Sram Red etap vs Shimano Di2....

[mile2424]

Which would you choose and why? Anyone know comparable weights for the group sets?

[rms13]

Dura Ace Di2 is 2034g and can be had for about $2100
Ultegra Di2 is 2407g and around $1100
eTap is 1775g and list price is about 2000 pound/$3000

http://www.cyclingweekly.co.uk/news/lat ... led-188162

[deek]

I added up all the weights from that article and got 1952g for a BB30 setup with no Blips. Not sure how they got 1775g.

MSRP in the US is also $2758 in the US, although it's usually pretty easy to find SRAM parts well under MSRP. For example, Art's Cyclery sells the non-electronic BB30 bits for $369 under MSRP ($940 vs. $1299). So if you're looking at ~$2400 if you have to pay MSRP for the eTap parts.

[flafonta]

I am waiting for eTap, although I know the risks with new innovations. But I know they will stand by their new product.
Pros:
- Lighter
- I like the new shifting paradigm
- I like the lack of wires and big battery to fit
- I like the interchangeable batteries.

[aaric]

eTap:
http://www.cyclingweekly.co.uk/news/lat ... led-188162
Shifters: 260g (pair)
RD: 239g (with battery)
FD: 187g (with battery)
686g total

Di2 9070:
http://www.bikerumor.com/2013/03/12/unb ... l-weights/
RD: 213.4g
FD: 106.5g
Shifters: 230g
internal battery: 56g http://www.bikerumor.com/2013/01/10/clo ... tery-more/
A junction: 10g http://www.competitivecyclist.com/shima ... nction-box
B junction 7g http://forums.mtbr.com/shimano/shimano- ... 47248.html
Wires x 5 62g http://forums.mtbr.com/shimano/shimano- ... 47248.html
684.9g


Essentially a wash weight wise for the shifting components. You can add other brakes, brake cables, cranks, chains, and cassettes as you see fit.

[aaric]

To answer your which would you choose question. Di2.

why:
1) You can get ultegra on the cheap if needed. I think its around 147g heavier for about half the price.
2) Wires will always be more reliable than wireless.
3) You're looking at a 2nd or 3rd generation shimano product vs a 1st gen Sram product. History says there will be teething issues on the 1st gen group, and shimano seems to be built sturdier than sram. That being said, I've personally seen the eTap running for over a year in close to final form, so I'll concede SRAM did a lot of testing on it.
4) Greater di2 parts availability - there's XTR, 6770, alfine, and 6870 bits that all can be used.

[andrewfelix]

Will be getting etap for clean lines and ease of installation. Frame choice is essentially limitless.

I don't buy into the argument that more can go wrong with wireless. I've had cables snap on me at various times. I also trust SRAM have learnt from the hydro s series clusterfck.


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[F45]

Not sure how they expect to target the Di2 market with prices like that.

[deek]

DA Di2 MSRP is over $4k although no one pays that. We'll see how much eTap will actually set you back.

I don't know how anyone can make their decision without actually trying it first.

[havana]

Shifting speed of eTap is a lot slower than Di2 (due to the fact it's wireless).

[prendrefeu]

Is that verified, or just theory?

Also, since eTap is not out yet, this debate is rather moot.

[havana]

It has been discussed extensively, also on this forum.. And it's completely logical: the derailleurs need to go into sleep mode in order to save the battery. Waking up costs time.

[prendrefeu]

And it's completely logical: the derailleurs need to go into sleep mode in order to save the battery. Waking up costs time.

Where are you reading this?

The derailleurs have built-in accelerometers that put the system to sleep when idle for 30 seconds, or wake the system upon sensing movement.

In other words, they are 'active' when you are riding/moving and battery saving when you are completely 100% stopped for more than 30 seconds. Even at a stop/intersection you are not fully stopped in motion: you move your bicycle just a bit, the accelerometer is activated.
Unlike Di2/EPS where the battery is 'active' and 'ready to shift' 24/7, even when the bike is leaned up against a wall. A person can go up to a Di2 rigged bicycle in a shop that has been placed on a stand and shift through the gears without turning the crank or moving the bike. With the eTap the person would have to physically move the bicycle (perhaps off the stand, for example) to wake up the derailleurs for shifting purposes. How is that bad?

Frankly that sounds logical and a feature that Di2/EPS should carry as well to save even the smallest bit of battery power while idle.

And yes, it is slower than Di2 yet reportedly shifts smoother.

And yes, it has not come out yet so this is still a moot discussion until people here, especially the OP, gets to test ride a bicycle with the eTap setup for comparison purposes.

[mariovalentim]

Let's compare theoretical differences

Cost: Shimano takes the upperhand, Ultegra Di2 is a lot cheaper than eTap, even Dura Ace is cheaper
Weight: eTap takes this one by a (very) little margin
Usability: I would say that eTap seems to be in front here, the way the shifting works and the shifting feedback in the shifters which is something people complain about the Di2
Frame compability: This is where I think that eTap is the huge winner and may be the main selling point. You can fit this groupset in ANY bike, old, new, vintage...it doesn't need to eletronic ready.

In the end, personaly, if I had a frame that would accept Di2 I wouldn't think twice, it's cheaper, battle proven and the difficulty to set up the groupset is higher but how many times someone re-wires cabble in a frame?
The thing is, the quantity of frames that accept Di2 is very small and this is the reason that eTap will be successfull.

[Tinea Pedis]

Shifting speed of eTap is a lot slower than Di2 (due to the fact it's wireless).

Shift speed has nothing to do with it being wireless and that theory has never been put forward on this forum (until now).