1st trip from Modbury to McLaren Vale via Veloway stalled by malfunctioning Deraillieur 2nd trip on a new bike made it though I did have 3 punctures. 3rd trip made it without bike problems though the headwind on the return ride took the shine off the day. 4th trip today. Spinning along nicely down Nth East Road and despite some quite thick fog I'm feeling good. Walkerville a loud bang and the rea…