If you are somewhat interested in bikes, you are aware of the name Dave Weagle. His initials can be found on many frames from different brands. DW – a logo which stands for decades of tinkering about numbers. Numbers which describe somewhat the ride dynamics of a two wheeled vehicle: The bicycle. In this episode of the TESTPILOT Podcast, we dive head first into the rabbit hole of the science behind bikes. The complexity and flaws of models, which may or may not be able to describe what we feel on the trail.