Chainring Contact with frame - Please Help
I bought an old GT frame the other day and found an extra chainring lying around and I figure I'll put it on the frame but for some reason the bigger cog rubs agains the frame. I dont have the brand or the model of the chainring. It is just a regular 48 tooth 3 ring cog. So, Im wondering is there different sizes mtb chainrings and what would my options be.