Derby 4F (3.5 Gauge)

The Derby 4F is a Don Young design using a large number of LBSC castings. It is based upon the LMS Fowler Class 4F 0-6-0 medium freight locomotive. This locomotive also formed the basis of the Nick Feast designed Bulleid Q1.
 * Cylinder Bore: 1.125"
 * Driving Wheel diameter: 3.937"