{"id":54936,"date":"2023-09-28T16:00:00","date_gmt":"2023-09-28T14:00:00","guid":{"rendered":"https:\/\/www.bikeradar.com\/?p=747241"},"modified":"2023-09-28T16:36:51","modified_gmt":"2023-09-28T14:36:51","slug":"srams-eagle-powertrain-ebike-system-makes-shifting-history","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/cyclingplus\/rss_feed\/srams-eagle-powertrain-ebike-system-makes-shifting-history\/","title":{"rendered":"SRAM\u2019s Eagle Powertrain ebike system makes shifting history"},"content":{"rendered":"

Brose-manufactured motor combines with Transmission gears for Auto Shift and Coast Shift tech <\/p>

By Alex Evans\n \t\t<\/p>

Published: Thursday, 28 September 2023 at 14:00 PM<\/p>

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SRAM\u2019s all-new Eagle Powertrain ebike motor combines the proven on-power shifting performance of Eagle Transmission and AXS wireless technology, while adding automatic shifting to its \u201cholistic E-MTB\u201d recipe.<\/p>\n

While the long-anticipated SRAM motor<\/a> is exciting in its own right, Auto Shift, Coast Shift and wireless connectivity are its most tantalising features.<\/p>\n

Using speed and cadence sensors, Auto Shift relies on Powertrain\u2019s software to select the appropriate gear for your current pedalling rhythm, changing cogs regardless of how many watts you or the bike\u2019s motor are outputting.<\/p>\n

Coast Shift uses the motor to rotate the chainring and cassette independently of the cranks, enabling the system to change gear when you\u2019re not pedalling. Using the speed sensor, it selects the most appropriate gear for your current speed.<\/p>\n

This, SRAM says, is \u201cdesigned to turn on uninterrupted flow\u201d.<\/p>\n

\"SRAM\n<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture>\n<\/div>
Powertrain is controlled wirelessly using SRAM\u2019s Pod Controllers \u2013\u00a0no extra parts are required.<\/span><\/figcaption> SRAM<\/i><\/span><\/div>\n

The made-by-Brose Powertrain drive unit boasts peak 90Nm torque and 680W power figures. It\u2019s compatible with two main battery sizes (630Wh and 720Wh) and a 250Wh range extender.<\/p>\n

Integrating with SRAM\u2019s other AXS components using the tech\u2019s wireless protocol, Powertrain bikes are controlled by SRAM\u2019s Pod Controllers, losing all the clumsy and untidy wiring from the front of the bike.<\/p>\n

Powertrain can be synced with a RockShox Reverb AXS<\/a> seatpost, RockShox\u2019s Flight Attendant<\/a> fork and shock, and Transmission gearing.<\/p>\n

The system isn\u2019t available as an aftermarket upgrade kit, but will be available on four bikes from Nukeproof, Propain, Transition and GasGas in the coming weeks.<\/p>\n

You can read Alex Evans\u2019 review of SRAM Eagle Powertrain here<\/a>.<\/p>\n