Poor Semere Mengis was DQed during his TT for irregular equipment. Yes, during! The Eritrea DS didn’t know whether to tell Mengis or not. I think he ended up finishing the TT without knowing about the DQ.
Equipment regulations are needed in any sport, but I suspect it’s harder for some national teams to keep up and have the funds to maintain their bikes up to standard.
(Photo via CyclingTime)