this spring in my rear derailer (campagnolo) is broken. it's the spring that generates the tension of the pulley-case. I have been looking for a replacement on the internet but with no luck. Is this spring acturally available as a single replacement part? what does it call exactly? or do I have to replace the whol rear derailer?
my bike is a more than 10 years old dancelli racing bike (2x7 speed), if I have to buy a new rear derailer, what model shall I buy than?