pdlpsher1 wrote: ↑
Sat Feb 24, 2018 6:20 pm
I read today that Tom Dumoulin lost his TT race due to a Di2 failure? During the recon ride the RD went into the crash mode. The team mechanic replaced the RD however there wasn't enough time to truly test it. During the race the RD conked out again and Dumoulin had to change bikes. Later it the team mechanic found the likely causely cause to be the shifters. I've never seen a shifter fail. I wonder what exactly happened. Too bad the problem happened during a key race. I really like my Di2 but I would like to find out what lead to the breakdowns....
http://www.cyclingweekly.com/news/lates ... cal-370522
Interesting. I wonder what kind of failure would trigger crash mode like that. I'd always sort of assumed that pro bikes would have that feature disabled somehow.
At the same time, hard to see this as an argument against electronic groupsets. Mechanical gears are plenty capable of going wrong as well.
For me, I was ideologically opposed to Di2 for a long time. I insisted that the beauty of a bicycle was that it was mechanical, and that the elegantly designed system relied solely only on tension and clever engineering. That there was something conceptually wrong about having to charge a bike. Then I tried a bike with Di2. I bought an upgrade kit the next week. Perfect, instant shifts every time, no dropped chains, 0 cable stretch, 0 maintenance, auto-trimming, shifting the big ring under power, etc. Battery life is so good that it's almost impossible to run out. At the time I made the switch there was a weight penalty. Now there's a weight penalty for staying mechanical. I don't think it really makes me any faster. Maybe only in the absolute most marginal sense. Quicker shifts up to the big ring and shifting under power you could argue are infintessimal performance upgrades. And the DA 9150 groupset being 46g lighter than DA 9100 might be worth a couple of seconds on a 10km climb.
But if I'm putting in thousands of miles per year in the saddle, it's a quality of life upgrade that's hard to overstate. I'll personally never go back. For me, mechanical dura ace is to Di2 today what 105 was to Dura Ace 5-10 years ago.