vivax assist's seat tube motor balances out the performance difference between riding partners in a way other systems can't. Motor rpm can be closely controlled and the rider's personal contribution and speed are factored in by shifting gear, keeping the motor rpm at a high effenciency. Non of the group find the riding too taxing and none find it too easy!
A short push of the push-button switches the drive off again.
The drive switches off automatically in the following situations:
• Under braking
• Pedal frequency less than approx. 15 revolutions per minute (also note the drive cannot be started under this condition)
• If the battery is empty
• If the crank stays still (drive switches off immediately)Storing the pedal frequency
The vivax assist supports you whenever your own pedal frequency is lower than the stored frequency. It is usually best to store the pedal frequency while cycling on the level, so that the drive allows you to easily store the desired setting.
The best assistance is usually found at a pedal frequency of 75/90 revolutions per minute. Pedal frequencies under 50 rpm or over 90 rpm will not be stored. In short, you have something akin to a pedalling cadence cruise control.