Diagrams Index . Home
1:32 scale
P61
GN leading and tender wheels.

4′ 0″ diam. (originally 3′ 11″) , 12 rectangular spokes, low slightly humped inner rim.
Tyre width originally 5″ measured in 1995 as 5½″.
Hub: 12″ face dia., ¾″ out from the tyre.

Sources: measurements direct from preserved loco No. 1 at NRM, York, June 1995.
The Stirling Singles, Leech and Body, David and Charles (1965), page 53. (Tyre width).
Great Northern Locomotive History, RCTS., vol. 2 page 164. (Wheel diameters).

Casting: 38.1 mm tread dia., 31.4 mm i/d., hub 0.6 mm out from the tyre.
Tyre width for exact scale modellers: 4.0 mm

Casting prices and stock . GN loco sets, price list

Scan of a casting in a set for a GN 4-2-2

Scan of casting P61

Cross section diagram of casting P61


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27 Mar 2013