Anyone ever try taking up the slack due to chain stretch by switching between two chainrings one tooth apart?
For example, you bolt a 39T chainring on one side of the crank spider and a 40T on the other. The difference in circumference is 1/2" so when the chain stretches 1/2" you move from the 39T to the 40T to take up the slack. Then when it stretches again you remove a link and move back to the 39T (-1"+1/2"). And repeat until it's time to replace the chain.
Or maybe they should be 2 teeth apart since the chain only wraps around half the circumference?
Does it work?