Yes and no in the way that you can get non-traditional frames (folding bikes, cargo bikes etc) that are one-size-fits-all. My e-cargo bike has a very slack seat angle so putting the saddle up also moves it back quite a long way so the effective frame size gets bigger overall. Means that one utility bike can fit pretty much everyone in the family with the simple movement of a seatpost.Chris Jeggo wrote: ↑2 Jun 2023, 12:28am So far, no-one has mentioned that seat tube length as measured from BB centre to seat tube top (including seat lug if necessary) is important in that it determines minimum saddle height, which is important with regard to leg geometry.
But yes, on "regular" bikes, the sheer range of build options and design means it's getting more difficult to directly compare one bike with another and that's before you get into the wild inconsistencies of metric and imperial within bike measurements!