Tagesarchiv: 21. Januar 2016

SRAM Wireless.

Es ist ja kein Geheimnis mehr, dass SRAM in Kürze ein Wireless Gruppe auf den Markt bringen wird, man kann diese bereits auf der SRAM eTap Website sehen. Somit wechselt die technologische Führerschaft in der Gruppenentwicklung einmal wieder, von Campagnolos letztem Aufbäumen durch die Einführung einer 11-fach Gruppe (sofern man dies als technologische Führerschaft sehen mag), zu Shimanos elektronischer Schaltung zu SRAM wireless elektronischer Schaltung.

Ich musste daran denken, als ich am Wochenende bei meinem 3Rensho Rahmen anfing Schaltungs- und Bremszüge zu verlegen. Sicher, das macht auch irgendwie Spaß und verlangt etwas Konzentration und können, ist aber heutzutage etwa so sinnvoll wie Limo selber herzustellen. Von daher denke ich, dass es nur eine Frage der Zeit ist, bis auch das Bremssystem elektronisch/hydraulisch mit Scheibenbremsen sein wird.

Es folgt vermutlich die Phase des „Downngradings“, also eTap wird wie Di2 zunächst in der teuersten Preisklasse (Red, bzw. Dura Ace) verfügbar sein, bevor es in den günstigeren Gruppen (Force und Rival, bzw. Ultegra und 105) erhältlich ist und die Preise in den Keller gehen.

Interessant wird zu sehen, welchen Einfluss dies auf die Preisentwicklung in rein mechanischen Gruppen haben wird. Werden diese deutlich billiger, weil sie nicht mehr dem Stand der Technik entsprechen und keine Nachfrage danach mehr besteht (siehe Handys vs. Mart Phones?) Oder werden diese teurer, da die Produktionskosten für kleinere Mengen steigen (siehe Plattenspieler vs Streaming)?

via Bike Rumor

SRAM RED eTap – Close up look, more rides & actual weights!


SRAM Red eTAP first rides and actual weights

When we attended the official SRAM Red eTap launch last fall, we provided an in-depth look at the design and development process and first impressions.

Now, they’re closer to production, with an initial run of “P1” units ready for use in the wild. The “P1” designation, as explained by SRAM’s technical marketing manager Nate Newton, means they’re “the final preproduction run”. The idea with the P1 run is that everything: tooling, production lines, parts, are identical to production, but everything gets checked over and allocated internally rather than sold to customers.”

So, that’s what we’ve got here, in for long term testing and mounted to a Cannondale SuperSix EVO with SRAM Red 22, a Quarq power meter and Zipp 202 wheels and tires. Of course, we promptly pulled the eTap bits off and threw ’em on the scale…

SRAM Red eTAP first rides and actual weights

SRAM Red eTAP first rides and actual weights

We put the parts on the scale at the launch event, too, which includes the Blip Box controller for TT/triathlon bikes. Here, on our test bike and our scale, were the standard road parts:

  • Shifter w/ coin cell battery installed – 130g (260g/pair)
  • Blips (pair) – 13g
  • Battery – 24g
  • Front Der. (w/o battery) – 138g
  • Front Der. (w/ battery) – 164g
  • Rear Der. (w/o battery) – 212g
  • Rear Der. (w/ battery) – 236g

That’d put the total weight for shifting parts on a bike using two Blips at 673g. Here’s how that stacks up against the competition’s electrical parts (using actual weights for Shimano and claimed/actual weights for Campagnolo):

RED eTap Dura-Ace Di2 Super Record EPS
Shifter 260g 230g 265g
Front Der. 164g 107g 133g
Rear Der. 236g 213g 199g
Int. Battery 56g 130g
TOTAL 660g 606g* 727g*

*Keep in mind, you’ll be adding a 22-50 grams of wiring and junction boxes, too, which puts Shimano very close to SRAM’s system weight. Campy’s internal battery is larger than Shimano’s and contains a good portion of the wiring, hence the heavier weight. You can find pricing here.

SRAM Red eTAP first rides and actual weights

UPDATED: Final consumer packaging may vary from what’s shown here, but you’ll get a dual USB wall plug, charging cradle, USB cable, battery cover and instructions when you buy the whole group. Complete bikes will include a single charging cradle, but an additional cradle will be available separately. SRAM’s rep says they’ll charge faster with just a single cradle plugged in at a time. At launch, it’ll only be sold as a complete group and include that single charger. As parts start selling individually, the charging cradle will also be an individual package.

SRAM Red eTAP first rides and actual weights

During transport, it’s best to remove the batteries since motion tends to keep the units “awake”. The battery covers have a handle little switch that lets you mark them as charged or not, so you won’t ever be wondering which ones are ready to go, and which will leave you high and dry. SRAM claims 60 hours of ride time per charge.

SRAM Red eTAP first rides and actual weights

The shifters use a standard coin cell battery with a rubber-lined cover plate to keep moisture out. These should last you about two years.

SRAM Red eTAP first rides and actual weights

Each shifter has two Blip ports. Shown above is the standard configuration with a single set installed and a red plug covering the second port. The wires have a red O-ring to keep moisture from entering through the port. On TT/triathlon bikes, the Blip Box replaces the standard shifter levers and provides a short and long set of Blips to reach the ends of the aero extensions and the bullhorn handlebars.

SRAM Red eTAP first rides and actual weights

Blips can be mounted anywhere their wires will reach, and you’ve got four lengths to choose from (150, 230, 450 and 650 millimeters). SRAM sent the test bike with one pair installed on the bottom of the handlebar, but we’ll be moving it slightly to play with ergonomics.

SRAM Red eTAP first rides and actual weights

The brake levers have a small return spring in them to assist the rim caliper in keeping the cable taut, the first time they’ve put it in a lever body that didn’t also have a mechanical shifter paddle. Without mechanical shifting or hydraulic braking internals, the lever bodies are thinner than other RED units, making them very comfortable to grip when standing and grinding through a climb or sprint.

SRAM Red eTAP first rides and actual weights

The rest of the ergonomics are familiar, sharing the basic lever form factor with the rest of the SRAM family.

SRAM Red eTAP first rides and actual weights

The shift paddle is large but doesn’t interfere with finger movement underneath. The Function button is used to pair the shifters with the rear derailleur and make micro adjustments on the rear derailleur.

SRAM Red eTAP first rides and actual weights

A rubber seal surrounds the battery’s contact points on the derailleurs. The third contact point on the battery is for communicating with the charger to ensure proper charging. Both front and rear use the same type of battery, so you can swap them back and forth…no need to keep track of which goes where.

The first rides on home roads felt just as good as our first rides near their German R&D headquarters. Shifting is precise and intuitive, ushering in a new (and arguably much better) interface between rider and bike. Left to shift up the cassette, right to go down it…both to shift front. It really couldn’t be easier and takes all of two minutes for the brain to retrain itself. In fact, I anticipate having a harder time going back to my Di2 or EPS bikes (which already operate opposite each other!) than this one. I know, I know #firstworldproblems. The Cannondale they sent it on is no slouch, either, nor are the Zipp 202’s, so long term testing should be doubly fun. And I’m already scheming a few nifty things to experiment with…


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Eingeordnet unter 2016, Ingenieur, Mob, Uncategorized