Traction control...

[aussiemonster]

Shifu that's not necessarily correct. From what I remember, the new kwaka ZX10 uses traction control without wheel sensors, it manages wheel spin by detecting spikes in engine revs. It is much more than just a power down setting. As always, there is more than one way to skin a cat. That doesn't mean all the after market ones will work, but it is possible.

I take your point man, however as a mechanical engineer I doubt very much the reliability of the system that uses anything but the wheels speed comparison to determine if the rear wheel is spinning. Of course I agree that the engine revs will spike as soon as the rear will loose the traction but I doubt whether this method is as reliable. Without doubt it is cheaper and that probably justifies it's use for marketing bamboozle if nothing else, but personally I would not consider it technically speaking a real traction control. There is no more reliable method of detecting the wheel spin than comarison between the front and the rear. Wouldn't you agree?

I agree that measuring wheel speed should be more reliable as you're measuring the exact feature that you want to control. The effectiveness of the engine speed monitoring system is much more dependent on the computing power and software of the system as it has to be able to take into account other variables and the time lag between tyre slip and engine speed increase. But these days when my phone has more computing power than many computers of only a few years ago, that is becoming less of a drawback.