Buell Forum / Buell XB Forum / Buell Lightning XB12S, XB12Ss, CityX, XB12Scg / Troubleshooting / Nasty vibration at 4000RPM
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| Posted: 02 Jan 2010 05:01 | [?] |
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Registered User Currently Offline Join Date: Jan 2010 |
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Got a nasty vibration which started on my 09 XB12Ss about 2 weeks ago? you can really feel it through the pegs....any ideas???
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| Posted: 02 Jan 2010 05:23 | [?] |
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Registered User Currently Offline Join Date: Aug 2009 |
Posts: 643 Reputation: 8 [?] User Rank: Brigadier General 
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ur peg bracket bolts; ur rear isolator bolt; swingarm pivot; rear wheel balance
anything happen too it lately? |
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| Posted: 02 Jan 2010 06:14 | [?] |
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| 4000 rpm in any gear or just at a certain speed? | |
| Posted: 02 Jan 2010 06:15 | [?] |
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Moderator Currently Offline Join Date: Aug 2008 |
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| What RPMs are we talking when the vibrations hit? | |
| Posted: 02 Jan 2010 06:36 | [?] |
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| Look closely at the exhaust hangers mainly the front and the front insulator check the bolts going into the front head | |
| Posted: 02 Jan 2010 07:40 | [?] |
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| Ok thanks, lost the front exhaust clamp at a track day on the 27th, but it was happeneing before then and its getting worse....I'll have a look at the front hanger and bracketry> checked all of the header bolts, front two were a little lose but the rear were fine...it happens at 4000rpm in every gear, really bad at 4000, nothing below 4 then it sort of tales off.... | |
| Posted: 02 Jan 2010 07:42 | [?] |
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| where is the rear isolator bolt? wheels seem ok, its definately engine related....kind of a really nasty high frequency buzz through the pegs..... | |
| Posted: 02 Jan 2010 08:43 | [?] |
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have checked front exhaust bracket hanger bolt, tight as.....rear bolts tight as well, front isolator? the engine stabalising rod at the front is tight, the one that goes from the engine to the front subframe.....
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| Posted: 02 Jan 2010 08:51 | [?] |
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anyone got any other idea,s?????
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| Posted: 02 Jan 2010 09:28 | [?] |
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| recheck any mods done to it; go from there. elevate the rear end, run it thru the gears,,, | |
| Posted: 02 Jan 2010 10:53 | [?] |
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No worries, checked the front isolator, all exhaust bolts, tie rods, etc etc, nothing lose....starting to think perhaps something wrong with the engine? its just coming up for its 16000KM service, got to pop to the dealer on Monday I'll see if one of the mecahnics can go for a spin......bizare... 
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| Posted: 03 Jan 2010 08:45 | [?] |
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Registered User Currently Offline Join Date: Jan 2010 |
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Thanks for the advice........like I said nothing obvious, nothing lose.....all seems to be tight. I'll let thye dealer figure it out...
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| Posted: 03 Jan 2010 08:46 | [?] |
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| Keep us posted dude. | |
| Posted: 03 Jan 2010 11:39 | [?] |
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Will do....i do a lot of track days so i suspect something somewhere has worked lose, buggered if I can find it though........
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| Posted: 03 Jan 2010 13:01 | [?] |
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Moderator Currently Offline Join Date: Jun 2007 |
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16000, best you change your wheel bearings.
check the balance on wheels & axles. also because of the vibration you have, check the play on the front fork. |
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| Posted: 04 Jan 2010 01:38 | [?] |
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Registered User Currently Offline Join Date: Jun 2009 |
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start bike rev to 4k when the vib hits look at the muffler and chin fairing.
i had this issue this summer when i did my custom flow master it is a nastey vibration and you think the bike is about to blow up. i am pretty sure i have a front bracket and clamp i will look tomorrow |
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| Posted: 04 Jan 2010 06:04 | [?] |
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| LeFox is there any reason to change wheel bearings at 16000kms .shit i am at half that now and what tipped me towards the Buell was build quality. I have seen chinese bikes do more k's with no wheel bearing change. sorry i didn't mean to hijak this thread just curious. | |
| Posted: 04 Jan 2010 07:01 | [?] |
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Registered User Currently Offline Join Date: Jan 2010 |
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Thanks, she is due a 16000km service, off to the dealer tomorrow......I checked the rear isolator bolt this am, tight as.....I've checked the front muffler assembly, the bolts etc...interestingly I lost the front exhaust clamp at the last track day (27th) right on the last session........replaced with a large jubilee clip and awaiting a replacement from Peter at SWR moto....wheels seem ok, no excessive play, again forks seem ok, steering and tracking well.....and the engine is pulling fine.....its just the buzzing and vibes through the pegs at 4000rpm...I'll start it up in the garage and have a look at the chin fairing at 4000....thnaks for the advice gent's much appreciated...
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| Posted: 04 Jan 2010 09:51 | [?] |
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Moderator Currently Offline Join Date: Jun 2007 |
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Quote:
LeFox is there any reason to change wheel bearings at 16000kms .shit i am at half that now and what tipped me towards the Buell was build quality. I have seen chinese bikes do more k's with no wheel bearing change. sorry i didn't mean to hijak this thread just curious. my bad, so used to everyone posting miles here i missed the km's. general maintenance advise here is to change out the bearings around 24000km (around the 16000miles service). this to prevent possible belt braking, wheel blockage due to failing bearings. it's an easy and non expensive job...if you change out to higher grade bearings, you will not have to do it as often. 
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| Posted: 04 Jan 2010 11:42 | [?] |
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Registered User Currently Offline Join Date: Jan 2010 |
Posts: 15 Reputation: 2 [?] User Rank: Second Lieutenant
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Latest update.....took her out for a balt and the vibration has gone.......thinking back the only part taken off was the chin fairing, this to allow me to get to the exhaust brackest etc, and to take off the belt pulley cover to check the rear isolator...
Nothing was lose and I checked everything you guys suggested and all were tight as....the only thing taken off and refitted was the chin spoiler, and then tightend right up..../ Thanks for the advice, forums like these are a god send...... heres to the next track day.....
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| Posted: 26 Mar 2010 23:58 | [?] |
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Registered User Currently Offline Join Date: Dec 2009 |
Posts: 193 Reputation: 3 [?] User Rank: Captain
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I only have about 400 mi on by 2010 xb12ss and I just started to have the same problem. I have been combing over my bike, but I havent taken anything off yet. The chin spoiler is my next stop.
BTW nothing happened to the bike. was out for a nice ride, and the bike was fine. Stopped at the gas station just before my house to fill up, and a mile down the road I noticed the vibration once I got get on the throttle. |
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| Posted: 27 Mar 2010 04:23 | [?] |
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Registered User Currently Offline Join Date: Dec 2009 |
Posts: 193 Reputation: 3 [?] User Rank: Captain
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| Ok checked everything out and I still can not find something lose. Vibration is still there. Any other suggestions? | |
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