burnthesheep wrote:
The efficiency losses on a 10t or 11t versus being in a 12 or 13 with a larger ring just makes me shudder. Those tiny cogs are not super efficient. Sure, couple watts, but remind me why I'd want to buy something NEW and supposedly better just to throw power in the trash can?
Well smaller rings and smaller cassette (for approximately the same range/ratios). So you might gain that couple of Watts back in aero. And weight, if you care. And while you'd only use the 10t in relatively rare conditions, the smaller frontal area and lower weight would be persistent across all conditions.
I'm a SRAM fanboi. Work with me, here.