Originally Posted by
stlutz
I mean that if you go the sites I linked above and enter in all of the frameset measurements from the manufacturer, they should yield stack & reach figures that match what the mfr. publishes in those same geo charts. (Note that there is always a little wiggle room due to factors like headset cups--I'm talking about being off by 2cm, not 2mm).
You do it for a Specialized, Cannondale etc. (i.e. companies with the resources to QA their websites), the raw data always results in the published stack/reach numbers. For smaller companies, I've found that they seem to be more prone to make errors when the data gets moved from their design drawings to their websites.
Ah, I was thinking that Stack required fork length, which is a measurement not usually included in geometry charts. I’m wrong about that? I mean, since Stack and Reach don’t account for Seattube Angle, how do you “reverse-engineer” fork length from the geo charts?