Diagrams Index . Home
7 mm/ft scale
B 327
GWR 4-6-0 Hall, early locos, driving wheel

6′ 0″ diam., 20 oval spokes, rectangular inner rim, 4″ apparent tread.
Hub 17″ face dia., 1¼″ out from the tyre, pin in line with the spokes at 15″.

See photo. of No. 4901 in Russell, A pictorial record of Great Western Engines, vol. 2, p. 161.

Castings: 42 mm tread diam., 37.0 i/d., hub centre 0.7 mm out from the tyre. Pin at 8.75 mm.

Casting prices and stock . GWR loco sets, price list

Scan of a casting in a set for a GWR 4-6-0 Hall (early).

Scan of casting B327

Cross section diagram for casting B327
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