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10 mm/ft scale
LMS bogie wheel.

3′ 3½″ diam., 10 oval spokes, rectangular inner rim, 4″ apparent tread.
Hub 10½″ face dia., ½″ out from the tyre.

Casting: 32.9 mm tread dia., 26.3 mm i/d., hub 0.4 mm out from the tyre.

Source: reduced works drgs. in O.S. Nock 'The Royal Scots'.

Casting prices and stock . LMS loco sets, price list

Scan of a casting LMS 4-6-0 Royal Scot - bogie only

Scan of casting T177

Cross section diagram of castings T177

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27 Mar 2013