xassantex saidcomes down to how technical your DH course is. You have a point. Kinda the point I was hitting at. I really wanna do downhill soon, but not sure if I wanna do something that's tough enough to actually require a full DH bike (though it would be fun, but my body wouldn't handle the inevitable wipeout).
try it and you'll see.
but DH bikes haven't gone dual, with 3 in tires and 9" shocks for nothing. ;p
.. well you have to go full armor.. to me it would also come down to how my wallet would endure it.. ( it wouldn't )
this said i know guys who raced DH for years and were on a tight budget.
as for bikes, for example,the Mont Ste-Anne world cup DH course is simply impossible on a XC rig. You'd find bike parts and maybe rider parts all over the course.