SRAM eTap
08-26-15 | 11:40 AM
#51
On Your Left
Joined: Nov 2011
Posts: 8,373
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From: Long Island, New York, USA
Bikes: Trek Emonda SLR, Sram eTap, Zipp 303
08-26-15 | 11:47 AM
#52
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Joined: Apr 2014
Posts: 45
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From: Kansas City
It's a proprietary protocol on the Bluetooth/wifi/ANT+ frequency band, and it has 128-bit encryption. So there is security. As for interference, it could happen, but my ANT+ power data is rock steady even in a peloton of 60 other dudes using ANT+ power meters. Obviously, this is not the exact same thing, and use at a mass production scale is pretty much certain to reveal problems that SRAM's detailed but inevitably limited pre-production testing did not find. But I would not be particularly concerned with interference. We'll see, I guess.
08-26-15 | 11:49 AM
#53
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From: Houston, TX
Bikes: 1990 Romic Reynolds 531 custom build, Merlin Works CR Ti custom build, super light Workswell 066 custom build
08-26-15 | 11:57 AM
#55
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From: Houston, TX
Bikes: 1990 Romic Reynolds 531 custom build, Merlin Works CR Ti custom build, super light Workswell 066 custom build
I wonder what just the derailleurs and levers will cost for a conversion...UK price.
08-26-15 | 12:02 PM
#56
FLIR Kitten to 0.05C
Joined: Sep 2014
Posts: 5,331
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From: Lincoln, Nebraska
Bikes: Roadie: Seven Axiom Race Ti w/Chorus 11s. CX/Adventure: Carver Gravel Grinder w/ Di2
Hopefully Campy et al will adopt it soon. Do love the Campag ergonomics...and my Seven does love new swag, although she was made for mech shifting not electronic-so wireless would be just the thing.
08-26-15 | 12:10 PM
#58
pan y agua
Joined: Aug 2005
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From: Jacksonville
Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike
And you can buy the seatpost with the battery installed. Most complicated part of the assembly is knowing that you need a little fork tool to plug the connectors in.
__________________
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
08-26-15 | 12:13 PM
#59
pan y agua
Joined: Aug 2005
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From: Jacksonville
Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike
Allegedly last a year. Obviously depends on how much you ride and how much you shift. Based upon how often I replace 2032 batteries in my QuarQ, and Vector pedals, (which admittedly are in more constant use) I'd wager its more frequent than yearly if you ride a lot.
__________________
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
08-26-15 | 12:17 PM
#60
Thread Starter
Brown Jersey Winner
Joined: Apr 2012
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From: The Bad Woods.
the vid shows a dollar symbol but seeing as theyre a uk based channel im not sure of the currency
08-26-15 | 12:46 PM
#62
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Joined: May 2013
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From: DFW
Bikes: Steel 1x's
I'm guessing that is a joke, but I wonder if they'll ever go that way.
It's one thing to go electronic on shifting, but a whole other to hope the computer stops you from running off a mountain.
Think of the lawsuits.
It's one thing to go electronic on shifting, but a whole other to hope the computer stops you from running off a mountain.
Think of the lawsuits.
Last edited by Jarrett2; 08-26-15 at 12:50 PM.
08-26-15 | 02:14 PM
#64
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From: BOSTON BABY
Originally Posted by Cycling Tips
SRAM say that electromagnetic interference has been well tested in a multitude of environments and they’re confident that AIREA is rock solid against accidental interference, jamming, and hacking. SRAM has reportedly only been able to count a handful of times a mis-shift has occurred in all of their testing.
Sure hacking is theoretically possible, but the transmit/receive radius is approximately 100 meters and each device can only be paired with one other device (if something comes unpaired, the whole system needs to be re-paired). Combined with 128-bit AES encryption, FHSS, and hopefully the lack of will by hackers, SRAM is not concerned about a lack of security in the slightest.
Sure hacking is theoretically possible, but the transmit/receive radius is approximately 100 meters and each device can only be paired with one other device (if something comes unpaired, the whole system needs to be re-paired). Combined with 128-bit AES encryption, FHSS, and hopefully the lack of will by hackers, SRAM is not concerned about a lack of security in the slightest.
From: Will wireless shifting be a game-changer? SRAM introduces eTAP | CyclingTips
08-26-15 | 02:43 PM
#65
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From: California
Making it easier to swap out batteries, since they are detached in seconds. They are heavier than the derailleurs them selves, I would look into a race day battery.
08-26-15 | 03:05 PM
#66
pan y agua
Joined: Aug 2005
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From: Jacksonville
Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike
On the type of race where a tiny bit of weight savings might be of concern, i.e. long hilly road race, you'd want a fair amount of capacity. So you're "race day battery, you'd still want to cover 100 plus miles racing, plus a warm up, and have a good safety margin built in. I don't see such a battery saving even half of the weight of the normal battery.
The entire rear battery weighs 24 grams, can't find a weight for the front battery, but assume even 50 grams, a race day version of both batteries might save 20-30 grams or an ounce give or take.
__________________
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
08-26-15 | 03:18 PM
#67
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Joined: Jul 2013
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From: Columbus, GA
Bikes: 2014 Cervelo R5 Dura Ace,2014 Specialized S-Works Roubaix
HA! Found this out a couple weeks ago!
Di2 essentially accomplishes the same result. If you forget to recharge it, the FD, which takes more power, is disabled, but you retain the ability to shift on the rear, until the battery's gone. It will work I this mode for at least 40 miles (don't ask me how I know this.
)
)
08-26-15 | 03:29 PM
#68
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Joined: Jun 2014
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From: California
I don't really see it worth the effort. The current batteries claim 600 mile range.
On the type of race where a tiny bit of weight savings might be of concern, i.e. long hilly road race, you'd want a fair amount of capacity. So you're "race day battery, you'd still want to cover 100 plus miles racing, plus a warm up, and have a good safety margin built in. I don't see such a battery saving even half of the weight of the normal battery.
The entire rear battery weighs 24 grams, can't find a weight for the front battery, but assume even 50 grams, a race day version of both batteries might save 20-30 grams or an ounce give or take.
On the type of race where a tiny bit of weight savings might be of concern, i.e. long hilly road race, you'd want a fair amount of capacity. So you're "race day battery, you'd still want to cover 100 plus miles racing, plus a warm up, and have a good safety margin built in. I don't see such a battery saving even half of the weight of the normal battery.
The entire rear battery weighs 24 grams, can't find a weight for the front battery, but assume even 50 grams, a race day version of both batteries might save 20-30 grams or an ounce give or take.
08-26-15 | 03:37 PM
#69
Senior Member
Joined: Jul 2015
Posts: 406
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From: Southern Oregon
Bikes: Full campy Record EPS BMC Team Machine slr01, Canyon CF SL 8.0 Endurance
I'd like to know if and how FD auto-trim has been implemented with the eTap system. Or is SRAM still relying on their "yaw" technology to deal with that.
08-26-15 | 04:06 PM
#70
These's a number of reviews around. It looks like it'll be available in 2016. I might make the move to electronic/11 speed at then. I hope they release the Force version quickly because $3000. for components is a little high.
08-26-15 | 04:32 PM
#72
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From: Houston, TX
Bikes: 1990 Romic Reynolds 531 custom build, Merlin Works CR Ti custom build, super light Workswell 066 custom build
I'm happy to continue with my current crank and brakes. The crank is 10 speed, but I'm pretty sure it will work fine. I just need the derailleurs and levers. I use KMC chains anyway and could save a few bucks on a Force or Ultegra cassette.
08-26-15 | 05:22 PM
#73
Thread Starter
Brown Jersey Winner
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From: The Bad Woods.
Originally Posted by SRAM
SRAM RED ETAP Front Derailleur
SRAM YAW™ technology changed front shifting forever, eliminating the need for trim. The SRAM RED eTap Front Derailleur makes a good thing better by executing front shifts confidently and quickly over our proprietary wireless communication protocol. While the eTap shifter optimizes Yaw™ shifts as needed throughout the gear range with no need for rider input. At 187g including battery, the SRAM RED eTap front derailleur maintains SRAM’s best-in-class weight title.
SRAM YAW™ technology changed front shifting forever, eliminating the need for trim. The SRAM RED eTap Front Derailleur makes a good thing better by executing front shifts confidently and quickly over our proprietary wireless communication protocol. While the eTap shifter optimizes Yaw™ shifts as needed throughout the gear range with no need for rider input. At 187g including battery, the SRAM RED eTap front derailleur maintains SRAM’s best-in-class weight title.
08-26-15 | 08:00 PM
#74
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Joined: Jul 2015
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From: DFW
Bikes: 2016 Cannondale Synapse 105, 2016 Salsa Pony Rustler X01
I come from a remote control airplane background. FHSS is seriously good ****. Big group flys happen where thousands of people are able to share the spectrum at once with this technology. Interference is simply not going to be an issue unless someone is running a pretty dedicated jammer on you.
Also, knowing what good high torque digital servos cost... holy **** this is expensive. Apparently when you spec a servo out for a bike like this you need it made of solid gold.
Also, knowing what good high torque digital servos cost... holy **** this is expensive. Apparently when you spec a servo out for a bike like this you need it made of solid gold.
08-26-15 | 08:21 PM
#75
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Joined: Mar 2015
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I come from a remote control airplane background. FHSS is seriously good ****. Big group flys happen where thousands of people are able to share the spectrum at once with this technology. Interference is simply not going to be an issue unless someone is running a pretty dedicated jammer on you.
Also, knowing what good high torque digital servos cost... holy **** this is expensive. Apparently when you spec a servo out for a bike like this you need it made of solid gold.
Also, knowing what good high torque digital servos cost... holy **** this is expensive. Apparently when you spec a servo out for a bike like this you need it made of solid gold.