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′ 9″ diam., 21 oval spokes, reinforced near the pin, vee inner rim, apparent tread 4″.
Hub 20½″ face dia., pin between at 13″, central boss is 1½″ out from the tyre.
Source: Kohlhapur at Loughborough in 1995, measured direct.
Casting: 47.3 mm tread dia., 42.5 mm i/d, hub 1.1 mm out from the tyre, pin at 7.6 mm.
Casting prices and stock . LMS loco sets, price list
Scan of a casting in a set for a LMS 4-6-0 Jubilee
27 Mar 2013