Lever to power wheelchair modelo 3d

Post-printing:  Materials: 3d printed parts, 4 screws, 3 washers, 1 traction spring, 1 bearing.Assemble the spring to the rachet.Assemble the rachet to the “Bar support” part. Put a washer in between.Put the bearing on the “Anular” part.Assemble the “Bar support” with the “Anular” part. Put 2 washers in between,and two nuts at the end of the screw (it prevent them from getting out with the spin)