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Author Topic: Is This a Stuart Engine?  (Read 1347 times)

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Re: Is This a Stuart Engine?
« on: November 02, 2022, 02:17:25 pm »
It is Stuart. Stuart had a line of several engine kits for beginners, called Progress engines. They still sell one of the two oscillating cylinder kits and "STP" is cast under the base casting on this too.