Sorry, if this has been answered elsewhere BUT .. want to ask a couple of questions re my chain ( Shim Ultegra ). Firstly, this is a new bike which I`ve ridden since start of April ( less than 7 weeks ). Have done about 600km. I would like to know on ave what sort of distance should I be able to put on the chain before I can easily change it alone ( ie not having to change out sprockets or chainrings ). Secondly does a bog standard chain link remover do for opening this chain OR is there a necessity for a special one. On that question my ( very old ) tool seems to fit OK .. just not sure it will do the job. I ask the first question cos I`m sure any lightweight chain takes a LOT of abuse and I wish to maintain my costly bike well. Ultegra chains set you back about £35 .. I`d hate to think I would not get a reasonable service life out of it. Ta very much for any informed input.