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Reply to "Steam Locomotive Timing"

Gentlemen, please lets not confuse the squareness of the valve settings with the quartering of the main crankpins, at EXACTLY 90 degrees. The "off-quartering" is what produces that "hitch-in-the-gittyup"exhaust sound. Proper setting of the valves is what produces that "extra sharp" exhaust crack, with absolutely no "mushiness".  With the out of quartering it is also pretty difficult to properly set the valves.

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