Bulleid Q1 (3.5 Gauge)

Overview
The Bulleid Q1 in 3.5 Gauge is a more recent design by Nick Feast. It represents the Bulleid Q1 Austerity locomotives brought in to assist with the War Effort. Intended to be easier to build for novices it is based upon Don Young's Derby 4F locomotive. It uses Joy Valve gear and inside cylinders.

Design Characteristics
The Q1 uses inside cylinders, however it uses Joy valve gear for simplicity of construction. The whole design of the Q1 focuses on a locomotive that will be relatively simple as a first time build. The Q1s biggest issue is a lack of weight to provide adhesive traction; this can be addressed by concealing additional weight, for example in the dummy sand boxes.

Details on building here.