3′ 0″ diam., 9 oval spokes, vee inner rim, 4″ apparent tread, 6″ tyre width.
Hub 9½″ face dia., 1½″ out from the tyre.
Source: Duchess of Sutherland measured direct at Bressingham, Oct 1994.
Casting: 28.6 mm tread dia., 22.1 mm i/d, hub 1.2 mm out from the tyre.
Tyre widths for exact scale models at 1:32, 6″ = 4.76 mm.
Diagram of safe areas to be removed before machining with a form tool for Gauge One Standard standard
5 Apr 2013