Diagrams Index . Home
7 mm/ft scale
B18
GWR 4-6-0 King driving wheel.

6′ 6″ diam., 22 oval spokes, rectangular rim, apparent tread 4″.
Hub 19″ face dia., 3″ out from the tyre, pin between at 14″.

Casting: 36.2 mm tread dia., i/d 41.9 mm, hub 1.75 mm out from the tyre, pin at 8.17 mm.

Casting prices and stock . GWR loco sets, price list

Scan of a casting in a set for GWR 4-6-0 King

Scan of casting B18

Cross section diagram of casting B18
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