S shaped down tube (MTB) Are there any advantages of S shaped down tubes over the traditional ones on MTB? For example: what do you think of this design? Jamis Exile Comp 2013 !Jamis Exile Comp

The S shape allows for:

* stronger head tube and bottom bracket welds without the need for gussetting. You'll find this on more trail focused bikes (such as AM, FR and DH).

* wheel clearance for long travel forks

* wheel clearance for the front wheel (ie. 29er's)

* Still allows for room for a water bottle within the front triangle