onyerbike531
Retro Guru
Hello forum people
I have an old racer bike with a Shimano EX300 groupset, well half of it at least, it looks like someone has swapped the original chainrings and chain for something that isn't compatible; there seems to be a load of slack in the chain which isn't taking to the teeth of the chainring properly and it is struggling to stay in gear despite me adjusting the rear derailleur, nothing seems to be working. This particular bike originally came fitted with biopace chainrings but they've been swapped out for something more conventional and not up to the job. I wanted to know what type of chain would be compatible with the Shimano Exage 300EX groupset with a 7 speed cassette. Is there any modern double chainrings that would also work with this setup if I wanted to change the chainrings.
Thank you
I have an old racer bike with a Shimano EX300 groupset, well half of it at least, it looks like someone has swapped the original chainrings and chain for something that isn't compatible; there seems to be a load of slack in the chain which isn't taking to the teeth of the chainring properly and it is struggling to stay in gear despite me adjusting the rear derailleur, nothing seems to be working. This particular bike originally came fitted with biopace chainrings but they've been swapped out for something more conventional and not up to the job. I wanted to know what type of chain would be compatible with the Shimano Exage 300EX groupset with a 7 speed cassette. Is there any modern double chainrings that would also work with this setup if I wanted to change the chainrings.
Thank you