Nemesis TCS: the TC Wheelie-Lockout
What is ‘Virtual front speed’ ?
Unlike cars, bikes pull wheelies and when this happens the front wheel speed can no longer be trusted for evaluating slip.
The Nemesis-TCS uses internal sensors and clever ‘real time’ mathematics to identify the start of a wheelie and then use other sensors to create a whole new ‘virtual front speed’ as a comparator of slip all the time the normal front wheel is in the air.
The end of a wheelie is also clearly identified by these sensors and the front wheel is then re-used for slip calculation once it has fully caught up with normal road speed again. View the image below to help you understand this.
Does the Nemesis-TCS have wheelie control?
Our experience has shown that trying to keep the front wheel on the ground is entirely possible but typically it makes the bike slower. Riders instinctively move their weight forward to counteract the rising front wheel, if the wheel is kept down electronically, the rider does not feel the need to move forward which results in the bike accelerating more slowly.
The Nemesis-TCS system gets around this by applying a small power reduction in the early stages of a wheelie to reduce the upward momentum, after this the power is returned to normal in order to drive the bike forward. This is a similar response to the rider rolling back the throttle if the front wheel came up aggressively.
This power reduction only occurs in the lower gears such as 1st and second, and also is more evident if slip maps 6 and above are used.