Diagrams Index . Home
7 mm/ft scale
B444, B445
Trinidad Government Railways, Kitson 4-4-0T later driving wheels.

4′ 3″ diam., 13 rectangular spokes, rectangular inner rim, apparent tread 3½″.
Hub 10½″ face dia., 1½″ out from the wheel. Pin between at 10". (Some dimensions are estimated from photos)

Casting: 29.8 tread dia., 25.6 i/d., hub 0.6 mm out from the tyre. Pin at 5.8mm.

Casting prices and stock . Trinidad loco sets, price list

Scan of castings in a set for Trinidad 4-4-0T, later.

Scan of casting B444 Scan of casting B445

Cross section diagram of casting B4443, 4, 5
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.


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10 July 2021