Clunking when locking rear brake

[tinbender0]

I was playing around with the rear brake pressure trying to find the lock up threshold . When the rear tire locks up a pulsing or clunking occurs,the sound is almost similar to a cars antilock brakes?

? Is this normal?? I don't think its the chain slapping around..tension is OK

 

[Revlis]

IF there is pulsing then the wheel isn't locked, mostly I would simply not lock the rear brake...

Seriously though, there shouldn't be any clunking...

 

[tinbender0]

under normal braking it's fine. No noises or vibrations.just when locking it up. I've only done it a few times but it has made the sound each time..maybe i need to ask the dealer about it.

 

[frisbee]

Dumb ?? but I gotta ask , is the clutch pulled all the way in when you lock up the rear?

 

[tinbender0]

yeah, the clutch handle is pulled in.



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[adrenaline junkey]

what about chain slap is it adjusted properly

 

[tinbender0]

chain is ok.....wonder if the clutch/trans is still engaged even though the clutch lever is pulled in?

 

[Gunnybusa]

How about the cush lock jumping back and forth?

 

[tinbender0]

Is that typical???

 

[Gunnybusa]

It's not "typical: to lock up the rear, but it will move back and forth under all that stress.

 

[tinbender0]

thanks for the help...i don't make it a habit, just playing around with hard braking.thats when i heard the noise almost a ratcheting,clunking sort of noise.Was wondering if all of the busa's did it..thanks again



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[fritch1969]

my 02 does the same thing

 

[CorrodedAlien]

Check the bolts.... The brake assy is meant to move a little while changing the rubber. Check all the bolt torques...