Through a compatible shifter or satellite button, a shifting command is sent to the handlebar unit. The handlebar unit wirelessly transmits the shifting command to the smart thru axle using Bluetooth®. The smart thru axle transfers the power needed for shifting and the shifting command to the Powershift hub. The shifting takes place internally within the Powershift hub.
If the smart thru axle does not move or receive a shifting command for 20 minutes, it enters sleep mode. When the smart thru axle is in sleep mode and the handlebar unit sends a shifting command, it takes a maximum of 5 seconds for the smart thru axle to wake up from sleep mode. Once that happens, you can start shifting with the Powershift hub again. As long as the smart thru axle is not in sleep mode, shifting will happen immediately when a shifting command is transmitted.
The smart thru axle transmits your current gear ratio and battery status to your GPS bike computer (not included) using ANT+. Consult the handbook of your bike computer for more information.
The Powershift hub has two gears:
- A 1:1 ratio where the speed of the cassette is equal to the speed of the wheel. This is similar to the large chainring on a traditional 2x.
- A 0.686 ratio (reduction ratio), where the speed of the wheel is lower than the speed of the cassette. This is similar to the small chainring on a traditional 2x.
- Example: 50 x 0.68 = 34. Shifting from 1:1 to the reduction ratio is like shifting from the large to the small chainring on a traditional 2x.
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