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Your wireless drivetrain might not be as safe or secure as you think - Canadian Cycling Magazine
(cyclingmagazine.ca)
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Maybe I'm missing something, but I have never understood the appeal of electronic shifting.
I spoke with a guy who has the Shimano Di2. One of the main benefits is that you don't have to index the derailleur... it automatically does it and always puts you in gear without any BS.
He also mentioned something about automatic shifting, which sounds interesting.
When integrated with a bike computer, it can do some other cool tricks. The shifters can also control a bike computer, which can be convenient.
At the end of the day, all of my manual shifters (grip shift, brake lever, and trigger...) all work perfectly fine and can't be hacked. LOL
When you make cycling too complex, it takes the fun out of it, IMO.
Less maintenance for sure. The biggest thing for me is I get to use all 24 gears without hearing the chain rub on the front mech.
I wouldn't say it's a big enough upgrade to replace a groupset on an existing bike. However when I do buy my next bike I'll aim to get DI2.