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In operation the model follows prototype practice; Peter's Q1 has Stephenson's valve gear, driving piston valves.
Similarly, the model relies on 2 injectors as per prototype, and does not have an axle pump for water feed.
However, although a good representation, the steam reverser is a dummy, the wayshaft actually moved by a rod running beneath the boiler cladding.
The smokebox is well proportioned, the door held closed by 8 spaced dog catches.
Built for hard work, his Q1 appears to be spot-on, and is certainly robust and reliable, performing many passenger hauling duties.
The Number C20 was chosen by Peter as he completed his Q1 in the Millenium year, and he has had it in regular use since then.
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