Simplex (5 Gauge)

Overview
Simplex is a freelance 5 Gauge locomotive designed by Martin Evans and serialised in Model Engineer magazine volumes 133-134. It is of 0-6-0 configuration and a popular first locomotive. It has 1.5" diameter cylinders and 4.375" driving wheels.

Super Simplex
An upgraded version of the Simplex called the Super Simplex is available. This has an enlarged boiler and firebox, larger bore cylinders and a six element superheater. This addresses some of the issues the Simplex had with maintaining a head of steam.

Drawing Errors

 * The Firehole door will foul the right hand clack valve. This is easy to avoid; put a couple of feed bushes on the boiler barrel between the smokebox and the tanks.