I bought my GT Cyclone in November 1991.  I've put 10s of thousands of miles on it.  I still love it.  Years later I bought a GT Avalanche, it's a good bike, but doesn't ride like the Cyclone.  I'm putting a group together to ride the Camino in two years from now.  We're going to take a training ride on the Great Allegheny Passage next spring, and I'm concerned that my beloved Cyclone won't be up for the Camino.  Question: when do you hang up the bike for good?  Is it when the cranks fall out of the barrel?  How many miles can I get?  I love this bike...