Being one link off, it shouldn't matter if you move the one link on the cam sprocket or on the crank sprocket. The link of the chain is still the same length, be it on the crank or cam sprocket. Yes the circumference is doubled on the cam sprocket vs. the crank,but the distance one link moves is the same... The angler distance is doubled on the crank vs. the cam...So you can move the CAM sprocket one link and get the same results as moving the crank sprocket one link.
