Lendrum Single to Double Treadle Conversion Kit. You send us your Entire Lower assembly, Including pedal, Maiden Upright, up to and including the Wheel. We do not need the head. We Make a matching pedal, machine a ultra precise pivot pin, and pivot arm. A couple screws, footman connector, some love and you've got a double treadle Lendrum.
Pictured is a Wheel we've upgraded.