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Thread: Di2 specific frames...who does it properly?

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    Default Di2 specific frames...who does it properly?

    Looking for ideas on who does wire routing on electronic specific frames properly. I've seen a bunch and I believe Pinarello is the best I've come across. Really is just head tube area that I'm looking for. All other points seem to be pretty similar. Anyone else got some recommendations for me to look at?

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    Default Re: Di2 specific frames...who does it properly?

    Giant is on my short list of production frames and they seem to do both, with adapters. I'm not yet sold on electronic shifting for many reasons but I think their frames are available as an either/or proposition and get very high reviews. Worthy of a couple minutes of checking their website at least. They are an industry leader.
    La Cheeserie!

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    Default Re: Di2 specific frames...who does it properly?

    pinarello is beautiful, especially their old electronic only frames

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    Default Re: Di2 specific frames...who does it properly?

    Slightly at tangent, but I've never understood why they need so many wires.

    I cannot see why they didn't use a multiplexed data bus and paired supply lines: it would simplify the wiring enormously. Since both companies have gone down the same route, there's obviouly something I'm missing.

    Of course I've missed it, so I don't know what it is.

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    Default Re: Di2 specific frames...who does it properly?

    Quote Originally Posted by Mark Kelly View Post
    I cannot see why they didn't use a multiplexed data bus and paired supply lines: it would simplify the wiring enormously.
    They do, at least the E-tube Di2 uses CANbus

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    Default Re: Di2 specific frames...who does it properly?

    Couple of the Di2 Fireflys posted on FNL look mighty swell.

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    Default Re: Di2 specific frames...who does it properly?

    Built a Firefly a couple weeks ago. Didn't like where the cable along the down tube entered. Maybe it was the size of the bike paired w/ the 130 stem?

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    Default Re: Di2 specific frames...who does it properly?

    i'd like to see more completely internal routing like Rob English has done. I would think Shimano could design a PRO bar/stem or two to allow for this

    then the rest is up to the frame manufacturers/builders i guess

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    Default Re: Di2 specific frames...who does it properly?

    I don't understand why so many companies put the down tube wire entry point on the drive side where it's so damn obvious? I know Parlee do it amongst others. Surely one of the benefits of the electronics is the ability to hide and de-clutter - even purely for clean lines visually (I'm not one for believing there's any genuinely useful aero benefit).

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    Default Re: Di2 specific frames...who does it properly?

    Quote Originally Posted by RichTheRoadie View Post
    I don't understand why so many companies put the down tube wire entry point on the drive side where it's so damn obvious? I know Parlee do it amongst others. Surely one of the benefits of the electronics is the ability to hide and de-clutter - even purely for clean lines visually (I'm not one for believing there's any genuinely useful aero benefit).
    The drive side makes for a clean run along the front brake housing and up.

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    Default Re: Di2 specific frames...who does it properly?

    Quote Originally Posted by SignatureJustin View Post
    The drive side makes for a clean run along the front brake housing and up.
    ...which, to me at least, is far from 'clean' in itself.

    But then I'm a pedantic f?&ker.

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    Default Re: Di2 specific frames...who does it properly?

    On the dogma 2 it enters directly below the rear brake hole, and is almost invisible

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    Default Re: Di2 specific frames...who does it properly?

    On a quasi-coque frame it would probably be best to enter the front triangle pretty close to the front brake cable stop. There's plenty of room to route the wire through the headtube and clear the fork. A single dab of hot glue would keep the cable out of the way. Is anybody doing it that way?

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    Default Re: Di2 specific frames...who does it properly?

    Trek and Cannondale do this really well where there is one hole for the rear brake housing and di2 wire
    05_cdale_syanpse_women_headtube.jpg

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    Default Re: Di2 specific frames...who does it properly?

    Quote Originally Posted by abbeyQ View Post
    the front brake cable stop
    Wait, what?

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    Default Re: Di2 specific frames...who does it properly?

    Quote Originally Posted by Bob Ross View Post
    Wait, what?
    Forward stop for the rear brake, front brake doesn't have any cable stops.

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    Default Re: Di2 specific frames...who does it properly?

    Quote Originally Posted by abbeyQ View Post
    On a quasi-coque frame it would probably be best to enter the front triangle pretty close to the front brake cable stop. There's plenty of room to route the wire through the headtube and clear the fork. A single dab of hot glue would keep the cable out of the way. Is anybody doing it that way?
    Hello everyone,

    Sorry to revive this thread so late, but someone brought it to my attention tonight.

    I wanted to share my experience when I was trying to find a discreet way to run the wires on the DI2 frame I was having built by Dave Anderson last year.

    At first I thought I'd run it through the stem and through the steer tube. If I put the hole in the front of the steer tube, it would be in compression (which is better than having it on the back on the steer tube). However, I just don't think it's wise to put any holes in such an important tube. Certainly that was Dave's perspective. He builds beautiful frames, but never at the cost of structural integrity.

    The next best thing was to take advantage of holes in the frame that already existed, namely the hole for the internal routing of the rear brake cable.

    I thought that I would run the DI2 wire along the rear brake cable, into and along the top tube and then down the seat tube. I came up with several ways of getting around the seat post - all of them complicated and none of them very good.

    For some reason, I had been thinking about it as a cable, like your typical rear derailleur cable. And then I realized, hey - it's a wire, I can bend it with no impact to its functionality.

    With that realization, the solution became clear: run the DI2 wire along the rear brake cable to the point it enters the top tube, enter the top tube and bend the wire forward, run the the wire along the top tube towards the head tube, down the head tube to the down tube to the bottom bracket.

    Dave came up with a great fabrication solution for reinforcing the DI2 hole that made for a very clean fit and look.

    The end result is the cleanest DI2 routing I've seen. The bike was on display at the 2013 NAHBS. Shimano showed a lot of interest, setting up lights and shooting loads of photos and video. The DI2 routing got lots of attention as well from several builders.

    Unfortunately, I'm not able to post photos so I've included some links to Dave's photos on Flickr below.

    Take a look. AbbeyQ, I think that you'll find that someone has done it that way and has done a fine job indeed.

    If you're looking for a builder that's a pleasure to work with and that delivers a beautiful, precise product, then I can't recommend Dave enough.

    Enjoy.

    Greyfox

    Here is a photo of the cable routing. At the show, the two cables were held by tape. In my build, I've used some glue which is cleaner still.

    IMG_5516 | Flickr - Photo Sharing!

    Here is a detail shot of the two cables entering the top tube:

    IMG_5548 | Flickr - Photo Sharing!

    Here it is again from the top:

    IMG_5572 | Flickr - Photo Sharing!

    And one last one from the rear which really shows how clean it is:

    IMG_5562 | Flickr - Photo Sharing!

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    Default Re: Di2 specific frames...who does it properly?

    That's very nice^^^^, exactly how it should be done.

    I'm surprised that the Vsalon crowd, who is normally extremely aesthetically opinionated, overlooks a wire flopping out of a bung tacked onto the down tube.

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    Default Re: Di2 specific frames...who does it properly?

    The more I look at Dave Anderson beautiful lugged stainless bikes, the more I want one.
    --
    T h o m a s

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    Default Re: Di2 specific frames...who does it properly?

    Perhaps the real question here is what we really want in a coordinated install. I have a recently completed frame with the e-tube going into the down tube about where the old down-tube bosses would have been, so it has a 3-4 inch jump from where it parts with the rear brake cable housing. And at least my frame is small. On a big frame it would look stupid. With 44 mm head tubes there's plenty of room with most tapered forks to make an accommodation for the e-tube through the head tube -- preferably just running it right into the head tube.

    When running a brake cable housing and an e-tube together, I prefer using a piece of heat-shrinkable tubing over using tape or zip ties. The latter always look funky, but heat-shrink tubing goes on completely clean and neat. You just have to plan carefully because the e-tube connection has to go through first, then the brake housing, and then heat it.

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