Hi guys, tried searching the web but found little info addressing this specific question so thought I'd try here.
Comparing 'like-with-like' only (e.g. XT-with-XT, 11-speed etc.) which rear derailleur system (independent of anything up front) would shift faster, the latest cable offerings M8000/M9000 or the latest DI2 offerings M8050/M9050?
I propose two tests, broken into two sub-races for up and down shifting:
1) single-gear shifts (anywhere within the range of the cassette)
2) entire-cassette shift progressions (e.g. from biggest to smallest gear)
Timing would start from when the thumb touches the shifter paddle, and end when the chain has completely engaged with the destination gear.
My web research (mostly watching YouTube demo videos of shifting) leads me to suspect that DI2 wins race 1, but cable would win race 2. From the videos, it looks like the derailleur movement between single gears is freaking fast like instant, and I don't know if any cable system can match that. However, all videos I have watched of DI2 rear mechs progressing through large chunks of or entire cassettes seem to be rather sequential and they simply don't 'dump' gears quite like a big thumb-ful of lever on a cable system does.
Does anyone here have any suggestions or conclusions regarding the two 'races' above, based on some empirical evidence (and not just pure thought, speculation or please)? If so, I'd love to hear the results!
I didn't post the reasons WHY I'm asking this question as they're subjective and I don't feel they contribute to the science/discussion.
Cheers!
Comparing 'like-with-like' only (e.g. XT-with-XT, 11-speed etc.) which rear derailleur system (independent of anything up front) would shift faster, the latest cable offerings M8000/M9000 or the latest DI2 offerings M8050/M9050?
I propose two tests, broken into two sub-races for up and down shifting:
1) single-gear shifts (anywhere within the range of the cassette)
2) entire-cassette shift progressions (e.g. from biggest to smallest gear)
Timing would start from when the thumb touches the shifter paddle, and end when the chain has completely engaged with the destination gear.
My web research (mostly watching YouTube demo videos of shifting) leads me to suspect that DI2 wins race 1, but cable would win race 2. From the videos, it looks like the derailleur movement between single gears is freaking fast like instant, and I don't know if any cable system can match that. However, all videos I have watched of DI2 rear mechs progressing through large chunks of or entire cassettes seem to be rather sequential and they simply don't 'dump' gears quite like a big thumb-ful of lever on a cable system does.
Does anyone here have any suggestions or conclusions regarding the two 'races' above, based on some empirical evidence (and not just pure thought, speculation or please)? If so, I'd love to hear the results!
I didn't post the reasons WHY I'm asking this question as they're subjective and I don't feel they contribute to the science/discussion.
Cheers!
