The bicycle problem that nearly broke mathematics - Arend Schwab (3mE) User dullestfranchise, in the Delft University of Technology subreddit, 06 May 2019
TIL bicycle stability is actually a quite difficult mathematical problem and was fully explained no sooner than 2007 User Marha01, in the Today I Learned (TIL) subreddit, 05 May 2019
Jim Papadopoulos and his work on the mysterious physics of bicycling User TreeOfReckoning, in the bicycling subreddit, 12 Aug 2016
The bicycle problem that nearly broke mathematics User NomiDan82, in the TrueReddit subreddit, 25 Jul 2016