Slight stuttering/vibrartions when breaking. 2011 speedy - Page 4 - Triumph Forum: Triumph Rat Motorcycle Forums
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post #31 of 46 (permalink) Old 09-19-2012, 04:38 PM
Main Motorcycle: 2011 speedie
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Location: nth/lincs england
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old experiance

had the same experiance on a 2008 rsv100r,sunlite disc fitted as standard,bought new rotors set same make problem came back again 2 k later.aprilia exchanged these for brembo no problems.

check the run out of rotor circumference(90 degrees to brake pads)
hope this helps

just run up 4k will be looking for same problem
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post #32 of 46 (permalink) Old 09-24-2012, 04:13 AM Thread Starter
Grand Prix 250
Main Motorcycle: S3 2011 ABS White
Join Date: Jun 2012
Location: Sweden
Posts: 71
Just a quick update, bike is at the dealership now, and they got a new head mechanic. He immediately recognized the issue as a faulty steering bearing. Fingers crossed this time.
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post #33 of 46 (permalink) Old 09-24-2012, 04:34 AM
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Main Motorcycle: 2009 Sprint ST
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Just started having this on my 09 Sprint ST, no ABS, 16000km. New front tyre (Pilot Road3) with 2000km on it. Sometimes hear & feel a "clunk" through the bars when practicing an e-stop too, as well as the shuddering. Thinking headstock re-torque for a starting point after reading this thread,as well as disc/pad check.

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post #34 of 46 (permalink) Old 10-03-2012, 06:57 AM Thread Starter
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Main Motorcycle: S3 2011 ABS White
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Another update, a never ending story but with a glimpse of hope.

The bike has been at the dealership for 1,5 week now. Didn't get any good answers over the phone so I decided to pay them a visit. Talked to the head mechanic and he told me that the rotors are straight but varies in thickness, and they have been/are waiting for a "OK" from England? to change the rotors. Cant blame the dealership for the long wait, but wth.. does Triumph England really have to "ok" every warranty issue?

Anyhow, the mechanic told me that he himself wouldnt accept the way the bike handle during breaking, and that they have _another_ speed triple 2011 with the same issue in the shop. So at least there is some hope.
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post #35 of 46 (permalink) Old 10-03-2012, 09:47 AM
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On my new 2011 (non-ABS); I get a considerably hard knock when grabbing a handfull of brake at slow speeds and have concluded that the "Floating Rotor" is mostly responsible for that noise, which is normal. I can grab the rotor while parked and duplicate the noise by moving it back and forth in place.

I also get a ticking noise from the front when braking; almost like the sound of the micro (lever mounted) brake light switch sound, only its coming from the caliper area....

On occassion, I feel a knock through the bars and have questioned if there was also a little play in my steering neck. How can I check that it is torqued correctly. I can't find anyone to hold the rear down with the front up to try wiggleing the front forks. Is there another way to check? the two theaded washers under the top triple clamp seem to be tight when checking with my hand.....

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Last edited by Rayzor61; 10-03-2012 at 09:55 AM.
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post #36 of 46 (permalink) Old 11-05-2012, 02:43 AM Thread Starter
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Main Motorcycle: S3 2011 ABS White
Join Date: Jun 2012
Location: Sweden
Posts: 71
After almost 2 months at the dealership they finally decided to replace the rotors/discs, and well, the problem went away. I´m stumped as to why it would take that long to try the most obvious course of action. But at least it seems that I get my bike back, awsome since it's now 4 degree celcius and raining =).

Thanks for all the input and ideas. cheers.
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post #37 of 46 (permalink) Old 11-07-2012, 12:54 PM
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Main Motorcycle: 2011 Speed Triple
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You might find this interesting. Please read Myth nr. 1 in the article below.
Although it is about car brake discs, I've experienced myself that applying the brakes "violently" a couple of times during a ride keeps the rotors clean and feeling perfectly free from vibrations.
It is also known that Brembo brake systems tend to retain "dirt" / friction material on their rotors. This was stated several times in Dutch bike magazines and is also experienced by for example Aprilia ( had the same myself on my Mille) and Ducati riders. Many of these owners have their second set of discs mounted. Check their forums.

Last edited by SpeedMartin; 11-07-2012 at 01:03 PM.
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post #38 of 46 (permalink) Old 11-07-2012, 07:22 PM
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post #39 of 46 (permalink) Old 11-08-2012, 06:22 AM
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Main Motorcycle: 2013 Street Triple R
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I have had this issue on my S3 when it was 18 months old with only 4000 miles on the clock. It seemed to come on suddenly. Thought it was due to worn front tyre. Changed that and problem reduced slightly, but still there. I've been using the bike daily for the last month and the problem has gone. Discs and steering head were check at service time and were OK. Before the judder the bike had been laid up for a while and I suspect the pads had rusted onto the discs slightly. This would tie into the thread above as the area the pads had bound would have different friction properties. As I have used the bike more, the problem has gone. I may try some hard braking if the weather would givve me some dry roads!
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post #40 of 46 (permalink) Old 11-09-2012, 04:02 AM Thread Starter
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Main Motorcycle: S3 2011 ABS White
Join Date: Jun 2012
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Posts: 71
For me, I tried most of tips that I got after starting the thread, cleaned rotors, scuffed em', changed the pads, tried breaking hard and even tried breaking soft for a little longer periods, nothing helped so I finally had the dealership look at it, they couldn't solve the problem either and went ahead and changed the rotors (although after a very long wait) which solved the problem. According to the mechanic the rotors was not warped but had a variation in thickness (if that makes any sense).
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