Boxhill (5 Gauge)

Overview
Boxhill was a 0-6-0 design by Martin Evans based upon LB&SCR Terrier tank locomotives. It was described in Model Engineer Volumes 129-130.

Specifications

 * Cylinder bore: 1"
 * Driving Wheel diameter is 4.187"
 * Boiler working pressure: 90psi

Drawing Errors
The drawings omit to show a hole to let the tank balance pipes through the frames to the tank under the bunker. This should be addressed during the initial frame cutting stage.

Deviations from prototype
The cab roof is shown as flat when seen from the front, however on the prototype it is clearly an arc.

Notes for prospective builders

 * The castings most commonly available do not have much spare metal on them, so there is not a lot of margin for error.
 * There have been incidents in which the press fit valve spindle glands have come adrift; these are best silver soldered in place.