Stick with C&V stuff. If that was the type of suicide bike you had in mind, one could just as well take a Schwinn Varsity frame, make it a fixie, put a fork on it with V-brake mounts, set the V-brakes too tight, and wait for a bike thief to steal it (and subsequently throw himself over the bars when he realizes that he can't ride fixed, and jams the front brake).

The trick is to build a machine with hazardous-by-nature components that are not out of the ordinary for any C&V road machine.

-Kurt