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Old 09-22-2008, 02:27 PM   #1
PRJKTM OP
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990 Vibration

I took my new 990 Adventure up the motorway for the first time today and was amazed at the terrible engine vibration I get through the handlebars.
Cruising at anything about 4500 revs its so bad that it vibrates right up my arms.
The 950 I just traded in didn't have any vibration.

Any Ideas ?
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Old 09-22-2008, 02:40 PM   #2
switchback
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I just tested one and I thought it was very smooth. Then again I drove in on a thumper.
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Old 09-22-2008, 02:48 PM   #3
mookymoo
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Quote:
Originally Posted by PRJKTM
Any Ideas ?
Throttle body balancing (still relavent on the 990, no?)
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Old 09-22-2008, 02:50 PM   #4
Pax
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Mine is very smooth. I would drive right back to the dealer and ask them to test it out for you if you can't get it sorted immediately. Have you checked all fasteners, engine oil, chain tension, etc?


Quote:
Originally Posted by PRJKTM
I took my new 990 Adventure up the motorway for the first time today and was amazed at the terrible engine vibration I get through the handlebars.
Cruising at anything about 4500 revs its so bad that it vibrates right up my arms.
The 950 I just traded in didn't have any vibration.

Any Ideas ?
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Old 09-22-2008, 06:45 PM   #5
nunzo
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Engine Vibration through the bars?? How about tire balance issue?
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Old 09-23-2008, 01:58 AM   #6
minusone
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Quote:
Originally Posted by mookymoo
Throttle body balancing (still relavent on the 990, no?)
I reckon that might be a problem with mine.
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Old 09-23-2008, 03:54 AM   #7
PRJKTM OP
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Definately not tyre balance because if you clutch in it goes, the vibration is also just as bad when you just rev the engine at a standstill.
The dealer said to let the engine run in and loosen up and bit because it's only done 750 miles but I'm not convinced as my 950 never had this problem.
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Old 09-23-2008, 08:03 AM   #8
fnfalman
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Quote:
Originally Posted by PRJKTM
I took my new 990 Adventure up the motorway for the first time today and was amazed at the terrible engine vibration I get through the handlebars.
Cruising at anything about 4500 revs its so bad that it vibrates right up my arms.
The 950 I just traded in didn't have any vibration.

Any Ideas ?
A lot of that vibration comes from both the windshield and the handguards too.
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Old 09-23-2008, 01:28 PM   #9
Pax
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If you hadn't had a 950 I'd wonder if you were just touchy. However, the 990 should be just as smooth. It just doesn't sound right. Mine was smooth from day one. I'd go back to the dealer and ask them to look it over top to bottom again.

Quote:
Originally Posted by PRJKTM
Definately not tyre balance because if you clutch in it goes, the vibration is also just as bad when you just rev the engine at a standstill.
The dealer said to let the engine run in and loosen up and bit because it's only done 750 miles but I'm not convinced as my 950 never had this problem.
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Old 09-23-2008, 02:37 PM   #10
PRJKTM OP
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I did think when I bought the bike that there was more vibration than my 950. But its definitely worse after I picked it up from the first service.
You can even feel it through the seat and when I got off the bike tonight my arms actually ached.
I hope this isn't 'just one of those things' because it will drive me mad !
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Old 09-23-2008, 03:15 PM   #11
Mad Kaw Disease
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Something definitely wrong with THAT bike (I know ....duh), I just mean it's not common to the model. Mine lugs like any V-twin at low RPM but really gets and stays it's smoothest starting about 4000 rpm.
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Old 09-24-2008, 08:36 AM   #12
Tripndrag
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06 950 - Try adjusting the suspension. I went through all the settings listed in the owners manual and found the setting everything to comfort was the best when it was new. The performace setting gave lots of vibration. After a couple thousand miles I was able to crank everything to performance with no vibration. I also found going 45-55 MPH in top gear results in lots of vibration due to the motor lugging. My speedo is off 5 MPH when compared to my GPS also. Some roads around me are 50 MPH and I was really riding around at 45 MPH thinking I should re-gear the thing. 50 MPH is about as slow as I go in top gear before shifting down on flat ground. Hope that helps.
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Old 09-24-2008, 09:15 AM   #13
emerson.biguns
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I've got the same problem with my '04 Adventure. 4200-4500 there's a horrible vibe.

Can't be tires/suspension. It's RPM related not speed related.

Tell me about throttle body adjustments? Cause and effect?

Thanks,

John

Owner of the Fainting Goat (a 950 Adventure that spends a lot of time on its side...)


(BTW, it's more jiggly than my DR350!)
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Old 09-24-2008, 09:51 AM   #14
lc8john
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Do one trip on highway above 6k rpm and 16x45 transmission and you will see what is vibration!
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Old 09-24-2008, 10:30 AM   #15
emerson.biguns
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I read CP's article on carb syncing and have some questions...

The STE flow meter that CP recommends comes in two sizes and an adapter is available. Which parts do I need?

Using that flow meter, it sounds like I don't need to tap into the vacuum connections on the carbs? Just measure the flow at the intake? Do you need two to measure both simultaneously?

Thanks
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