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10th Jan 2013, 14:53

#24 (permalink)

Shaggy Sheep Driver

Join Date: Oct 1999

Location: UK

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Quote:

Spey fan diameter is 32 inches.

32"? That's not a fan, that's a compressor stage!

What was the max boiler pressure of a Robert Stephenson 'Planet' locomotive, and why does the modern replica run twice that pressure?

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