 8529

A 1/2 inch scale Allchin agricultural engine, built to Hughes' "Royal Chester" design.

The engine was completed fifteen years ago, the builder already having produced a 1 inch scale "Minnie", followed by a 3 1/2 inch gauge LMS Jinty before tackling the Allchin.

Unsteamed from new, the engine is complete barring a pressure gauge. Motionwork turns over freely, the motion runs on air with various leaks from fittings and valve chest joint.

scale 1 1/2 inch & smaller
length/inches 27
width/inches 12
height/inches 18
weight/kg 30
cylinder material cast iron
valve type slide
valve gear Stephensons
reverser type pole
governor type Pickering
lubricator type mechanical
injector(s) 1
CE mark n/a - non-commercial
working pressure/psi 90
boiler type locomotive
boiler material copper
safety valve(s) 2
safety valve type Ramsbottom
mechanical pump 1
road speed(s) 2
differential yes