At home someplace I have *audited* approximate capacity figures for the various rides. By "audited" I mean I stood there with a stopwatch and timed dispatch intervals.
Off the top of my head, though, I know I have measured...
Blue Streak: 1,440 pph (before computer)
Corkscrew: 1,440 pph
Disaster Transport: 1,200 pph
Magnum: 1,728 pph
Raptor: 1,600 pph
Iron Dragon: 1,600 pph
Gemini: 3,400 pph (6 trains, no seat belts)
Millennium Force: 1,336 pph
I'll see if I can find better measurements...
--Dave Althoff, Jr.