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′ 2″ diam., 18 oval spokes, inner rim steeply humped, apparent tread 4¾″,
Hub 19½″ face dia., middle boss 12½″dia., middle boss is ¼″ out from the tyre. Pin between at 13″
Source: Green Arrow measured direct at York.
Casting: 43.2 mm tread dia., 37.4 mm i/d., hub middle boss 0.15 mm out from the tyre, pin at 7.6 mm.
Casting prices and stock . LNER loco sets, price list
Scans of castings in sets for LNER Thompson A2/1, 6 wheel tender . Thompson A2/1, 8 wheel tender . P2 . V2
27 Mar 2013