Diagrams Index . Home
7 mm/ft scale
LTSR plain wheels.

3′ 1″ diam., 9 rectangular spokes, rectangular inner rim, 4″ apparent tread.
Hub 12″ face dia., ½″ out from the tyre.

Source: Engineering Magazine, 14 Jan. 1881.

Casting: 21.6 mm tread dia., 16.9 mm i/d., hub 0.3 mm out from the tyre.

Casting prices and stock . LTSR loco sets, price list

Scan of the castings in sets for a LTSR 4-4-2T No 1 class.

Scan of casting B339

Cross section diagram of casting B339
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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4 Feb 2015