This has always felt like a concern that is probably just not worth having for the vast majority of folks. With the test finding at best a 5 watt difference, I don't think I'm changing my prior on this any time soon.
> An efficiency test conducted by Velonews between 1x and 2x drivetrains found a ~5 watt difference riding in the 39-11 compared to the near-equivalent 53-15 gear
Yes but for 39-11, I would be curious to know if itβs the same for 53-30 instead of 39-optimal.
I'd certainly be interested in seeing the results. And I am not trying to preclude folks from testing and being worried. I still doubt I'll be changing my prior that "it doesn't matter" any time soon.
