Diagrams Index . Home
1:22.6, Gauge 3
BR 4-6-2 Britannia driving wheel.

6′ 2″ diam., 20 oval spokes, vee shaped inner rim, apparent tread 3½″, tyre width 5½″.
Hub 16½″ face dia., level with the tyre, pin between at 14″.

Source: preserved loco. 70013 measured direct at Bressingham.

Casting: 83.2 mm tread dia., 75.3 mm i/d., hub level with the tyre, pin at 15.7 mm.

Gauge 3 loco set prices . Casting prices and stock

Scan of a casting in a set for a BR 4-6-2 Britannia class with a prototype photograph.

Scan of casting X71
Prototype wheel photo

Cross section diagram of casting X71

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27 Mar 2013