Just added a larger sprocket (+3 teeth in rear) and will likely need a longer chain. I just put a new chain on a few months ago (less than 500 miles on it) and hate to buy a new one. I still have the links I removed when I installed it (Dura-Ace 9sp chain).
I know the standard recommendation is to never add new links to an old chain. But I'm skeptical of absolutes. I understand there is a risk of increased tooth wear on the sprockets and rings. I'm planning to upgrade to 10sp in the next year so premature cassette wear is not a concern, but chain ring wear is (just moved from a triple to a new compact). According to my Park chain wear gauge (CC-3) the old chain is OK.
I'm planning to add the links and see if I notice any poor performance or visual gaps before buying a new chain. Is this a really bad idea?
Thanks in advance.