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Author Topic: Excessive 110 vibrations at 2500 rpm ... see update  (Read 4684 times)

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Never Better

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Excessive 110 vibrations at 2500 rpm ... see update
« on: January 06, 2009, 12:23:37 PM »
UPDATE on 110 Engine Vibration .... see bottom of page.

Hi Ya'll,

I recently bought an 08' SERK with 6,000 miles. It has RH True Duals and a PC. Runs great with the exception .... between 2000 and 3000 rpm, the vibration is numbing. The vibration maxs out at 2500 rpm. You can feel it at all speeds or on just on the stand in neutral. I took out the PC to see if that was a cause and the vibration is still there. Does anyone have the same experience? If so, did you find a remedy?

Never Better

UPDATE: 1/13/09 .... took the bike to local HD dealer for a check out ride. The Master Tech confirmed a "buzz" at the 2500 to 3000 rpm range and shrugged it off as normal. Maybe normal for a bike that's got more than 6,000 miles on it and a "buzz" turns into a hand and feet numbing vibration when riding at highway speeds for any length of time (more than 5 minutes). HD has said that in order to really evaluate the vibration, I need to restore the exhaust system to it's factory set up. They said after market exhaust systems can cause vibrations.

UPDATE: 3/11/09 ..... a new flywheel was installed on my bike and it runs out with no vibration. smooth as can be. THANKS to the folks at HD for taking my concerns seriously and doing the right thing.
« Last Edit: March 25, 2009, 03:47:06 PM by Never Better »
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miker

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Re: Excessive 110 vibrations at 2500 rpm
« Reply #1 on: January 06, 2009, 12:26:08 PM »
Welcome, check for missing wheel weights...tire pressure...add on swing arm stailizers can add some shake too...
                     
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Black Diamond

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Re: Excessive 110 vibrations at 2500 rpm
« Reply #2 on: January 06, 2009, 12:58:32 PM »
Quote from: Never Better on January 06, 2009, 12:23:37 PM
Hi Ya'll,

I recently bought an 08' SERK with 6,000 miles. It has RH True Duals and a PC. Runs great with the exception .... between 2000 and 3000 rpm, the vibration is numbing. The vibration maxs out at 2500 rpm. You can feel it at all speeds or on just on the stand in neutral. I took out the PC to see if that was a cause and the vibration is still there. Does anyone have the same experience? If so, did you find a remedy?

Never Better

Check to make certain your exhaust isn't touching brake lever / foot rest! Some RHTD do that.

JW
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Hoist!

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Re: Excessive 110 vibrations at 2500 rpm
« Reply #3 on: January 06, 2009, 01:01:29 PM »
Quote from: miker on January 06, 2009, 12:26:08 PM
Welcome, check for missing wheel weights...tire pressure...add on swing arm stailizers can add some shake too...
                     

Yeah, so can a bad crank! ::) ;D ;)

Hoist! 8)
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miker

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Re: Excessive 110 vibrations at 2500 rpm
« Reply #4 on: January 06, 2009, 01:02:36 PM »
Just cause you broke yours!   :orange:
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9 1/2 Beers

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Re: Excessive 110 vibrations at 2500 rpm
« Reply #5 on: January 06, 2009, 01:03:27 PM »
header pipe hitting the rear brake peddle ?
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Gecko

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Re: Excessive 110 vibrations at 2500 rpm
« Reply #6 on: January 06, 2009, 01:04:12 PM »
Since it does it sitting on the side stand I'd dismiss wheel weights or other non-engine sources.  Mine does it right at 3000 rpm, which fortunately is a little above normal highway speed.  I thought it got worse when I switched to V&H true duals.  I am wondering if the exhaust is transmitting some vibration to the chassis?  Perhaps try loosening and re-tightening the pipes and see if they reposition themselves?
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Chrome O

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Re: Excessive 110 vibrations at 2500 rpm
« Reply #7 on: January 06, 2009, 06:06:11 PM »
I had the same problem, just a short ride would hurt your teeth, "I kid you not"...  Took to the dealer and the front motor mount rubber bushing was missing.

They said its fixed come get your bike, rode it out of the dealership and around the corner and back, it was better but not like before. 

This poor mechanic spend half a day looking for it and finally started called other dealerships if ANYONE had incounter this same problem and someone told him to look between the rear of the motor and the brace or in between the motor and the motor mount...cant recall at the moment......

Sure enough there was a old rusty "nut" that had gotten wedged between the brace and the motor.. The other dealership told him to look for a rock!!

Hope thats what your problem is!!

The mechanic did tell me that he should have suspected something because the front of the motor did not appear to be putting any pressure on the bushing.
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Re: Excessive 110 vibrations at 2500 rpm
« Reply #8 on: January 07, 2009, 04:22:05 AM »
Quote from: Never Better on January 06, 2009, 12:23:37 PM
Hi Ya'll,

I recently bought an 08' SERK with 6,000 miles. It has RH True Duals and a PC. Runs great with the exception .... between 2000 and 3000 rpm, the vibration is numbing. The vibration maxs out at 2500 rpm. You can feel it at all speeds or on just on the stand in neutral. I took out the PC to see if that was a cause and the vibration is still there. Does anyone have the same experience? If so, did you find a remedy?

Never Better
:cowboy: Welcome from Texas :cowboy:                                                     :welcome_005:  :cherry:

Go to New Member Section tell us about your self and post some pictures of your bike
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Never Better

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Re: Excessive 110 vibrations at 2500 rpm ... see update
« Reply #9 on: January 13, 2009, 02:11:38 PM »
Quote from: Never Better on January 06, 2009, 12:23:37 PM
Hi Ya'll,

I recently bought an 08' SERK with 6,000 miles. It has RH True Duals and a PC. Runs great with the exception .... between 2000 and 3000 rpm, the vibration is numbing. The vibration maxs out at 2500 rpm. You can feel it at all speeds or on just on the stand in neutral. I took out the PC to see if that was a cause and the vibration is still there. Does anyone have the same experience? If so, did you find a remedy?

Never Better

UPDATE: 1/13/08 .... took the bike to local HD dealer for a check out ride. The Master Tech confirmed a "buzz" at the 2500 to 3000 rpm range and shrugged it off as normal. Maybe normal for a bike that's got more than 6,000 miles on it and a "buzz" turns into a hand and feet numbing vibration when riding at highway speeds for any length of time (more than 5 minutes). HD has said that in order to really evaluate the vibration, I need to restore the exhaust system to it's factory set up. They said after market exhaust systems can cause vibrations.
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timo482

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Re: Excessive 110 vibrations at 2500 rpm ... see update
« Reply #10 on: January 13, 2009, 02:28:52 PM »
you are getting bit by the "tamper and we can blow you off" bug. :(

bummer

to

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GregKhougaz

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Re: Excessive 110 vibrations at 2500 rpm ... see update
« Reply #11 on: January 16, 2009, 12:32:35 PM »
Never Better, if you have changed the A/C, check that you have the correct breather bolts, or that the breather holes are not clogged.  Either would cause the vibration you describe (and maybe some oil leak). 
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Never Better

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Re: Excessive 110 vibrations at 2500 rpm ... see update
« Reply #12 on: January 18, 2009, 05:07:29 AM »
that's very interesting .... I did have some oil residue in the breather. The bolts were all tight and the filter cartridge was a little dirty. I cleaned the filter and the vibration still persist. did I miss something? can anyone add to Greg's idea?

Never Better
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bikerboy53

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Re: Excessive 110 vibrations at 2500 rpm ... see update
« Reply #13 on: January 19, 2009, 03:32:31 PM »
Sorry I can't add to Greg's idea, but I will add to Hoist's comment. My bike had similar symptoms to what you describe -right down to the dealership blowing it off. If it's still under warranty I would recommend that you consider paying them to check the crankshaft runout -and make sure they check it on both ends too. I made that request and they found that the crank had excessive runout. The dealer ended up replacing the crankshaft under warranty -including the cost of checking the runout. When they did the runout check one end of the crank was within specs, and the other end was outside the allowable limits.

Be prepared to foot the bill for the runout check though...  :oops: Just in case it's not a bad crank. IMHO it was worth it to me to have the runout checked so I could eliminate that possibility. I don't know if there are still crankshaft related issues out there on the new '09 bikes, but some of the earlier bikes had problems.  :(
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Re: Excessive 110 vibrations at 2500 rpm ... see update
« Reply #14 on: January 20, 2009, 08:41:07 AM »
TT324? describes the crank run out check in response to excessive vibration.  If normal troubleshooting leads to a possible bad crank, then part of the troubleshooting is to check runout.  Why would the customer have to pay for the troubleshooting prescribed by HDs Tech Tip?  I offered to pay for the crank runout check before second head gasket was done because I knew I had an early motor and the chances were good the crank was bad.  Since the extra labor to check the run out once the top end was off it was an offer I made willingly.  HD customer service stepped up and agreed that it made sense to check runout while it was apart.  As it was, the runout was .020 and a new motor was ordered.
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