Joined: Dec 2004
Posts: 12,548
Likes: 797
From: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, Catrike Speed
In the US, the right is generally for the rear derailleur and brake, the left side is for the front derailleur and brake. But there's no rule saying it has to be that way. In my early cycling days I ran the brakes both ways and they worked equally well.