https://peertube.fr/videos/watch/45959392-6c84-47c7-9c8a-037a624d13f7 Test of an oval bicycle chainring. Design is based on an (old) O'Symetric patent reverse engineering. Manufacturing is done with a water jet cutter, cheaper than CNC milling. Precision is acceptable. Sat, 11 Apr 2026 05:36:49 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.fr https://peertube.fr/client/assets/images/icons/icon-1500x1500.png https://peertube.fr/videos/watch/45959392-6c84-47c7-9c8a-037a624d13f7 All rights reserved, unless otherwise specified in the terms specified at https://peertube.fr/about and potential licenses granted by each content's rightholder.