4′ 0″ diam., 12 rectangular spokes, low hump inner rim, apparent tread 4½″.
Hub 12″ face dia., 2⅛″ out from the tyre.
Source: preserved loco measured direct at Bressingham in 1994.
Casting: 53.4 mm tread diam., 43.7 mm i/d., hub 2.4 mm out from the tyre.
Scan of castings in a set for a: GER T26/LNER E4 with prototype photos.
27 Mar 2013