Originally Posted by madnomad
...I looked at the triangular metal piece which extends from the larger metal bar and it had been cut near the back, obviously this had been done some time prior and I didn't notice it, the "assailant" was just waiting for someone to lock his bike to that particular part so he could take it...
--- AHA! THANKS for the tip. Sorry you lost your bike, but your warning may HELP someone else.
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"The bicycle is the perfect transducer to match man's metabolic energy to the impedance of locomotion. Equipped with this tool, man outstrips the efficiency of not only all machines but all other animals as well." Ivan Illich ('Energy and Equity')1974