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From Plans / Re: Upshur's twin opposed cyl. engine
« Last post by GordonL on Today at 12:20:40 PM »Today I cut cylinder head fins and made up a couple of rocker arm support towers. Not terribly exciting, but it took up most of my day. There is something a little fishy about the bearing support tower in the drawing package from Upshur. Haven't quite figured out what it is yet, but there is something about the #5-40 threaded holes tapped in the rocker arm support towers and in the head.
See note #9 on the Upshur drawing. The rocker arm support is not drilled through. It is fastened with a threaded stem locktited in place.
See note #9 on the Upshur drawing. The rocker arm support is not drilled through. It is fastened with a threaded stem locktited in place.