Just wanted to know. How do you go about rushing reapers? I've been experimenting on 9 and 10 but almost always ends up with an enemy protoss having stalkers or terran marauders.
Generally, a fast Reaper rush is most effective against Protoss. Against Terran, they may have 2-3 Marines before your reaper gets there, which will make it ineffective. Against Zerg, you will often have to deal with a Queen or multiple Zerglings on creep. Protoss, though, requires a Cybernetics Core along with a Stalker to be able to combat it.
Here is the Turbo Reaper Build most commonly use against a Protoss opponent.
Another option against Zerg is to use a build that LzGamer has been using lately, which is to build 3 Rax quickly and pump reapers from all of them. This applies huge pressure because the Zerg opponent can't take on large groups of Reapers without speed upgraded Roaches. I don't have an exact build for this one, but there is some discussion by Zerg players about how to combat it here.
Hope this helps some.
The thing about reapers, is that they're fairly predictable (in terms of a good opponent anticipating it if they know you're terran).
Against any decent player, they'll ready a Stalker, Marauder, or Queen to handle any reaper harass. That means you have a relatively small window for the rush to be effective.
If your enemy has stalkers / marauders by the time your reapers reach their base, you've taken too long. What's your general build order? Check your replays -- what's the game time when your first reaper comes out? What maps are you trying to do this on?