brake levers mushy - track day - Yamaha R6 Forum: YZF-R6 Forums
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post #1 of 18 (permalink) Old 05-01-2014, 04:48 PM Thread Starter
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Question brake levers mushy - track day

hey i am new to track days, done three weekends totally
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. In my last track day I noticed that I couldn't brake with two fingers, my levers went closer to my throttle bar . My rest of the fingers were sandwiched between the levers and the throttle . Is some thing wrong with my brakes fluid ? Is it usual that the brake will become mushy after couple of sessions ?
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post #2 of 18 (permalink) Old 05-01-2014, 04:59 PM
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Re: brake levers mushy - track day

Upgrade your break lines. That will help with fade. Change out the brake fluid until then and make sure you get all the air bubbles out. Don't forget about bleeding the master cylinder as well, not just the calipers.
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post #3 of 18 (permalink) Old 05-01-2014, 05:09 PM
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Re: brake levers mushy - track day

what he said.. start with a good fluid bleed. Chances are your fluid is quite old, and has attracted a reasonable amount of water. I change fluid every few months (racing). There is no need for expensive, fancy brake fluid on an R6. I use stock Dot4 fluid, right off the dealership shelf. DO NOT mix dot 5 with dot 4. Just stick with dot 4.
As he said above, ya may need to upgrade to steel braided lines if you are at an intermediate pace or better, and hard on the brakes at your track. The fluid gets hot, and the stock lines will expand a bit.. giving a mushy feeling and the lever comes back further. But start with a complete brake fluid flush. There are LOTS of youtube vids on how to do this, or search this forum.

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post #4 of 18 (permalink) Old 05-01-2014, 05:10 PM Thread Starter
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Re: brake levers mushy - track day

Thanks will change the brake fluids and try it. i have already steel braided lines on my r6.
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post #5 of 18 (permalink) Old 05-01-2014, 05:12 PM
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Re: brake levers mushy - track day

^
What he said. You don't absolutely NEED to upgrade your brake lines but it will help. Flush and bleed the system with new fluid though.


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post #6 of 18 (permalink) Old 05-01-2014, 05:14 PM Thread Starter
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Re: brake levers mushy - track day

willl change the fluids and will update here after the next track day
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post #7 of 18 (permalink) Old 05-01-2014, 05:33 PM
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Re: brake levers mushy - track day

Manesh
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It's Ricky. I like using the Motul RBF600 DOT 4. Do a thorough rebleed and see how it is. What lines do you have?


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post #8 of 18 (permalink) Old 05-01-2014, 05:35 PM
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Re: brake levers mushy - track day

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willl change the fluids and will update here after the next track day
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just take your time on doing the fluid flush. Or have a pro do it.. but it's easy, just a few things have to be done right. Also, do NOT fill the fluid resiv. all the way. Put it between the lines on the side of the cup. Filling all the way, can have it push out and pit your screen and paint as the fluid gets hot (fluid expands when it gets warm as we know
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post #9 of 18 (permalink) Old 05-01-2014, 05:43 PM
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Re: brake levers mushy - track day

could always install a set of the stahlbus bleeder valves. my brake lever is rock hard, and i flushed/bled the entire system alone in about 4 minutes (and another 3 on top of that was installing the bleeder valves).
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post #10 of 18 (permalink) Old 05-01-2014, 11:35 PM Thread Starter
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Re: brake levers mushy - track day

hey ricky
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I have galfer brake lines ..Thanks Going to rammy place this weekend to change fluid and bleed brakes.
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Manesh
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It's Ricky. I like using the Motul RBF600 DOT 4. Do a thorough rebleed and see how it is. What lines do you have?


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