I recently returned to riding and have bought a second hand Giant Cypress. I have a problem which I haven't really found an answer to by using the search here. So my apologies if this has been dealt with before.
Do I have a chainring or chain problem?
Under stress, that is while setting off quickly or climbing a steep hill slowly in a low gear, I have what feels like the chain jumping in sudden jerks. I first thought that I had some bad (low) teeth on the chainring. Reading here on the forum I discovered that those pairs of low teeth were deliberate. I don't see any bad "hooking" of the chainring teeth (I'll get a photo if it will help). So might this be a chain stretching issue? Once under way, this jerking never happens. Also doesn't happen in higher gears, but then I don't set off or climb slowly in those gears. I ride the middle chainring almost all the time so this refers to that situation.
Maybe this is still too vague, but I'll appreciate your help. I'd like to fix this myself if possible rather than just take it into the local bike shop.