N=4 2R-Virtual Wheel (Vers.-C)
Simple implementation viersion.
cf1. N=4 2R-Virtual Wheel (1st version.)
cf2. N=4 2R-Virtual Wheel (Vers.-B) (bariant -B: exact line symmetry)
In above fig.,
C1V (pink) // B'D' (blue)
is it true?
If so, Green 3 bars can be replaced by 1 bar (= parallelizing from V to B'D' . ex. new bar VV').
Tip:
C1V (pink) // B'D' (blue) is looks like true,
but
C1V (pink) is not // B'C' (green) is looks like true. ----- odd. --- WHY?
Very odd. my drawing mistake??.
This expection was failure. Purple line --- is real // line from B'.
But we can use this as approximation solution, if you like.
Perhaps, This foot doesn't dig a ground at landing time.
c. Review: 0.41 = tan(45°/2) =tan(π/8) , where π = pi /pai/ =3.14.....