WHAT'S NEW

Previous What's New articles

Cervélo S2 & S3 Cable Routing, and more

- The most intriguing detail on the new Cervélo S2 and S3 is its cable routing. Instead of feeding into the frame in the downtube, Cervélo made things more aero by feeding the cables into the top of the top tube, directly behind the headtube.

Cervélo's design is a clever one. But after building up a few S2's and S3's and getting some mileage on them, we identified opportunities to do some nip & tuck work to the design. For starters, the tension of the cables cause them to pull outward as they loop by the stem. This puts them right where your knees pump when you're pedaling out of the saddle. It's an annoyance, something you certainly don't want when you're accelerating in a sprint or a climb. And while we didn't rent a wind tunnel to verify this, we suspect that as your cables creep higher and/or further to the outside of your bike, they're less aero.

So in an attempt to keep our knees happy and our drag minimized we challenged the Competitive Cyclist Advanced Performance Labs to engineer a suitable solution. One part Shiner Bock + one part drill press and voila! it's a Tour de France-caliber set up.

As you can see, we've drilled holes at 3:00 and 9:00 on a stock Cervélo stem cap, and we've looped around O-rings inside to hold the cables in place. It keeps them low and in the centerline of the bike better than any other solution we've seen. And while the O-rings holds the cables, it doesn't arrest them. Unlike zip ties, which won't budge & which will ultimately pull the housing out from under your bar tape if you turn the bars too much, O-rings have some elasticity and will let your cables move a bit when you turn your bars. And, of course, it looks much more PRO than zip ties.

- FYI for First Endurance users, their Peanut Butter Chocolate Chip EFS bars are 100% free of salmonella contamination. Here's what they emailed us: "Every lot of First Endurance products come with a Certificate of Analysis. This Certificate tests for active ingredients and also for salmonella. Prior to a single bar ever being sold salmonella tests have been performed offering 100% assurance that salmonella is not a risk."

- Do you own Hudz brand brake hoods? Here's a pretty cool trade-in program for current Hudz owners.

- Lord knows Bicycling Magazine has its problems, but next time you're at the grocery store see if the March 2009 issue is on the newsstand (it's the one with the cover model whose Twin Six jersey has mysteriously crawled up to the back of his rib cage…) Our pal Michael Barry has a superb article in there called "The Best Hard Time", including beautiful photos from Rouleur veteran Camille MacMillan. Worth buying? Probably not. But worth stealing? Maybe…


January 03, 2010

What does the test team use to keep the gear cables nice and neat as per the attached photo? http://www.thenew3t.com/content.aspx?m=Technology
- Eddie, Melbourne

March 10, 2009

After seeing this, I've got my mind made up to go for a 'straight Ridley' instead
- Timo, Singapore

February 14, 2009

Cervelo didn't invent this system. Cinelli used this cable routing on some of their Lasers back in the eighties.
- David, Winnipeg

February 13, 2009

If I read Gerard's comment correctly,the issue that is "resolved" above is in fact a non issue if you run the correct length of cable housing. Have you experimented with shorter cable housings now and if so, what did you find?
- SZ, ECWI

February 13, 2009

I like how Gerard justifies the design by referencing the "Test Team"..... "it looks ugly, but the Test Team likes it..." Well of course they dont find a problem with it, they get paid to race it. Any bets if this comment gets pulled?
- Frenchie, NYC

February 13, 2009

How can you own a cycling store if you don't like cycling?
- Josh, Saginaw

February 13, 2009

I'm guessing based on the reactions that Cervelo won't be too happy with your post. Particularly since it's garnered the attention of Gerard Vroomen.
- Phil, Walnut Creek

February 13, 2009

How much more hideous can you make something look? With the purchasing decisions for top-of-the line frames coming down to, realistically, aesthetics, why would anyone buy an abomination like this, when you have the swoon-worthy, swoopy and curvy Williers right beside...and don't get me started about the plug where the cable stops should be on the down tube - maybe they can put an integrated waterbottle on the next version....
- Bob, Toronto

February 12, 2009

This cable routing is the dumbest idea I have seen in a looong time. I can't imagine the friction that routing induces in the shift cables.
- Geoff Stone, Bermuda

February 12, 2009

Looks like Cervelo has jumped the shark. That cable routing looks like the product of one too many meetings by a bunch of hyperanalytical mooks.
- PawleeWalnutz, NYC

February 12, 2009

Is it not ridiculous that one must jury-rig a 4500 frameset to make it work properly? The idea of top-tube entry cables may be "intriguing," but it seems in this instance Cervelo got it wrong. And good luck getting the top cap off and making adjustments to the stem or spacers once the cables are fixed to it.
- Tom Joad, Bakersfield, CA

February 12, 2009

The cable issue also disappears if you have the right length of housing. The TestTeam does not encounter this issue at all, on the contrary, they are happy with the new routing because it ELIMINATES the issue of the knees touching the housing. But for that to happen, it is important that the housing is not too long.
- Gerard Vroomen, Cervelo SA

February 12, 2009

Seriously? ...and in the same article, you rip on Bicycling Magazine...? Seriously? This is why cycling is the WHITEST of the whitebread. Jesus. How do you find time to ride when you have so many teeth to fix?
- El Pataron, The Depths Of Hell

February 11, 2009

good initiative, but it looks funny
- julio, nor cal

February 10, 2009

It doesn't happen with normal height stems on my S3. This looks like a Wally setup! Bob, PA
- BOB, PA

February 10, 2009

It will be interesting to see how the Cervelo Test Team Mech's solve this problem once they outfit the bikes with 7900...for now, it's not so much an issue with 7800. Note how they route the shift cables inside the opposite brake cable. http://www.cyclingnews.com/photos/2009/tech/probikes/index.php?id=/photos/2009/tech/probikes/carlos_sastre_cervelo_testeam_s3/10stem
- Phil, Walnut Creek

February 10, 2009

1) that's a lot of spacers under the stem- with a more normal 2cm or less under the stem, might the housing be shorter and obviate the need for this clever work-around? 2) the angle at which the cables enter the TT, I can't imagine getting smooth cable action with this setup. Honestly, I question how much cross-sectional area they're hiding from the wind by doing this and if it really does make a difference...
- David, VT

February 10, 2009

The Cervelo solution a little bit funny but in a very brilliant and practical sort of way.
- Eloy, Brooklyn