I'm having a problem and since I'm new to bike mechanics, my only solutions is to ask for your help.
My last resort would be to take the bike to my LBS but they are a bit far. Here goes:
I recently got a brand new Trek 3700, it has like 100-150km. I'm started noticing a metallic noise while pedalling. I narrowd it down to the chain rubbing on the front derailer cage, cos the noise increases as I shift to the smallest rear sprocket. The shifting is very normal and I'm not having any problems besides that. I called and explained the problem to my mechanic and he said I should try loosening the barrel adjuster on the shifter. I still haven't tried it, thought I'd run it by you guys first
What do you advise?
Thank you so much.
Worth to note that last week, before the noise appeared, the chain derailed and got caught under the FD cage and a link got bent a little bit. I was far from home but was able to get my hands on a pair of pliers so I straightened it and rode back home. The next day I took the bike to my LBS and they checked it and tuned it, they said no need to change the chain cos it seemed straight and no bent link was found.