Originally Posted by
Morelock
There may be more than a watt... But compared to what? The very best 1/8 chain you can make /buy vs the best dura ace chain... I'm sure there's a difference, but slick drivetrain are already nearly 97-8%efficient, so there aren't big watt jumps from great to the best. Imo of course
You might be right. But I think when VeloNews did their test there was a 5w? difference between the 105 and Dura Ace. Maybe I'm misremembering. Some people are now thinking that the current bushing type chain design inherently has more friction than bushingless road chains.