3′ 6″ diam., 10 oval spokes, distinctly ridged inner rim, apparent tread 4¼″.
Hub 19¼″ face dia. 1½″ out from the tyre.
Source: Johnson. Locomotives of the Great Central Railway, vol. 2, reduced works drg. in back of book courtesy of the Museum of Science and Industry, Manchester.
Casting: 33.34 mm tread dia., 26.0 mm i/d., hub 1.2 mm out from the tyre.
27 Mar 2013