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Author Topic: Videos of slow running M90 Hit & Miss Engines  (Read 309 times)

Adirondack Jack

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Re: Videos of slow running M90 Hit & Miss Engines
« on: October 28, 2020, 06:49:44 pm »
Reduced compression by shaving the piston is one guess. Another is carefully going through the Governor mechanism and polishing everything to operate smoothly. The last guess is timing very carefully retarded so it fairly jumps to life just a skinny hair AFTER TDC. It’d be nice for display, but under any kind of load might not be happy.