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7 mm/ft
LBSC and NB tender wheels.

4′ 0″ diam., 12 oval spokes, rectangular inner rim, apparent tread 4″.
Hub 12″ face dia., ¾″ out from the tyre.

Casting: 28.0 mm tread dia., 23.3 i/d, hub 0.4 mm out from the tyre.

Casting prices and stock . NB loco sets, price list

Scans of a casting in a set for NB 4-4-0 K class.

Scan of casting B353

Cross section diagram of casting B353
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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6 Mar 2018