Originally Posted by Funkychicken
actually, there is an alternative being developed - honda came up with a bike that uses cams instead of cogs, all enclosed within the front triangle of the bike.
/ignore me, useless FYI
Not avilable to the public in any way though.
There is also the gearbox being developed by Nicolai which is a heavy modification to the roholff...shows some promise for sure. but still $$$$$.