Pedal input
Cable pull at 550 mm bell-crank arm
Design: rocker pivot O4
At this position
- Coupler angle θ₃
- Rocker angle θ₄
- Transmission angle μ
- Tip C (x, y)
- Tip travel per input degree
A fourbar path generator synthesized from Figure 2 of the ME339 brief: crank O2A, coupler A–B–C, rocker O4B. Move the pedal input to flip a page, and move O4 (sliders, or drag it on the drawing) to re-run the three-position synthesis live.
Lengths are measured off Figure 2 at about 1 mm per pixel of the brief's figure (open book ≈ 300 mm wide). Scale every length by the same factor for your book.