Chain wont stay on Large Chainring
I recently purchased a 10 speed Road bike with a full Shimano 105 groupset. I was out riding it today and about half way through my ride I tried to switch to my large chainring and was unable to. The chain would move over to the large chainring, but as soon as I let go of the shifter and continued peddaling it moved itself back to the small chainring again. Also when I shifted to the gear with the most tension on the small chainring my bike bike a sort of clicking and clanking sound . I am unfamiliar with proper terms as this is my first Road Bike. Any advice would be greatly appreciated.