Rear brake "kickback"?

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I did a search and didnt see anything, so I figure Id ask the brain trust.


Ive noticed that on occasion (an occasion that I have failed to replicate) that when Im coming to a stop, the rear brake pedal will suddenly "push up", or become more firm while giving a definite push. I know the front brake is linked to the rear, and all I can figure is that, by some combination of the bike and myself hitting the brakes in a specific way the bike is giving me back the rear brake suddenly.

Granted, I don't feel anything is wrong, but I was just wondering if Im the only one, this is standard, or if this is an anomaly.

Thanks guys!


Also, when I grab the front brake first, should I even bother touching the rear or does that lever supersede all? And should I start hitting the rear first to "cancel" the front taking over?

 

[autoteach]

ABS kicking in

 

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ABS kicking in

really? neither time was i on it hard enough to warrant that (or so I thought, altho i am running knobbies so my traction may be reduced over what Im used to)

 

[Checkswrecks]

really? neither time was i on it hard enough to warrant that (or so I thought, altho i am running knobbies so my traction may be reduced over what Im used to)

While 'Teach is right in mentioning ABS, you probably did not have the ABS kick in due to loss of traction. It is the pump in the unified braking system (UBS) which the ABS is part of and what you felt is normal. Page 3-20 of your owners manual states "Resistance and vibration may be felt in the brake pedal while the front brake is being applied and the unified brake system is enabled, but this does not indicate a malfunction."


The service manual has a little more description in the intro section and a lot more in the brake and troubleshooting sections. Long story short is that the pump is responding to pressure in the different parts of the system, wheel speeds, and some other parameters. It will give a little boost if the available pressure is a bit low.

 

[autoteach]

While 'Teach is right in mentioning ABS, you probably did not have the ABS kick in due to loss of traction. It is the pump in the unified braking system (UBS) which the ABS is part of and what you felt is normal. Page 3-20 of your owners manual states "Resistance and vibration may be felt in the brake pedal while the front brake is being applied and the unified brake system is enabled, but this does not indicate a malfunction."


The service manual has a little more description in the intro section and a lot more in the brake and troubleshooting sections. Long story short is that the pump is responding to pressure in the different parts of the system, wheel speeds, and some other parameters. It will give a little boost if the available pressure is a bit low.

It would probably have been more inclusive to say the abs/ubs module (as it is one system). Either way, even if you don't lock the tire up, a sudden decrease in wheel speed as compared to the other wheel causes the system to see that as a lock up beginning and it changes parameters to avoid it. I notice this happening when I hit bumps or dips, changes in surface, and other variables. As for my normal application of the brakes, I rarely use the rear pedal with the UBS system because it does the work for me.

 

[motoguy]

What autoteach said.
Coming from a KLR I noticed what you are describing right away. You just need to trust the braking system. It works well. The rear pads were the first to wear out at 13k and I don't touch the rear pedal hardly at all.

 

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What autoteach said.
Coming from a KLR I noticed what you are describing right away. You just need to trust the braking system. It works well. The rear pads were the first to wear out at 13k and I don't touch the rear pedal hardly at all.

yall are freakin geniuses. id have been worried i had a brake system screw up and have one more thing to add to the list.

thanks guys.