Originally Posted by
noglider
I leave my bike unlocked occasionally. I "sabotage" it by putting it in the big chainring and the big sprocket, then push the shift levers forward, so the bike has to shift both derailleurs while taking off. I also undo both quick release skewers. If the front wheel falls off, that will stop the thief quickly. The rear wheel will move forward in the dropouts and rub hard on the chainstays, making the bike hard to pedal. I also undo the brake cables so stopping is a challenge.
Is carrying a lock against your religion?