Originally Posted by silentwolf
Quick silly question that comes to mind from this pic:
Why do most Dakar bike have the low header pipe silencer? Was it engine maintenance, easy to empty if waterlogged, better straight pipe sound? Some combo of all?
I know it's not a necessity, and this is somewhere in the back of my head but can't remember...
As far as I understand, it's because most Dakar/Rally bikes are carrying massive quantities of fuel, usually in a fuel tank that otherwise occupies the space that a normal header pipe would occupy. Also, most rally bikes are also carrying rear mounted fuel tanks which also interfere with the normal muffler location. Hence the lower pipe and more vertically oriented muffler. some designs are more extreme than others, all depends on the configuration and size of said fuel tanks.
In the case of the bike in the picture above, the muffler is mounted on the bottom of a stainless steel fuel tank...