This example shows a tyre width of 3.5 mm for Gauge 0 Fine.
For Scale7 remove more metal from the back of the wheel to give a tyre thickness of 3.2 mm instead of 3.5 mm.
6′ 8½″ diam., 22 oval spokes, rectangular inner rim, 4″ apparent tread.
Hub 18″ face dia., 1½″ out from the tyre. Pin in line at 12½″.
Casting: 47.0 mm tread dia., 42.3 mm i/d., 0.9 mm out from the tyre.
Casting prices and stock . GWR loco sets, price list
Scan of the castings in sets for a GWR 4-4-2 La France.
4 Feb 2015