105 Di2 is here

[spoonrobot]

https://www.bikeradar.com/news/shimano-105-di2-r7150/





From a professional mechanic standpoint I am extremely excited about this. It's going to be a lot of sales and a ton of easy work. From a personal retro-grouch parts hoarder standpoint, I am less than enthused.

[KevinC]

I wonder what availability will be like.
Shopping for GRX di2 and see eta of 16+ weeks.
Too bad they don’t focus on delivering already released parts…

[Alistair]

My concern with this (and Rival AXS) is how quickly the bike is effectively disposable because one of the parts is unavailable.

My wife’s formerly 10 speed Ultegra Di2 was in the same boat - RD was NLA. But Al least I could upgrade to 11 speed. But will the frame-mount battery be available when this one stops holding charge? It’s on a Madone P1 so at least a reasonable frame to keep throwing parts at, but that’s maybe not the case for some likely 105 Di2 bikes.

[professerr]

No like: "The new Shimano 105 Di2 groupset is only available with disc brakes."

[deluz]

Does anybody know if this or Etap can be used as rear derailleur only?
I have been thinking I would like to use it on my tandem, but I cannot give up the triple chainrings.

[batman1425]

Originally Posted by deluz

Does anybody know if this or Etap can be used as rear derailleur only?
I have been thinking I would like to use it on my tandem, but I cannot give up the triple chainrings.

In theory yes. Both can be set up to shift a 1x electronic setup (which is essentially what you are doing). You'd need to have a 3rd shift lever though - either a bar end or down tube to run the mechanical FD for the triple.

However, the bigger problem will be chain and chainring compatibility. I don't think you will be able to get a 12s chain from either manuf. to play nice with an off the shelf triple crank.

[Xrslug]

Originally Posted by professerr

No like: "The new Shimano 105 Di2 groupset is only available with disc brakes."

That’s interesting. The product info at a retailer says it will have rim brake and disc brake options (albeit they only show a disc option, so who knows)

“7100 Series Features:
Semi-wireless electronic drivetrain
Rim brake or hydraulic disc brake options”

https://www.biketiresdirect.com/prod...sc-brake-lever

[mjf]

Originally Posted by Xrslug

That’s interesting. The product info at a retailer says it will have rim brake and disc brake options (albeit they only show a disc option, so who knows)

“7100 Series Features:
Semi-wireless electronic drivetrain
Rim brake or hydraulic disc brake options”

https://www.biketiresdirect.com/prod...sc-brake-lever

May have been given general product info at first without specifics being available. Safe to say that there's no rim brake after the product info dropped today.

[deluz]

Originally Posted by batman1425

In theory yes. Both can be set up to shift a 1x electronic setup (which is essentially what you are doing). You'd need to have a 3rd shift lever though - either a bar end or down tube to run the mechanical FD for the triple.

However, the bigger problem will be chain and chainring compatibility. I don't think you will be able to get a 12s chain from either manuf. to play nice with an off the shelf triple crank.

I think you are right. It won't be possible with a triple chainring.

[Nomadmax]

It's not for me, but the truth be told, my preferred brand Campagnolo, got better in the 80s because Shimano and others raised the bar.

[flying]

Its really a sign of the times/consumerism?.. that something as simple as shifting a derailleur seems to be going 100% electronic

The claim being what??? its easier? its faster?

In exchange we swap the utterly simple index shift & add batteries,chargers,servos,micro switches?

[AngryScientist]

So where does this leave the current line-up for road groups? Is there still a Tiagra or Sora below 105?

If this is the direction they are insisting on it would be nice to see them continue to produce a non tiered mechanical rim brake group of ultegra quality to keep people on the road who dont want such things. I'm sure it would continue to be a strong seller.

[flying]

Originally Posted by AngryScientist

So where does this leave the current line-up for road groups? Is there still a Tiagra or Sora below 105?

If this is the direction they are insisting on it would be nice to see them continue to produce a non tiered mechanical rim brake group of ultegra quality to keep people on the road who dont want such things. I'm sure it would continue to be a strong seller.

This is also what I wonder
Or is this going to be another herding move like the disc brakes?

[rice rocket]

Seems like they're just reacting to SRAM at this point.

That said, I will maintain that Hyperglide+ was the best innovation of this round of road groupsets, but that doesn't really sell groupsets (or bikes).

[sg8357]

Originally Posted by AngryScientist

[snip]
If this is the direction they are insisting on it would be nice to see them continue to produce a non tiered mechanical rim brake group of ultegra quality to keep people on the road who dont want such things. I'm sure it would continue to be a strong seller.

Campy Chorus is still 12s mechanical.


Honey, I've decided to save money updating the old bike,
I'm buying Campagnolo.