There are still two cams and they still have to be timed, however the range of acceptable timing is larger (in theory). My own (limited) experience is that you still have to pay critical attention to timing if you want your bow to shoot it's very best groups. In fact, with my initial hybrid cam bow, I had to spend quite a bit of time messing with the timing before I could get it to shoot a bullet hole in paper. I then monkeyed with it even further to get my best vertical grouping while group tuning. I found it a real pain in the rear-end to continually have to press the bow, put a 1/2 twist in one cable, remove one from the other cable, and so on. Shoots real nice once timed and tuned, but don't think for a second that they require "no timing"