Just reading our own definition of Chainstay Length in the terminology index. It is written currently as the distance between the centre of the chainring and the centre of the rear cog.
This is simple enough to follow for a bike with vertical dropouts at the rear, but what about frames with horizontal dropouts or track ends, the geometry of the frame is fixed, surely, even if the wheel can be moved F/A. So how do we define it in that case, where the cog can be moved?
From the diagrams I'm seeing online, the chainstay length by this definition is the same as the rear centre. Is this true, and is it affected by any of the above?
What I want to achieve is to understand and update the Terminology Index entry.