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7 mm/ft scale
B472
NSWGR 4-4-2T class Z13 radial truck wheels.

3′ 10½″ diam., 12 rectangular spokes, apparent tread 3″, tyre width 5½″.
Hub 11″ face dia., 1″ out from the tyre.

Casting: 26.8 tread dia., 23.3 i/d., hub 0.6 mm out from the tyre.

Casting prices and stock . Australian loco sets, price list

Scan of a casting in a set for a NSWGR 4-4-0 Z12.

Scan of casting B472

Cross section diagram of casting B472
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.


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27 Mar 2013