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3rd December 2010
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Chief Know It All
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Join Date: Dec 2009
Posts: 430 Sportster/Buell Model: xl1200c Sportster/Buell Year: 2005
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Vibration at high RPM
I have a 2005 XL1200C with 34,000 miles. It has developed a vibration at high RPM in any gear. When road speed matches RPM, there is no vibration. At 75mph in 5th it feels like it's lugging. When I accelerate I feel the vibration. Checked drive belt, primary adjustment, wheel bearings all ok.
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2005 XL1200C,SE SP exhaust,SE A/C
[IMG]http://i976.photobucket.com/albums/ae246/grampadac/DCP_0702.jpg[/IMG]
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3rd December 2010
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Biker
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Join Date: Mar 2009
Location: PK WEST OZ
Posts: 75 Sportster/Buell Model: roadster Sportster/Buell Year: 2006
Reputation: 10
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have ya checked ya engine mount bolts???  |
3rd December 2010
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Bike Builder
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Join Date: Nov 2004
Location: jupiter fl
Posts: 1,821 Sportster/Buell Model: 1200C Sportster/Buell Year: 04
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Also check steering neck bearings and tire pressure.
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04 76"C NRHS #2 CP 10.5:1 .575 cams TP rockers TC88A HSR-42 S&Sac LSR 2-1 Can you say--- screamer?
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3rd December 2010
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Master Custom Bike Builder
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Join Date: Aug 2009
Location: Dallas, TX
Posts: 3,331 Sportster/Buell Model: XL1250 Sportster/Buell Year: '02
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Quote:
Originally Posted by grampadac
I have a 2005 XL1200C... It has developed a vibration at high RPM in any gear...
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Welcome to the world of Harley 
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Well of course, everything looks bad if you remember it.
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3rd December 2010
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Chief Know It All
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Join Date: Dec 2009
Posts: 430 Sportster/Buell Model: xl1200c Sportster/Buell Year: 2005
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Have checked mount bolts and tire pressure. Will check neck bearings.
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3rd December 2010
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XL FORUM TEAM MEMBER
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Join Date: May 2010
Posts: 1,431 Sportster/Buell Model: White Hot Denim XR1200X Sportster/Buell Year: 2011
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Also check the riser and handlebar bolts and the wheel axle bolts
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3rd December 2010
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Ride That F'N Sportster!!
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Join Date: Nov 2004
Location: Carolina Coast
Posts: 12,046 Sportster/Buell Model: Highly modified 1200 c Sportster/Buell Year: 01 Other Motorcycle Model: H-D Street glide Other Motorcycle Year: 2013
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How many miles are on your current tires..mainly the front one??
Did you check spoke tightness??
Swinger tightness?
bad wheel bearings?
anything already mentioned above will contribute to a vibration?
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RTFS Ride That F'N Sportster!!
Sportsters are like prison shanks, small..fast..DEADLY!
When life throws a curve...lean into it and open the throttle.
The wheels beneath me, the road ahead of me..These are the reason's why I ride!!
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3rd December 2010
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JESTER Mafia-Hooligan Div
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Join Date: Sep 2005
Location: West Central Indiana
Posts: 9,441 Sportster/Buell Model: 1200 R Sportster/Buell Year: 2005
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Quote:
Originally Posted by grampadac
I have a 2005 XL1200C with 34,000 miles. It has developed a vibration at high RPM in any gear. When road speed matches RPM, there is no vibration. At 75mph in 5th it feels like it's lugging. When I accelerate I feel the vibration. Checked drive belt, primary adjustment, wheel bearings all ok.
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That's the statement right there that concerns me! 75 in 5th shouldn't be "lugging". Stock gearing? Have you done anything tuning wise lately?
How about your exhaust? Everything tight?
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Stuff: YES
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3rd December 2010
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Ride That F'N Sportster!!
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Join Date: Nov 2004
Location: Carolina Coast
Posts: 12,046 Sportster/Buell Model: Highly modified 1200 c Sportster/Buell Year: 01 Other Motorcycle Model: H-D Street glide Other Motorcycle Year: 2013
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75 mph you should be able to whack the throttle watching the bike take off without any hesitation??
Atleast in my riding!!
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3rd December 2010
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Biker
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Join Date: Nov 2010
Location: not so fast !
Posts: 7 Sportster/Buell Model: sportster Sportster/Buell Year: 1991
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vibration
I kinda like the vibration  LOL |
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