Barber track day rewind - ZX6R Forum
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post #1 of 8 Old 06-07-2016, 01:23 PM Thread Starter
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Join Date: Sep 2015
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Barber track day rewind

I finally got my first track day of the year in!!! The first 2 sessions felt awkward at first as I have not put many miles on my bike this year. After that I fell into the groove so to speak. I only remember getting passed by about 4 people throughout the entire day aside from warm up laps and instructors, so I must have been doing decent

I focused on being smooth and maintaining corner speed vs adding a shit ton of power out of the hole, so my rear tire thanked me and I didn't have to worry much about the rear stepping out like last year.

One of the turns I wanted to work on was the chicane. It was suggested to me that I try a higher gear to lower engine RPM's to make the high speed tip easier, that did wonders. I was able to maintain 15 to 20 mph higher mid corner speed because of it and was able to drive across the whole track instead of being done with the turn and still having lots of track left.

I had 2 issues. Firstly my legs were screaming on fire the whole time causing me to duck out of the sessions early... I cant seem to keep the weight off my inside leg.

Secondly was brakes. I'm apparently using more brakes, I drove further into the turns and had higher entry speed. Throughout the day toward the ends of the sessions they almost got spongy. Instead of just increasing pressure on the lever like always, it would actually travel farther towards the grip while I increased pressure. Especially on hard braking dumping 50 mph or so. I also developed a high speed vibration during braking only on the end of the front straight. The onsite suspension guy said it was because Indy cars had just run there and they rippled the track in the spot I was feeling the problem. But it was after the last sessions when I talked to him so I didn't get to try a different line.

Getting ready to head out


Heading to the first session


I can turn left

and I can exaggerate for pictures...


And I can turn right... a little


Before and after track day tire.

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post #2 of 8 Old 06-07-2016, 01:28 PM
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Lookin good!

You coming out with us in August??
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post #3 of 8 Old 06-08-2016, 09:16 AM Thread Starter
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I'm mulling it over with a friend...
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post #4 of 8 Old 06-08-2016, 09:46 AM
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Awesome! Can't wait to go in August.
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post #5 of 8 Old 06-08-2016, 11:57 AM
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Looking great! That tire wear looks just about right, too.

As for your spongy brakes, welcome to actually using them the way they were meant to be used ;-)

That is called 'brake fade' and it happens when you start to brake harder and the fluid starts to boil. Try flushing your fluid and replacing with a high-temp race fluid (I use Motul RBF600), it will do wonders. I still get some fade but nowhere near as much as I used to with other fluids.
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post #6 of 8 Old 06-13-2016, 09:32 AM Thread Starter
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The tire wear is not as impressive this time as it was last time at the same track despite the increased speed. I was accelerating harder with more lean angle last time as compared to this time. The acceleration marks ere almost to the edge of the tire.
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post #7 of 8 Old 06-21-2016, 01:02 PM
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sweet man! also just got my first trackday in this season a week ago.
what tyres were u running?
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post #8 of 8 Old 06-30-2016, 10:16 AM Thread Starter
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