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Look at the picture in the link. The dropped pedal pivots throughout the pedal stroke. Both crank arms are the same length, but on the long leg side is a pivoting extension the size of your LLD, say 1", and the pedal is built into the bottom of that. Its lets the length of the crank arm continually adjust throughout the pedal stroked. Tom is more of a phone guy than email guy so try ringing him up.