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Reviews 1 - 5 (12 Reviews Total)
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Submitted by
shavon
a Recreational RiderDate Reviewed: February 26, 2012
Strengths: can shift on hoods or drops
considerable admiration when the cycling cognosenti notice...Weaknesses: it ain't cheapBottom Line: Other reviewers have described the flawless consistent shifting, how shifts never ever fail, there's no dropping the chain, long battery life, etc.,& I second those assessments. I love the Di2 on 'sharp' rollers , where the grade instantly changes from up to down or vice versa--ie, no flattening out at the bottom or top of the roller. Then you appreciate the front shifting. It's instant, it's crisp.
Another reason I went electronic is because, w/ age, there is arthritis in my finger joints.... all the shifting on long rides caused alot of aching (especially the front shifting lever push). Now it's tap, tap, tap. Light. Easy.
Favorite Ride: anywhere with friends
Similar Products Used: ultegra; mix of SRAM Red/Campy
Bike Setup: Seven Elium ; Rolf Prima Dauphine wheelset; Di2
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Submitted by
Russell
a Road RacerDate Reviewed: July 18, 2011
Strengths: Quick - Smooth - Long Battery Life - Shifts from Two locationsWeaknesses: NoneBottom Line: Had the Di2 installed on 2011 Cervelo P3 time trial bike. This is the sweetest setup I have every used. Unlike regular aero bar shifters you can shift from the bull horns. This is very useful during training. Works extremely well during racing.
Favorite Ride: Any Time Trial
Price Paid:
$2600.00
Purchased At: Big Bang Bikes
Bike Setup: 2011 Cervelo P3 - Zipp 303/808/Discs - Rotor Time Trial Crank Set 53/42
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Submitted by
stcamp
a TriathleteDate Reviewed: January 1, 2011
Strengths: Precision, dependability, battery lifeWeaknesses: Wiring harness (would like to see a wireless version) and slight weight increaseBottom Line: Recommended by head mechanic and fellow rider. Similiar comments regarding shifting, accuracy, and reliability kept coming up. Have used Di2 for almost 4 months and am very pleased, especially when standing up on a sprint and gearing up or down and never having to worry about a gear change. Not sure if its as fast as mechanical, yet it is more quiet. I would say shifting up from inside chain ring is easier. I also clean my bike every week, yet wanted to see how the shifts executed if I did not clean the chain & derailleurs for one month (it was tough looking at a dirty drive train), yet the shifting was as precise on a gritty drive train then as the day I bought the system.
The price paid was for shifters, both derailleurs, housing, wires, battery. No crank or brakes....and of course, install/labor.
Favorite Ride: Anything with hills
Price Paid:
$2700.00
Purchased At: LBS
Similar Products Used: Only mechanical with SRAM Red & Shimano DA
Bike Setup: Lynskey Helix
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Submitted by
malikgp
a Road RacerDate Reviewed: September 2, 2010
Strengths: Instantaneous Shifts
Queued Shifts
Cross-chained Shifts
Small-to-Big Ring Shifts while sprinting
Only 1hr charge-time required
1000+ miles on a single charge
Works in Rain, Heat, Clouds, Fog, etc
Weaknesses: NoneBottom Line: I was highly skeptical of the Shimano 7970 Di2 Gruppo. How could it be so much better that it would command that much of a premium over the mechanical 7900?
$3500 retail for the upgrade kit? $4800 retail for the default? Really? But I was curious after seeing some reviews. That said, I desperately needed to demo the Di2 for myself before even thinking of plunking down that kind of change.
I finally found a store that had the Di2 on the high end 2010 Specialized Tarmac Di2 and took it for a test spin.
After only a few blocks of shifting, I was 100% sold. Electronic shifting is, simply put, the present and the future.
It's far ahead of the brake/shift lever system as the brake/shift lever system was ahead of index shifting.
There is simply no comparison, but unfortunately there is no way for you to truly get a sense of what this gruppo can do until you actually try it out for yourself.
Thankfully I was able to find a storefront on eBay and buy the full 7970 gruppo for $2900 for a savings of $1800 compared to retail.
Considering you can purchase the mechanical 7900 system for $1600, the premium for the full 7970 gruppo is more than worth it.
If you have the money, buy it. Hands down.
Favorite Ride: Fast, Faster, Fastest, Hilly, and Vicious :D
Price Paid:
$2900.00
Purchased At: eBay
Similar Products Used: Shimano Deore
Shimano Ultegra SL 6600-G 10-Speed Double
Bike Setup: Custom Serotta HSG GS Frame
Shimano 7970 Groupset
Zipp 404 Carbon Clincher Wheelset
Chris King Headset
Ritchey WCS Carbon Matrix Stem 3K
Ritchey Super Logic Evolution Bar
Ritchey WCS Carbon Seatpost
Selle Italia SLR Gel Flow
Maxxis Cormet Tires
Deda Bar Tape
Shimano 7810 SPD-SL pedals
2x Arundel Mandible Carbon Fiber Cage
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Submitted by
Flash Bazbo
a Road RacerDate Reviewed: June 25, 2010
Strengths: Slick, reliable shifting under all conditions.
Easy adjustments.
Shifting from a variety of hand positions.Weaknesses: Cost -- unless you shop well.Bottom Line: Di2 is amazing. You've heard about the superior shifting -- under all conditions, under conditions where cable-actuated shifters have a hard time -- and they're all true. Trouble-free. Easy to adjust. Reliable. Thousands of miles on a battery charge. I haven't found any area in which Di2 isn't as good as a cable-actuated setup -- and it is clearly superior in many respects. You can shift Di2 without using any leverage at all which means shifting from a huge variety of hand positions. If you can touch the button, you can shift -- even with your little finger. I purchased the "shift kit" which includes everything but the brakes, bottom bracket, and crankset. If you shop well, Di2 can be price competitive with the higher-end Campy groups.
Favorite Ride: Endurance Road Ride
Price Paid:
$1500.00
Purchased At: Pro Bike Kit
Similar Products Used: Shimano 6700, 7800; SRAM Rival, Force
Bike Setup: Specialized S-Works SL-2 Roubaix
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