Originally Posted by
puchfinnland
good question, maybe because its a single speed, and the thinner teeth wear faster.
the little rear will wear out much faster.
I don't want to be a stickler on words but I true track bike is a fixed gear, not a single speed, therefore not only does the main ring have to be able to take the force of acceleration but also deceleration too. Structurally a thicker ring just makes better sense. Plus the chain tension on a track bike is way different than a bike with a derailleur which also causes more chainring wear.