Variant from Hexagon wheel.

[b]■ Imagine, more extension from Hexagon figure ![/b][br]Consider, #1, 2, 3 , 4, 5, 6 parts were (partial) broken even #.[br]what will happen?[br]#1, 3, 5 are fine/ good, --- but, this triangle wheel is feasible. [br]Do extend the width of edge 1.5 multiple, is more comfortable, maybe.[br]This is a long/ big stride walking.[br]Please imagine.[br]cost performance of this apparatus is high. maybe.[br][br][b]■　The near function by another method ---- foot position/ stride is different.[/b][br]cf. [url=https://www.geogebra.org/m/VNGQ5Z5U][b] Chebyshev N = 3 Polygon Wheel[/b][/url] (GeoGebra).[br]fewer bars. ----- i.e. We can reduce the number of orange coordinator bars. [b]6 to 2. [br]----- but, very slow walking. small stride.[/b]