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 oval spokes, hump inner rim, apparent tread 4″.
Hub 12¾″ face dia., ¾″ out from the tyre.
Casting: 28.0 mm tread dia., 23.3 mm i/d, hub 0.4 mm out from the tyre.
Casting prices and stock . NER loco sets, price list
Scan of a casting in a set for a NE 4-4-2 V/LNER C6 class, NE 4-4-2 Z/LNER C7 class, LSWR 4-4-0 L11 unweighted (6 wheel tender) .
27 Mar 2013