I didn't do the RipCord at CP, but I've done Kennywood's SkyCoaster. That has to be one of the most exciting things I've ever done.
I do agree... LOVE the sensation when they drop the floor out. I remember thinking for sure that I was gonna nail my head off the floor.
And when the cord is actually pulled... CrystalKat is right... NOTHING happens! For what seems like an eternity, you just sit there. (In actuality, it's probably like 1 second, give or take half a second.) Then you go flying STRAIGHT down. I wanted to say something on the way down, but it wouldn't come out! Great experience.
Enjoy your flight.
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WHOO!