Well, I got lil H142 sitting driving nothing. Been trying to come up with an in frame FD without spending$. Came up with idea after idea, then this hit. I needed a wide roller to align with engine w/o a Js. So far this seems good. The freewheel slips on snug to the headtube. Give it a couple tack welds. Figure a way of mounting with hinge. Could be wrong, but I'm thinking I can lift the roller just enough to clear tire, even though its chain driven. Put a stop so I don't over lift..?? Like 'five alive' said, "need input"...
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