Ok, most unreliable bike? Kawasaki 100 ('71?) consistently carboned the spark plug which meant pulling the plugs where ever I was, replacing, or cleaning 'em. Got some nice burns on my fingers from that @#$%^ bike too.
My Triumph Daytona 500 ('69) was a close second. Cool looking, hard starter, and liked to shed bits the longer the ride. I remember a 300 mile night ride to Seattle (in the rain, of course) and arriving with bandannas crammed into the valve cover holes (the caps rattled off into the gloom somewhere east of the Cascade Mtns, so I stuffed the bandannas in). Then the front engine mounts shook off too. The next morning I noticed engine was lying in the frame. Oh the good ol days...
