Yes, I think you're right about the drawing. I'm wondering if a drawing ever existed? There are only 3 other compound 4nhp s types in existence (according to steam scenes) and they're all rollers and none have governors.
I'm quite surprised no one has a valve or complete assembly that they don't need and would sell?
Mr Brown and I have had a fair go at getting the sleeve out, and it's not for moving, and I don't really want to break the lugs off if I don't need to. I could make quite a good drawing with it in place.
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I'll get round to it one day.
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