Originally Posted by
philbob57
Won't the pedals get tighter as they're used? Isn't that one of the reasons that they both tighten by turning the spindles toward the front of the bike?
If you observe the pedal itself, it actually spins BACKWARDS (or rearwards) as you pedal forward. Counterclockwise on the drive side and clockwise on the non-drive side. Thus, if your pedal bearing freezes stuck, the pedal will actually loosen itself as you pedal forward (a good thing, rather than breaking your ankle). To my understanding, this is why the pedal threads are as they are.