Rear wheel bouncing - 600RR.net
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post #1 of 17 (permalink) Old 06-08-2014, 07:12 AM Thread Starter
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Rear wheel bouncing

This is the second time that it happens within a month!
http://www.youtube.com/watch?v=r9zKe...ature=youtu.be
What am I doing wrong?
or what is causing it? cold tire? to much front+rear brake? chain loose? all together?

Last edited by Domia; 06-08-2014 at 07:19 AM.
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post #2 of 17 (permalink) Old 06-08-2014, 08:02 AM
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Rear wheel bouncing

Is it happening over bumps in the road or just under acceleration/braking?

Lost any balancing weights from the rim? Wheel alignment ok?


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post #3 of 17 (permalink) Old 06-08-2014, 08:19 AM Thread Starter
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happened both times on braking in 1th and second gear, street was fine without bumps.
wheel seems to be ok, the bike ride fine as far as i can see.
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post #4 of 17 (permalink) Old 06-08-2014, 08:37 AM
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Were you going downhill at all? I've locked my rear up when I was heavy on the brakes downhill into a turn before

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post #5 of 17 (permalink) Old 06-08-2014, 08:58 AM
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I'm glad you made this thread because mine does the same thing when braking hard using the rear break, i have no idea what causes it so i started using the front brakes only.

one thing i did discover is if my bike is on a rear stand, and i apply the rear brake, there is significant play up and down with the rear brake bracket in the swingarm and i'm thinking that may be part of the problem, along with improper shock settings.
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post #6 of 17 (permalink) Old 06-08-2014, 09:21 AM
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Quote:
Originally Posted by Waru View Post

one thing i did discover is if my bike is on a rear stand, and i apply the rear brake, there is significant play up and down with the rear brake bracket in the swingarm and i'm thinking that may be part of the problem,
Think you could be onto something here. OP, you have this also?



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post #7 of 17 (permalink) Old 06-08-2014, 11:48 AM
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Have you checked your compression setting on the rear shock?

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post #8 of 17 (permalink) Old 06-08-2014, 01:05 PM
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Quote:
Originally Posted by 6hunnit View Post
Have you checked your compression setting on the rear shock?

I'd have thought a lack of adequate rebound damping would be more likely to cause bounce over bumps, Although the fact it happens under braking when most weight is shifted to the front would suggest possibly too much compression damping (ie shock not able to absorb bumps quickly enough) combined with a light rear end possibly = bounce.

Trouble is OP says surface is flat and smooth. Makes me suspect something else, not rear suspension. Check list to go through easily is wheel alignment, wheel balance, chain slack, rear calliper play/movement.


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post #9 of 17 (permalink) Old 06-08-2014, 01:39 PM
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That's your rear brake buddy happens when you lock it up and you don't have the speed to make it squeal. It just starts skipping your rear tire.

Your rear brake is extremely inefficient when used for stopping. Use your front for like 90% of your actual stopping in the street and save the rear for control when turning and on corner entry if you make it to the track.

Regardless you shouldn't use much if it at all on the street. I don't use it at all. If I don't have to. Save it for loose dirt and sand and ****.

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post #10 of 17 (permalink) Old 06-08-2014, 01:40 PM
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Don't touch your suspension. It's fine.

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post #11 of 17 (permalink) Old 06-08-2014, 02:51 PM
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Quote:
Originally Posted by Ldn View Post
That's your rear brake buddy happens when you lock it up and you don't have the speed to make it squeal. It just starts skipping your rear tire.

Your rear brake is extremely inefficient when used for stopping. Use your front for like 90% of your actual stopping in the street and save the rear for control when turning and on corner entry if you make it to the track.

Regardless you shouldn't use much if it at all on the street. I don't use it at all. If I don't have to. Save it for loose dirt and sand and ****.
End thread/. Also, lol
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post #12 of 17 (permalink) Old 06-08-2014, 03:05 PM
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Don't touch your suspension. It's fine.
I was going to reply, suggesting he contact you. Beat me to it.
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post #13 of 17 (permalink) Old 06-08-2014, 05:16 PM
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I was going to reply, suggesting he contact you. Beat me to it.

Thanks man i appreciate it.

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post #14 of 17 (permalink) Old 06-08-2014, 06:14 PM
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Happened to me a few days ago

I am a pretty seasoned rider of 20 + years. It was the first time I experienced this. Very obvious the RR braking attitude is very different to my old F4i...
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post #15 of 17 (permalink) Old 06-08-2014, 06:22 PM
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I only use the rear brake off-roading at the track. I'm not suggesting anyone do this, but it keeps my rear wheel from hopping.
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post #16 of 17 (permalink) Old 06-08-2014, 07:48 PM
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Quote:
Originally Posted by TheX View Post
I only use the rear brake off-roading at the track. I'm not suggesting anyone do this, but it keeps my rear wheel from hopping.
That's the only time I use it myself. On the street it only serves to get me into trouble. My 08 1000RR with stock pads would lock the rear at the slightest touch, Shockingly easy I'd say. The 600 isn't nearly as bad but I still don't consider using it a good idea, at least at my skill level.

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Last edited by Tater S; 06-08-2014 at 07:51 PM.
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post #17 of 17 (permalink) Old 06-09-2014, 07:47 AM Thread Starter
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thanks guys for the prompt replies!
So it's seems that is completely normal, i will try to use the rear brake as less as possible in these situations. thanks.
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