Wednesday, March 28, 2012

Honda's Techy Motorcycle ABS: Anti-Lock For the Anti-Anti-Lock Set

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If I had a nickel for every motorcyclist who told me he could stop quicker than an anti-lock brake system, I'd have a small treasure in spare change. "The reality," I usually reply, "is that you probably can't outbrake an ABS-equipped bike during a panic situation."

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Honda ABS

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Honda's?2012 CBR1000RR ABS ($14,800)?leaves little argument for lockup denying luddites. The bike's uprated stoppers (a $1,000 option) are a combined system-- ie, they operate the front and rear brakes independently depending on stopping needs-- and involve a complex sequence of events involving valve units, ECUs, and a motor-driven hydraulic setup that avoids the pulsing sensation in circulating type ABS systems.?Note the smoothness of the blue line on the right (indicating motorcyle velocity) and the finer fluctuations of hydraulic pressure (shown in red):

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Honda ABS Graph

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Since changes in pitch like nosediving or rear squatting alter a bike's suspension geometry (and therefore, its handling characteristics) Honda's system is capable of keeping the bike flat by triggering the rear brake microseconds before the front, helping stabilize the motorcycle. Reassuringly, if these electronics fail the hydraulic system can still stop the bike-- albeit without ABS.

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My point with all this? Though early anti-lock systems on bikes weren't all that convincing (and were sometimes downright disconcerting), Honda's C-ABS works so well you'd never know it's there, and makes you look like a braking hero-- just the way you like it.

Source: http://www.popularmechanics.com/cars/news/auto-blog/honda-motorcycles-combined-abs?src=rss

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