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-   -   Ultegra Dii2 how do you set up a triple (https://www.bikeforums.net/road-cycling/885578-ultegra-dii2-how-do-you-set-up-triple.html)

Alan Edwards 04-22-13 08:59 PM

Ultegra Dii2 how do you set up a triple
 
Hay people, I'm usually on C&V but I have bikes from 73' to 2010'. This pertains to the new stuff, DII2 Ultegra. My local bike shop told me that you can't use a triple with Dii2. My bike shop really doesn't do more then setups and follow manufacture's guide lines. They once told me to throw away my DA 7700 pedals when I wanted to rebuild them. So I rebuilt my pedals, screw them. So is there a "Hack" for a triple, I know there is a way for sequential up/ down gearing with just one paddle ( The computer knows that the next highest gear is up on the front and down on the rear). I know there is a simple two button pad that you can mount on the bar and not use the paddles. I'm just lacking in the info on a triple. Thanks, I don't want to get in any ones way, I'm just slow.

David Broon 04-22-13 11:06 PM

A) it's just di2. No ii. We're not on the second version yet, and that would be DiII.

B) You can do anything with enough creativity, but as far as I am aware, you can't use a triple or do sequential shifting with it. (yet)

Welcome to the 41!

Also, find a new LBS.

hamster 04-22-13 11:50 PM

I'm sure that there are more than a few people who'd be interested in hacking Di2 to work with a triple, but there are several problems.

1) you'd need to take apart the front derailleur and replace the cage with one for a triple FD. I suppose you could buy a sacrificial 6703 FD, take the cage and toss the rest.
2) you'd need some special equipment to reprogram the system. It retails for $200 in the U.S.
3) (the real problem) you need special hacked firmware that supports a triple. To my knowledge, it does not exist because no one figured out how to do it. It is not easy to hack firmware for some obscure electronic device without any source code or documentation.

DinoShepherd 04-23-13 05:16 AM

Would a mountain double get you where you want to go?

You can have 26..38 up front. Or 40..28.

When combined with an 11..28 that should give you decent gearing.

Just thinking out loud.

RT 04-23-13 05:46 AM

Is it possible to Di2 the back end and cable the front end, or does that make way too much sense? Electronic shifting makes so little sense in my Fredly world as it is.

LowCel 04-23-13 06:05 AM


Originally Posted by RT (Post 15542243)
Is it possible to Di2 the back end and cable the front end, or does that make way too much sense? Electronic shifting makes so little sense in my Fredly world as it is.

Pretty sure the brains of the operation are in the front derailleur.

RT 04-23-13 06:21 AM


Originally Posted by LowCel (Post 15542294)
Pretty sure the brains of the operation are in the front derailleur.

Yeah, guess would need a whole new left lever then. Oh well.

rangerdavid 04-23-13 08:02 AM

I would think a newer version would be Di2.2 :thumb:

mrardo 04-23-13 08:14 AM

The real advantage to DI2 is the perfect front derailleur. Getting a triple working reliably is hard, more black art than skill. If a DI2 triple was easy Shimano probably would have done it. It would bring me back to a triple if Shimano could get it right.

CrankAndYank 04-23-13 09:04 AM

WADR, if you need a triple, you don't deserve Di2...

kv501 04-23-13 09:05 AM


Originally Posted by RT (Post 15542243)
Is it possible to Di2 the back end and cable the front end, or does that make way too much sense? Electronic shifting makes so little sense in my Fredly world as it is.

Me too until I rode it.

Like buttah.

Psimet2001 04-23-13 09:09 AM

How to set up Di2 triple - step by step:
1. Open computer and go to craigslist.
2. Post "triple crank for sale"
3. Use money from sale to buy a double crank.


Sure...not helpful but I sure feel better.

Alan Edwards 04-23-13 09:09 AM

My thought was that if the FD self adjusts then if it was set up for a triple you would not need to change the cage. The RD might need a longer cage to take up chain wrap, but that would be an easy fix. I'm going to send a letter to Shimano. DinoShepard +1 I did not know you could get a double down to 26-38. David Broon Yes you can with sequential shifting, It is for sale and you add a button to your handle bar...$150. Where is the brain, I thought it was in the brake levers. Different parts have different parts of the brain??? Just seems like a no brainer for Shimano to get it to work for a triple.

Bostic 04-23-13 11:16 AM

I'd buy a triple DI2 if they offered it. I use the 52t ring on my triple to drop riders on compacts on long descents.

hamster 04-23-13 12:17 PM


Originally Posted by Alan Edwards (Post 15542955)
My thought was that if the FD self adjusts then if it was set up for a triple you would not need to change the cage.

I was originally thinking that, if you don't change the cage, the chain would rub against the tail end of the cage when in the granny ring. But I just took a close look at my Ui2 FD and the cage seems to be long enough (there's space between the chain and the tail end even in 34/12 gear). 50/39/30 should work without physical changes. Maybe even 52/39/30.

Electronic rear / cable front is crazy. Mostly defeats the idea of having electronic shifting in the first place. Most of the value of electronic is in smooth reliable front shifting and front auto-trim. Besides, it simply wouldn't work, the system won't function if it does not see all components.

Alan Edwards 04-23-13 01:16 PM

Thanks Hamster Good to know that my thinking is correct. Now more complaining to Shimano. It just looks like a programming job, and they did it the first time so why no for triple. Thank you all for the info, better here then the Shimano website.

Ritterview 04-23-13 02:06 PM

On the tandem forum, we'd love to have an electronic shifting triple. Thus this post, which I copy/paste.

[HR][/HR]


Originally Posted by waynesulak (Post 15379209)
Give us an electronic triple then we can compare manual to electronic. The thought of an electronic triple that does everything as advertised would be great. No long cable run issues, great front shifting, what's not to like?

The thing is, we will all grow old before Shimano or Campagnolo makes a triple shifting FD. If you talk to anyone in the bicycle industry about tandems and triples, they recoil from you as does Dracula from a cross.

I think it is doable, however, to modify existing systems to shift a triple. One thing to note is that the 11-speed chains are narrower, and thus the chainrings can be more closely spaced. This requires less range of throw of the FD. There might, even now, be sufficient throw now on Di2 or EPS to shift an 11-speed FD on a more closely spaced triple.

How it could be done for Campagnolo (and presumably Di2 as well) is depicted on this graphic. (1)The new Athena 3X FD donates its cage. (2) If the throw on the EPS FD isn't sufficiently wide, then a longer arm (as depicted) is fabricated using 3-D printing (see video below) to obtain wider throw. (3) The EPS brains are hacked to get it to make 3x shifts. All of these things have been done individually. K-Edge has done more than this to produce a mountain Di2 group.

http://farm9.staticflickr.com/8520/8...5d21c0c7_h.jpg

3-D Printing bicycle parts:

hamster 04-23-13 06:28 PM


. K-Edge has done more than this to produce a mountain Di2 group.
They did not. They made physical modifications to RD to allow a 11-36 cassette and they put a standard Dura Ace Di2 FD on a 40/28 mountain crankset.

Ritterview 04-23-13 09:23 PM


Originally Posted by hamster (Post 15545239)
They did not. They made physical modifications to RD to allow a 11-36 cassette and they put a standard Dura Ace Di2 FD on a 40/28 mountain crankset.

Yeah, but what about the shifter? Not stock that is.

http://brimages.bikeboardmedia.netdn...91-600x400.jpg

ThermionicScott 04-23-13 09:52 PM


Originally Posted by mrardo (Post 15542694)
Getting a triple working reliably is hard, more black art than skill.

Pfft.


If a DI2 triple was easy Shimano probably would have done it. It would bring me back to a triple if Shimano could get it right.
They could easily do it. They don't want to.

hamster 04-23-13 11:28 PM


Originally Posted by Ritterview (Post 15545927)
Yeah, but what about the shifter? Not stock that is.

This guy http://nyvelocity.com/content/equipm...ra-di2-tt-hack built TT Ui2 shifters by taking apart road bike shifters, keeping the circuitry, and routing the button wires to switches mounted on aerobars. (There are two buttons and three wires - up, down, and ground - in each shifter.) It's purely a mechanical mod.

The shifter in your pic is functionally the same. It only has one pair of switches because the bike has 1x10 drivetrain so there's no front shifting to be done. This does not involve any firmware hacking.

marqueemoon 04-23-13 11:45 PM

Not sure what the tooth differential Di2 is rated for, but the Sugino OX801D and OX601 are 94/110 so you can have a small ring down to 30t on a double with a reasonable q factor, outboard bearing bb, and no chainline wonkiness. If you just want low gearing in the triple neighborhood with a double and a short cage rd that's how I'd do it.

http://farm7.staticflickr.com/6094/6...1a64a68b_z.jpg

JakiChan 04-23-13 11:53 PM

Personally, I'd love a stock electronic RD that can do a wide range cassette. On my Roubaix right now I've got an 11-34 with an XTR RD. If there was a way to do the same thing with a stock electronic RD (not the K-Edge hacked RD) I'd do it in a heartbeat.

wgscott 07-14-15 08:34 AM

Sorry for the necro-post, but this might be possible now.

Unless I am reading this wrong, it looks like Lennard Zinn says that if you purchase XTR (mountain bike) front and rear derailleurs, you can use these with Di2 road shifters.



You can run a full XTR Di2 drivetrain with your Di2 road levers (you could use any Di2 ST or SW Di2 switch, like climbing, sprint, or TT switches with it). That would be analogous to mixing 10-speed ST-6770 (Ultegra Di2 shifters) with 11-speed RD/FD, or 11-speed ST-6870 (Ultegra Di2) or ST-9070 (Dura-Ace Di2) with 10-speed FD/RD-6770 (original Ultegra Di2). Both of these road combinations do work.

Tech FAQ: Mixing Shimano road, MTB Di2 derailleurs - VeloNews.com

rpenmanparker 07-14-15 08:49 AM


Originally Posted by wgscott (Post 17978171)
Sorry for the necro-post, but this might be possible now.

Unless I am reading this wrong, it looks like Lennard Zinn says that if you purchase XTR (mountain bike) front and rear derailleurs, you can use these with Di2 road shifters.





Tech FAQ: Mixing Shimano road, MTB Di2 derailleurs - VeloNews.com

But as a triple?


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