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.
2′ 9½″ diam., 8 rectangular spokes, rectangular inner rim, apparent tread 3½″.
Hub 9½″ face dia., 1½″ out from the wheel. (Some dimensions are estimated from photos)
Casting: 19.5 tread dia., 15.5 i/d., hub 0.6 mm out from the tyre.
Casting prices and stock . Trinidad loco sets, price list
Scan of a casting in a set for Trinidad 4-4-0T, early, Trinidad 4-4-0T, later.
10 July 2021