Chebyshev Linkage Wheel2

This apparatus is a Hexagon (= 6 edges) wheel made by Chebyshev Linkage (approximate straight-line mechanism). In figure, the solid-line bars are components of this apparatus. The dashed-lines are explanatory lines. Aqua-colored big bullet ◯ E is a axis of this wheel.
■ Please change the ratio of bars for more economic resource.