The latest in my build projects for this year is this manual treadle lathe, designed again in 3D CAD for lazer cutting from stock 10.00mm steel plate. The bed section will be made from English Elm with two steel wear strips embedded into the top outer edges.
The flywheel/s are 700.00mm dia 10.00mm steel plates, and a triple fabrication using the two main rings to clamp against an inner rim made from steel strip, 16 bolts support the rim and hold everything together nice and solid.
The throw of the crank gives a 120.00mm travelling recip each cycle of the foot pedal, which has a wooden capping over the entire length of the main pedal frame.
Pictured below is the main section plan complete.
As I build the top section, which will incorporate a four speed quick change gearing can lock mechanism, she will also have planetary gearing similar to the rose engines of yesteryear, I will also add a geared travelling tool post as well as tool post for doing long tapers.
The benefits of the composite flywheel is, you can add extra layers for more reciprical momentumn for those heavier work pieces, the lathe shown here is 2 meters between centres, but can be made in almost any length. The full length foot pedal also enables two people to work at the lathe, providing extra foot power on the bigger projects.