reare brake weak? - Page 4 - Honda CBR1000 Forum : 1000RR.net
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post #31 of 48 Old 11-20-2012, 05:20 PM
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Harro. I has a CBR1000RR and after like half a year I noticed that my rear brake is wayyy softer than front brake. I read this thread and thought there is air in my brake system so I went to the mechanic and he said, on literbikes the rear break is weak by design, because "if you lock up your rear wheel, you are dead." He said, 90% braking power is front, 10% is rear, and the rear brake is supposed to be used for speed modulation only. I had a Nighthawk before the CBR and on the nighthawk the brakes are super-snappy, like SNAP!!! and the wheels are locked. On a gixxer 750, also. But on the liter CBR it is not so. My mechanic says it is by design.

(BTW great forum guys, and great bikes. Good stuff Honda.)
Find a new mechanic lol thats the dumbest thing iv ever heard!!! Bleed your rear brake. Good as new. My back brake is fantastic and i never use it unlesss im covering it backing it in on the track. But you should never really use your rear brake on any sport bike were talking a diff of maybe 15 ft if you dont panic and stomp on it and everything goes well

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post #32 of 48 Old 11-20-2012, 05:23 PM
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Well, he argued as follows: "look at the size of the front brake. Then look at the size of the rear brake." The front brake disk is huge and the rear brake disk is tiny. (I can send pics upon request.) Doesn't that mean that the rear brake is meant to be significantly weaker?
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post #33 of 48 Old 11-20-2012, 05:44 PM
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Obviously theyre different sizes, don't know If you noticed but there's two as well.

And yea comparing the two is like bicycle to motorcycle.


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post #34 of 48 Old 11-20-2012, 05:45 PM
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When i bought the bike, my rear brake was weak, it could still lock up the rear wheel,but had to press a lot, like really a lot to lock it up.and then this year before i store bike for winter, i bleeded the brakes and i fucked up something and i get on street to try it and it was even worse. So i said i will look into.so i dissmounted the brake caliper, cleaned everything, pads, caliper,cylinders and put very small ammount of brake lube-grease on where pads slide and bleeded the whole sistem again and step by step i all bubbles were out and now i have very very nice brake, like its brand new.just touch it and brakes nice,press little more and locks up.

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post #35 of 48 Old 11-20-2012, 05:46 PM
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[QUOTE=piousbox;2123047]Well, he argued as follows: "look at the size of the front brake. Then look at the size of the rear brake." The front brake disk is huge and the rear brake disk is tiny. (I can send pics upon request.) Doesn't that mean that the rear brake is meant to be significantly weaker?[/QUOTE

Thats a terrible explanation. He is correct i guess but the way hes explaining it is wrong. That would be like saying there forks in the front and a shock in the back instead of vice versa?

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post #36 of 48 Old 11-20-2012, 05:52 PM
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From ow.ly/fsgXn
"Most motorcycles that come with a rear disc brake use a smaller rotor than the front, and a smaller caliper too. Some cruiser bikes excepting. My bike for example has twin 310mm rotors in front, clamped by 6 piston calipers on each. The rear is a 240mm, clamped by a single piston. Obviously there is much less braking in the rear, and it's actually hard to lock up my rear brake."

Yeah well. Maybe I'm not doing a good job conveying what he said to me. Don't get me wrong, if you can convince me that I'm wrong I'll go bleed the rear brake, it's no problem ~__^
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post #37 of 48 Old 11-20-2012, 06:19 PM
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If you don't have a firm feel to the rear pedal you have a problem.
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post #38 of 48 Old 11-21-2012, 01:11 AM
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Has anyone taken the time to adjust the rear brake pedal position to its optimum setting?

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post #39 of 48 Old 11-21-2012, 03:23 AM
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Has anyone taken the time to adjust the rear brake pedal position to its optimum setting?
I tried i wasnt sure and i stopped before i damage something.

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post #40 of 48 Old 11-21-2012, 10:20 AM
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Has anyone taken the time to adjust the rear brake pedal position to its optimum setting?
yes.
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