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Is aftermarket traction control any good?
I’ve got hold of a dirt-cheap Suzuki GSX-R1000K7 which is getting the trackday treatment in my garage and thought an aftermarket traction control system might be worth fitting. I’ve read about the Bazzaz unit which seems good. Frank Reynolds, Chippenham
Answered by Chris Dabbs, MCN values to cut the ignition to bring the rate back within limits. It is good at identifying mid-corner throttle snatch as you feed the power back in, but it can’t spot the more common ‘wind-up slide’, powering out of faster corners.
For that you need a wheel-speed based set-up like the Britishdesigned and built Nemesis-tcs. Comparing wheel speeds is the same approach used by every manufacturer and any race-team from National level up to Motogp.
Such systems monitor and compare the front and rear wheelspeeds, keeping mismatches within limits by retarding and cutting the ignition to allow the rear tyre to grip again. Things get complicated when the bike is leaning over because the front and rear tyres have different profiles which changes the mechanical ratio between them as you roll in and out of a turn. Systems like the Nemesis have sensors to build up a map of where you are in a
corner. They calculate the correct error value at each point and provide an appropriate amount of slip, only cutting the spark right on the limit to give the tyre a recovery period to grip again, so it comes back into line but doesn’t stop spinning completely.
The Nemesis system costs just under £1800 and it’s a far bigger outlay than the £593 it costs for a Bazzaz unit.