The thing that I can't understand is that the vast majority of people who have negative things to say about Di2 (or any new technology for that matter) have never owned it or tried it for any appreciable amount of time, yet they know all of the things that they won't like about it. This is a good example... you have to wait for 20 minutes before riding a bike with Di2. The charging issue is another funny one. I've had Di2 since last September, have 9,300 kms on it and have charged it 2 times. You can check the charge in seconds, it gives plenty of warning well before you need to recharge, and even if it bonks it diverts all available power to the rear derailleur allowing you to get home with reasonable functionality.
Some hilarious responses, this forum is entertainment!
Anyway, I've never ridden an electronic groupset but I love the idea of just tapping a button to shift, Playstation like.
I appreciate gears, but how they are shifted is not a big concern to me.
I am waiting for Di2 to trickle down to lower level groupsets, it just seems too pricey to me...for now.
I want a high tech bike with an integrated display module, USB ports, and a solar cell integrated into the frame so there is no need for cable charging.
I would even prefer a belt drive if an electronically shifted IGH could be made light.
I have not ridden the Nuvinci hub, but suspect I would find the lack of feeling or hearing a gear change boring.
Frankly I think road bikes should be more advanced than they are today, but it seems innovation is slower in this segment of the bike market compared to off-road and non competitive bikes.
Still, there will always be simple fully mechanical bikes to ride, and no one says you have to sell or upgrade your current bike.
I want the industry to keep moving forward but will still keep my singlespeed steel grocery bike to cruise around on
I wonder how long it will be until someone invents ABS braking for bicycles?
I've ridden my Di2 bike less than 10x and I am sold - I've tried hilly, fast club rides and 1 race so far in it.
I'd like to get Cav's take on Di2 vs Red...but we'll never get that of course
The 10sp Ultegra version should go down in price soon. I got mine 1475 and was able to pick whatever config I wanted (the seller gave me a DA chain but since I've only used KMCs and 9sp Shimano before I don't know on how much difference does it really make).
I like feeling that click and the resistance in the lever.
That feels too disconnected to me. I prefer downtube friction. I took a 30 year break and when I came back that mechanical indexed stuff just felt weird.
I am a bit surprised that electronic shifting took as long as it did to hit the mass market. But now that the technology is out there, economies of scale should make it available on box store bikes in another five years.
Telemachus has, indeed, sneezed.
Huh, I stand corrected. I would have thought that the pulsing would be a serious risk, but they've evidently side-stepped that.
Telemachus has, indeed, sneezed.
I don't have a power meter, so I don't know what my average power output is on my bike, but
says amateur riders can produce 210 watts for an hour. As an electrical engineer, my educated guess is that the Di2 probably averages 10 to 100 milliwatts of power draw. At 100 mW (and I think that's a high guess), that's 0.05% of your power that you're saving by not shifting mechanically.
I'm pretty sure that's imperceptible.
Last edited by RFEngineer; 07-02-13 at 10:31 PM.
It still is human powered. In case you missed it, electronic shifters do not add a single watt of power to the drivetrain.The reality is that the bicycle took a VERY long time to evolve to be the simple, light HUMAN powered and operated machine it is today.
Do you really not understand how electronic shifting works?Adding electro-servo motors to replace muscle power is the antithesis to what a bicycle is all about in the first place.
Di2 does not "replace muscle power." It improves shifting, and that's pretty much it. You might as well say that integrating the brake lever and the shift lever is a vile debasement of cycling, because it makes it easier to shift.
So says the guy who is outraged that it exists in the first place.IMO, electronic shifting is just a FAD, get it?
Mechanical shifting faces just as much "obsolescence" as electronic shifting.Because if the fails don't make you quit it, planned obsolescence of the systems will.
In a few years, you'll have the same problems replacing Di2 components as you will 9-speed components.
Uh, in case you missed it, the pros have had lots of "fails" with mechanical shifting over the years -- the most notorious in recent memory being Andy Schleck dropping a chain during the 2010 Tour de France.Saw a quite a few fails in the pro ranks over the past few years. No one wants to talk about them though.