Originally Posted by BAL
Some would say that the Trek Pilot is a knock-off of the Specialized Roubaix. . . . .
Maybe true but they would be wrong about that. For the M-XL frame sizes, the geometry of a Pilot and e.g. a steel Lemond or Bianchi, for example, are the same pretty much: layed-back seat post angle, average sharp head tube angle, same head tube length, shortish wheelbase and chain stay lengths.
The Pilot has the sloping top tube but many of the Lemond and Bianchi models come that way now too. You can achieve the same body geometry on all three of these bikes, size for size.
The effective top tube length of the Pilot isn't even much shorter . . . the same as for a Bianchi and about 1.5c shorter than a Lemond road bike, which has the reputation of having a longish top tube.
Compared to these bikes, the Roubaix has a longer wheelbase and chainstay length and a lot longer head tube length--maybe the longest of any road bike, and the largest size isn't quite as large as an, e.g., 61c Lemond or a 63c Pilot or Bianchi.
At least, that's been my experience.
