(Caveat lector: This won’t be of any use, or any interest, to the vast majority of readers here. I’m putting it up because I couldn’t get any reliable information on the Internet on this subject, which led to me spending a remarkable about of money to get the facts. These facts are now available here for free, minus the value of one Amazon referral link below.)
The picture above is my nine-year-old son winning his third race in a row against ten-year-olds. He’s smaller and lighter than his competition, so I’ve tried to find a few places to save weight. Because he enjoys riding his bike at the skatepark, however, I can’t go full-on BMX-Dad “weight weenie” on his bike.
One easy place to save weight is the pedal. Other than rims and tires, there is nowhere on a bicycle where a single gram makes as much difference as it does on the pedal. Not only do they rotate around a fairly large circle, making the total amount of acceleration required nontrivial on its own, they are also sold in pairs, so every bit of weight saved is effectively doubled. It’s a mistake to put a child on an adult’s pedal; the Deity Bladerunner, which is about the lightest BMX/MTB platform pedal sold for full-sized riders, weights a robust 185 grams each. How much is a proper child’s racing pedal? Half of that.