I just impulse bought a set of tri-dangles. Just wondering if it works with standard canti brakes or are they Avid specific. Also where would I get the hanger cable as they do not seem to come with them, or do I just "make" them?
You can use them with any canti brake so no need to worry on that score.
By hanger cable do you mean the straddle wire (the one that connects both arms)? If that's what you're after then you should be able to get them in most bike shops. If not then you can always make one with a standard mountain bike brake cable.
Use them on my Klein, used 2 brakecables, one from lever till TriDangle and one piece wich was left over from old cable for canti till canti. Works perfect.