Any ideas about what may be causing this problem?
Thread Starter
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Tourer
Joined: Oct 2010
Posts: 465
Likes: 1
Any ideas about what may be causing this problem?
I'm about to take my 2011 FXDC in for the 1K service and I wanted some advice as what might be causing a problem that seems to have developed in the last 200-300 miles.
When I am downshifting while slowing down, a significant vibration sets in at certain RPM ranges. The same vibration is not present when accelerating and upshifting. It's definitely not tire related, and the bike is otherwise smooth. It often gets bad enough to blur my vision momentarily.
Any thoughts on this? Loose motor mount maybe?
Thanks.
When I am downshifting while slowing down, a significant vibration sets in at certain RPM ranges. The same vibration is not present when accelerating and upshifting. It's definitely not tire related, and the bike is otherwise smooth. It often gets bad enough to blur my vision momentarily.
Any thoughts on this? Loose motor mount maybe?
Thanks.
Seasoned HDF Member
Joined: Sep 2009
Posts: 25,307
Likes: 2,443
From: Eastern NE
Too bad Dyna's don't have RPM gauge - would be nice to know where you're hitting the stift points & when this vibration's kicking in...could be mount, could be loose bolts. Do a once over on frame & make sure you're not missing anything mounting motor, pegs, bars, or tires to bike.
Thread Starter
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Tourer
Joined: Oct 2010
Posts: 465
Likes: 1
I'm about to take my 2011 FXDC in for the 1K service and I wanted some advice as what might be causing a problem that seems to have developed in the last 200-300 miles.
When I am downshifting while slowing down, a significant vibration sets in at certain RPM ranges. The same vibration is not present when accelerating and upshifting. It's definitely not tire related, and the bike is otherwise smooth. It often gets bad enough to blur my vision momentarily.
Any thoughts on this? Loose motor mount maybe?
Thanks.
When I am downshifting while slowing down, a significant vibration sets in at certain RPM ranges. The same vibration is not present when accelerating and upshifting. It's definitely not tire related, and the bike is otherwise smooth. It often gets bad enough to blur my vision momentarily.
Any thoughts on this? Loose motor mount maybe?
Thanks.
DUDE! It's the rust on the tires!
Only 1K miles on a 2011?? What's wrong with you?
Allright, carry on...
Outstanding HDF Member
Joined: Aug 2011
Posts: 2,325
Likes: 7
From: SE Illinois
Too bad Dyna's don't have RPM gauge - would be nice to know where you're hitting the stift points & when this vibration's kicking in...could be mount, could be loose bolts. Do a once over on frame & make sure you're not missing anything mounting motor, pegs, bars, or tires to bike.
Do you notice the vibration when downshifting from each gear or just certain shifts?
Thread Starter
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Tourer
Joined: Oct 2010
Posts: 465
Likes: 1
I believe it is primarily on the 4-3 and 3-2 downshifts.
Road Master
Joined: Nov 2010
Posts: 1,115
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From: Bay Area, NorCal
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Ultimate HDF Member
Joined: Jul 2011
Posts: 5,477
Likes: 5
From: New Braunfels, Texas
First thing I would have them do, which is required at the 1K service, is to have the steering bearings adjusted. There has been a lot of new dyna's where the bearings loosened up. My dealer said it wasn't a part of the 1K service until I showed them that it was. I brought in my owners manuel and showed them. Another common problem on your bike is the front, bottom motor mounts. Some have had to have them shaved as they were rubbing against the frame and causing vibration.
It's under warranty, so make them figure it out. When you go to pick it up test ride it and if it isn't right put it right back in the shop.
It's under warranty, so make them figure it out. When you go to pick it up test ride it and if it isn't right put it right back in the shop.
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Road Captain
Joined: Jan 2012
Posts: 517
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From: Cleveland
Too bad Dyna's don't have RPM gauge - would be nice to know where you're hitting the stift points & when this vibration's kicking in...could be mount, could be loose bolts. Do a once over on frame & make sure you're not missing anything mounting motor, pegs, bars, or tires to bike.
