Hy Clythio, I agree, Velodrome Shop Straps listed as used by several world champions sounds very obsessively, indeed.
Finally, I could post pics and links. Here is Hoogland after Berlin 2020 Team Sprint Final (WR). I can count 60-teeth chainring. So here is 13-teeth sprocket (73.6 kmh in last 250m, some 132rpm).
