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Chebyshev N=3 Polygon Wheel

Chebyshev Wheel From here, We can make N = 6 Hexagon wheel , easily. cf. another method. Chebyshev Linkage Wheel2 [Hexagon (= 6 edges)] ■ velocity check: 0.7 to 6.3=5.6, 5.6/8=0.7 --- 70% distance N=3 : 2/3 round  to , 5.6/8=70% ≒66% (=2/3) i.e. velocity of N=3 is almost the same N=2. ---- distance 4/ round, no merit. cf. Chebyshev Linkage Wheel (N=4) [different algorism] ---- distance 8/ round [= twice distance]
This fig. looks like a good. But, I think this fig. indicates bad. #1 black, #2 pink, #3 purple, 2 restrictions have done, between black-pink, black-purple i.e. purple-pink restriction is lack/ free/ no-restriction. So, next cycle, purple foot is ground base, ----- here, we supposed that clockwise rotation is forward. it will fail at its finish point, perhaps. Because, when purple 120° rotation end, pink foot should be just touched the ground. This is no guaranteed. ---- is not controlled. So, This is bad implementation sample. Please improve this. Denken Sie nach. -------- Above has yet logic miss. 2 restrictions is enough number of restrict. 3 restriction is odd. grounded foot/ leg is independent, and other 2 legs is dependent by one restriction, so, number of 2 restriction is enough number. Please find the best tuning result. From the line symmetry applying, about r2 = 1.27, t2 = 1.27, j3 = 1.06 is/ may be the feasible unified value(?). If above value is true, it's good. The coordinator 2 bars don't conflict the axis, this brings a easy implementation, good property. See check the one cycle movement in above Fig. Remark: This is N=3 solution, As a result, looks like a N=4 solution. (near the square rotation) ----- line symmetry brings about this.