Originally Posted by
scott967
I've never liked the "righty-tighty" concept for pedals. It's OK if you use a pedal wrench, but if the pedals use a hex from the back it can get confusing, in particular if you have to remove the crank to get enough leverage and remove the pedal with the crank in a vice.
You're right, the righty-tighty/lefty-tighty mnemonic suffers from its dependency on perspective.
However, the wrench forwards/on vs backwards/off suffers from a dependence on an upright bike. Half the time I take pedals off I turn the bike upside down, which reverses that mnemonic (and makes it not memorable). For people with easy,convenient access to workstands all the time (i.e. shop mechanics), this is not an issue.