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FJR Motorcycle Forums
Technical & Mechanical Problems
Un-Linking Front Brakes on 2nd Gens (and later)
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<blockquote data-quote="Fred W" data-source="post: 1358687" data-attributes="member: 3828"><p>The biggest obstacle to this idea of delinking is that the brake system on the FJR was designed as a system. We are (mostly) all in agreement that having ABS on a street bike is of considerable value. That ABS was designed to operate with the braking power of the linked design. The big unknown, which creates a potential safety problem, is that none of us know exactly what effect if any de-linking would have on the function if the ABS system. Add to that the possible liability / insurance concerns and the idea becomes increasingly less palatable.</p><p></p><p>But getting back to the question I asked earlier, what exactly was the goal of the Yamaha design engineers when they came up with this particular flavor of unidirectional brake linking?</p><p></p><p>If their goal was to idiotproof the system for riders with the bad habit of using only the rear brake, then they really didn't go far enough. Unlike the Honda Goldwing system described in that article as "Integrated Braking" where the front and rear are applied in a nearly correct front/rear bias when using only the pedal, the amount of front braking you get from the rear pedal of the FJR is too little to make pedal only use a safe option.</p><p></p><p>Physics says that at maximum brake force the weight shifts forward onto the front end and unweights the rear tire, completely in good traction, so that the vast majority of the available brake force is coming from the front wheel. Unless the rear pedal is capable of lifting the rear wheel and producing maximum front brake power, which the FJR's linked system is not, then doesn't a design encouraging the improper use of the rear pedal alone become detrimental to overall rider safety?</p><p></p><p>And if the intent wasn't to do that, then what was it intended to accomplish?</p></blockquote><p></p>
[QUOTE="Fred W, post: 1358687, member: 3828"] The biggest obstacle to this idea of delinking is that the brake system on the FJR was designed as a system. We are (mostly) all in agreement that having ABS on a street bike is of considerable value. That ABS was designed to operate with the braking power of the linked design. The big unknown, which creates a potential safety problem, is that none of us know exactly what effect if any de-linking would have on the function if the ABS system. Add to that the possible liability / insurance concerns and the idea becomes increasingly less palatable. But getting back to the question I asked earlier, what exactly was the goal of the Yamaha design engineers when they came up with this particular flavor of unidirectional brake linking? If their goal was to idiotproof the system for riders with the bad habit of using only the rear brake, then they really didn't go far enough. Unlike the Honda Goldwing system described in that article as "Integrated Braking" where the front and rear are applied in a nearly correct front/rear bias when using only the pedal, the amount of front braking you get from the rear pedal of the FJR is too little to make pedal only use a safe option. Physics says that at maximum brake force the weight shifts forward onto the front end and unweights the rear tire, completely in good traction, so that the vast majority of the available brake force is coming from the front wheel. Unless the rear pedal is capable of lifting the rear wheel and producing maximum front brake power, which the FJR's linked system is not, then doesn't a design encouraging the improper use of the rear pedal alone become detrimental to overall rider safety? And if the intent wasn't to do that, then what was it intended to accomplish? [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Un-Linking Front Brakes on 2nd Gens (and later)
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