Rear tire skidding when downshifting - Yamaha R6 Forum: YZF-R6 Forums
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post #1 of 12 (permalink) Old 09-06-2016, 12:43 AM Thread Starter
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Rear tire skidding when downshifting

I went to the track for the first time. It was fun. The only thing that bothered me was that a couple times coming into this curve where I had to brake quick and then downshift before entering the back tire screeched and lost traction.

Was I just not getting the Rpms low enough? I thought I was but there was so many things to think about and do that was all new.

I'm guessing this was the slipper Mitch engaging and preventing the wheel locking because I didn't match Rpms. I just think it's strange it only kept happening in this one turn.

What did I do wrong?
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post #2 of 12 (permalink) Old 09-06-2016, 05:05 AM
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Re: Rear tire skidding when downshifting

You are not rev matching when down shifting. The engine has to "jump" to compensate for this delta when you downshift. The force is immediately being transferred to your back wheel locking it until the rest of your drive train catches up.

If you are 10k RPM in 3rd and downshift with no rev matching and no "ease in" to the clutch (basically letting the clutch burn and take the hit until the RPMS line up) your rear wheel will lock once you release the clutch. The engine is still going 10k RPM but now your gear box is in second, where the gear ratio in the transmission dictates that the revs should be higher for that gear at that speed.

Long story short - learn to downshift and rev-match (at any gear at any speed within the engines tolerances). You will either blow your engine or go down after locking your wheel bad enough..
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Last edited by PhoenixClave; 09-06-2016 at 05:20 AM.
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post #3 of 12 (permalink) Old 09-06-2016, 10:08 AM
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Re: Rear tire skidding when downshifting

Stay off the rear brake. Rev-match (blip). And learn to enjoy that bit of traction loss, as long as you aren't leaned over at the time.
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post #4 of 12 (permalink) Old 09-06-2016, 10:56 AM
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Re: Rear tire skidding when downshifting

Easier to work on the clutch release for now until you're able to properly Rev-match. Something else you don't really think about once you get used to. Be careful out there. Hope you had fun on your first rodeo.
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post #5 of 12 (permalink) Old 09-06-2016, 11:04 AM
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Re: Rear tire skidding when downshifting

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Originally Posted by Area57 View Post
I went to the track for the first time. It was fun. The only thing that bothered me was that a couple times coming into this curve where I had to brake quick and then downshift before entering the back tire screeched and lost traction.

Was I just not getting the Rpms low enough? I thought I was but there was so many things to think about and do that was all new.

I'm guessing this was the slipper Mitch engaging and preventing the wheel locking because I didn't match Rpms. I just think it's strange it only kept happening in this one turn.

What did I do wrong?

On which bike? This smells like a cast!
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post #6 of 12 (permalink) Old 10-26-2016, 08:25 PM
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Re: Rear tire skidding when downshifting

you werent using the rear brake were you?

what year is your r6?

I have come flying into some turns, hard braking, down shifting and never really had an issue with my rear tires sliding around on my 06' R6r. Maybe it gets a little swag in the rear, but nothing like what you are talking about.
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post #7 of 12 (permalink) Old 08-19-2017, 11:25 PM
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Re: Rear tire skidding when downshifting

Blip the throttle when you're downshifting or invest in a slipper clutch.
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post #8 of 12 (permalink) Old 08-22-2017, 06:31 PM
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Re: Rear tire skidding when downshifting

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Originally Posted by subieseba View Post
Blip the throttle when you're downshifting or invest in a slipper clutch.

The R6r has a slipper clutch from factory


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post #9 of 12 (permalink) Old 08-23-2017, 08:46 AM
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Re: Rear tire skidding when downshifting

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Originally Posted by doidera00 View Post
The R6r has a slipper clutch from factory


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Which is made much better with the slipper clutch mod...
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post #10 of 12 (permalink) Old 10-03-2017, 04:02 AM
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Re: Rear tire skidding when downshifting

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Originally Posted by sdtraviesosd View Post
Which is made much better with the slipper clutch mod...
What is the slipper clutch mod for the r6?
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