Diagrams Index . Home
7 mm/ft scale
B340, 341
LTSR driving wheels.

6′ 1″ diam., 17 rectangular spokes, rectangular inner rim, 4″ apparent tread.
Hub 16½″ face dia., 2¾″ out from the tyre. Pin in line at 13″

Source: Engineering Magazine, 14 Jan. 1881.

Casting: 42.6 mm tread dia., 37.8 mm i/d., hub 1.6 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 B340   Scan of casting B341

Cross section diagram of castings B340, B341
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