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7 mm/ft
GWR carrying wheel.

3′ 8″ diam., 10 oval spokes, rectangular inner rim. Tyre width 5¾″.
Hub 11″ face diam., ¾″ out from the tyre.

Source: works drawings for the 1400 class, lots 279, 287 and 288.

Casting: 25.7 mm tread diam., 20.9 mm i/d., hub 0.4 mm out from the tyre.

Casting prices and stock . GWR loco sets, price list

Scan of a casting in sets for GWR 4-6-2 Great Bear.

Scan of casting B149

Cross section diagram of casting B149

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27 Mar 2013