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.
4′ 0″ diam., 12 or 15 oval spokes, low hump inner rim, apparent tread 5″.
Hub 12½″ face dia., 2½″ out from the tyre, pin in line at 11″.
Casting: 28.0 mm tread diam., 22.2 mm i/d., hub 1.6 mm out from the tyre, pin at 5.8 mm.
Casting prices and stock: 12 spokes . 15 spokes . GER loco sets, price list
More information in sets for GER R24, S56/LNER J67,8,9 shunters with 12 spokes . with 15 spokes
27 Mar 2013