ive had trouble finding a seatclamp that could tighten the post on my wifes streetbeat, this has gone on a while & i know others that had the same trouble, i was told to get a hinged as this would solve it but no luck, yesterday i was searching through my old toolbox from when i was a kid & found an old suntour seatclamp that had been badly sanded down to take off the anodized colour, i tried this & what do you know? it works
into the garage for a can of spray, hey presto..looks like new..