Why? Well.......because it is "better"! (Of course) That's what Shimano, the bike companies, and the bike shops want you to believe. And in several ways it is better. But nothing comes without compromises. There are a few glaring ones that you don't hear much about when these bikes with Di2 get discussed.
A few things jumped out at me when I built the bike. In no particular order....
- There is a corded charger you will need to keep the battery charged. Oh.......but the battery lasts a 1000 shifts.... Okay, but ya know what? In the fine print, it says you should not run the battery completely dead, because it may shorten battery life. So, you will charge that expensive battery more often than you think. Know what that means? Your bicycle just became another "device". You know......like a phone, a mp3 player, a digital camera, (shall I go on?). Yeah....so keep track of that corded charger, and always bicycle in areas with 110V outlets in the U.S.A. (Shimano sells separate chargers and cords for other electrical outlet/power standards)
- The derailleurs are butt ugly. Yes.......I said it! The servo motors needed to move the derailleurs look like gray, plasticized tumors. They are uninspired from an artistic viewpoint, and look very out of place. Some of that is due to "newness", I will grant that, but they do not look like an integrated part of the derailleurs and thus, stick out like something alien to the rest of the machine.
- The Ultegra Di2 has about a 30% shorter battery life than Dura Ace Di2, even though the batteries are identical. The wiring scheme on Ultegra Di2 consumes more energy per shift. (It's in the fine print with the system, and verified by a Shimano tech meeting I attended a year ago.)
- The levers are really cool. I love the shape of the hoods. The buttons are decent. It was my favorite part of the system by far.
- It shifts with precision, but faster? I will not say that. You can't screw up a shift though, unless you press the wrong button/lever.
- The rear derailleur, in particular, concerns me. The servo motor lengthens the body of the derailleur a lot, which presents a longer lever arm for impacts to bend/shear drop out hangars. I predict that more derailleur hangars will die due to this longer derailleur body design.
- Everything about the system is very expensive.
Disc brakes arguments were heated then. "It'll never be anything other than a down hill thing", or "it will weaken wheels to much", or again, "wheels can't take those forces from disc brakes without being made so heavy I won't ride them."
Similar roadie specific grievances are being put forth even now. Of course, none of it will matter in five years. By then it will be an accepted part of the scene, and road bikes without hydraulic brakes or mechanical disc brakes will be seen as quaint, retro machines, not unlike how 650B rando bikes are seen today.
My question: Will there be a "Roadie Retro-Grouch Societe'"? I want to buy the t-shirt if that happens. I have the mtb version mothballed in my collection to go with that.
But seriously- If the whole brifter-with-hydro-brakes thing can be solved, I would definitely be interested from a drop bar mtb/gravel grinder viewpoint. And ya know what? I am 90% sure we'll see something this year yet for that. Of course, you'll have to upgrade to 11 speeds out back! That's okay though, since I'll just ditch the front derailleur thing-a-ma-bob altogether when that comes down the pipeline.
Speaking of gravel grinders..... My next event is CIRREM which happens next month near the end. Wow.....by the looks of the way things are going, I may use a Mukluk at that event too! Either way, it is a hilly, metric century length deal that I know I can do. I look forward to getting down there and seeing the Des Moines folk I have met. Great folks!
And gravel grinders continue to come out of the woodwork! i have been getting hammered by promoters wanting their rides up on Gravel Grinder News of late. The calendar is filling out nicely with quite a few first time additions.
And finally.....I have started the cue sheets for T.I.v8. So far I have up to Checkpoint #1 done, and by the end of the weekend I hope to have most of that job bagged. Then after that I will hand off some drafts to a couple of folks as we drive the course to double check things in the field. I will have also double checked everything myself at home first by that time as well.
Hopefully that part of Trans Iowa will be dialed before the event starts and not prove to be a stumbling block to any of the riders.
Have a great weekend and get outside and enjoy life if you can!