single crown forks are used by mostly freeriders, the reason is that they provide upto 7inches of travel and at the same time dont restrict turning so you can perform tricks like tail whips etc.
the advantages of single crown are that your turning isnt restricted, and you dont have to have such a big amount of travel,
many dh riders use single crown forks like,BOS and Totems, these forks provide the ability of a dh fork but with less travel and tend to make the bike HA slightly steeper, its all personal prefferance.
most single crown forks with 7inches travel however are built for freeriders and are desinged for hard landings.
single crowns are however mostly used by xc riders as you can get small travel forks which is what xc riders use.
double clamps, are used majority by dh and for huckers( people who jsut jump off massive drops) reason been that they are stronger and that they tend to flex less, they also provide you with more travel than single crowns, which is why most dh riders use then., you can also adjust the height in which the forks sit so the head angle(HA) of the bike can be changed slightly and teh bar height can be changed. all these things help the rider make the bike his own and allows a biek to be changed for differnt tracks.
the fork provides a more dialled ability and is desinged to take littel and big bumps to make the ride as smooth and fast as possible.
dissadvantages would be that the bikes turning is restricted and you cant perform particular tricks. they also tend to cost more, how ever Totems cost more then most dual crowns on the market and totems are only single crowns.
as said above that doubles are heavier thats not true at all, double like boxxer forks and fox 40's are very light lighter than most single crown forks.
all up single crowns can be used for anything depending how much travel you decide to buy, the brand you buy and the design. there are alot of options and they cover from xc riding to dh,jumping etc.
double crowns are mainly focused on dh riding
you want other oppinions from people who ride goto www.rotorburn.com
its a website where bike riders go and talk on subjects.
hope this helps mate cheers
· 1 decade ago