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#85255
Mumbles
Participant

    An alligator clip with some of the teeth ground out and a thin rod attached to it makes a good amplifying tool to detect when the butterfly is just starting to open. To get an accurate reading, it gets clipped on the butterfly shaft at the opposite end of the linkage to allow for play in the linkage.

    On the three horse motors, the bottom of the cam can be bent out a bit to help get the synchronisation spot on.