A lot of people say that the LHT is an exact copy of the Atlantis geometry, but that doesn't appear to be so. For one thing, the LHT is 26" in the 54cm, and goes to 700C starting at 56cm, whereas the Atlantis is still 26" at 56cm - 700C starts at 58cm. Also, the other dimensions are not identical at all - to take two models with the same wheel size, for example, the 58cm: The top tube on the LHT is 580.1mm, Atlantis 585mm. The chainstay length on the LHT is the same across the board - 460mm. The Atlantis CS is 44cm for the 26" sizes, and 45.5cm on the 700C. BB drop on the LHT is 78cm, Atlantis 80cm. Close, but not exactly "carbon copy". Or am I just splitting hairs here? Maybe someone with more knowledge of frame geometry can educate me - do these differences make any real, well, difference?

Sources:
http://www.rivbike.com/images/static...etryCharts.pdf
http://www.surlybikes.com/longhaul.html

Neil