Dialing in eTap® Dialing in eTap®

Dialing in eTap®

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Monday, June 13, 2016

Main image © BrakeThrough Media

With the introduction of SRAM RED® eTap®, setting up a 2x11 road bike has never been easier. The wireless connectivity allows unheard of setup speed that typically takes less time than removing a conventional wired or cabled groupset from a bike. For a step-by-step tutorial on how to install SRAM RED® eTap®, watch the video below. 

When setting up your eTap® bike there are a few important things to consider to ensure that you get the best shifting possible.

First, only use SRAM original equipment parts. SRAM RED® eTap® is designed to function as a complete drivetrain and using non-SRAM parts will compromise the painstakingly engineered shifting performance of the groupset and void the SRAM warranty for your eTap® components. Every part of the system is engineered to work with specific SRAM components. For example, the front derailleur's geometry is made to work specifically with a SRAM 11-speed chain and SRAM chainrings. Additionally, cog and chainring tooth profiles and shift ramps are optimized to work best with SRAM chains.

When installing eTap derailleurs on a previously used SRAM drivetrain, ensure that your drivetrain is clean and free of wear or damage to the chainrings, cogs, and chain that could compromise shifting performance. Regardless of the condition of your used SRAM drivetrain parts, a new drivetrain will always function best and is strongly recommended.

Second, make sure your derailleur hanger is properly secured and aligned. Loose derailleur hanger mounting bolts and bent derailleur hangers can lead to slower or poorer shifting.

Third, take special care when setting the rear derailleur’s B-gap. Check that the gap between the derailleur’s upper pulley and the largest cassette cog is within the required 6-8mm range when the derailleur is shifted into the largest cog. A common setup mistake is to set a larger B-gap that can slow shifting speed.

Press and hold the function button on the shift paddle while actuating the shift paddle to make micro adjustments. 

Fourth, ensure that your rear derailleur is in the proper micro-adjust position. This functionality is similar to that of a barrel adjuster on a mechanical system. If your micro-adjust is trimmed too far outboard, you may still be able to make an inboard shift, but you will perceive that it takes longer. Similarly, if your micro-adjust is trimmed too far inboard, you may still be able to make an outboard shift, but it might take just a bit longer than you prefer. Proper micro-adjust is critical to a high-performance system.

Alexander Kristoff winning stage 7 of the Amgen Tour of California on SRAM RED® eTap®. Photo © Tim De Waele

Adhering to these guidelines will maximize the performance of your SRAM RED® eTap® groupset. If you have any questions or concerns while setting up your eTap® groupset, please contact your local SRAM authorized dealer.

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