Train detail: valve gear and mechanical lubricator

BR Standard Class 5, 73050 City of Peterborough: detail of Walschaerts valve gear and mechanical lubricator. Thanks to ~greenbank for the info.

Nene Valley Railway, uk. I did not realise until I was taking these shots just how awesome steam trains are. I intend to go back and get some better shots soon. Therefore, any specific train related requests you have I am open to. No promises, but I'll do my best.

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