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4 inch scale part-built Ruston steam tractor - stock code 7909

A 4 inch scale kit-built Ruston Proctor 3 ton steam tractor. At an advanced stage of assembly, the previous owner has run it on air.

Complete with assembly instructions and manufacturer's boiler certification
scale 4 inch
length/inches 48
width/inches 21
height/inches 26
cylinder material cast iron
valve type slide
valve gear Stephensons
reverser type pole
lubricator type mechanical
boiler number 51
boiler maker Winson Model Technology
CE mark n/a, pre-2002
working pressure/psi 120
boiler type locomotive
boiler material steel
boiler construction welded, welded tubes
safety valve(s) 2
safety valve type spring
mechanical pump 1
road speed(s) 2