Originally Posted by
Proofide
I'm a bit tired, so I hope I didn't miss anything above, but have you actually measured the chain to verify that it's the correct length? .....Sherlock Holmes used to say that one should never confuse the unlikely with the impossible.
Sherlock Holmes didn't know much about bike chains. Chain length isn't and cannot be a factor. If a chain is to be able to transfer power it has to engage positively with slipping even if the other end is totally slack. If chain tension on the slack side could somehow affect engagement or slippage then there would be tension in the lower loop and the net torque delivered to the rear wheel would be reduced.
So paraphrasing Mt. Holmes, one shouldn't confuse the impossible with the merely unlikely.