Dreaded Dyna Vibration
Thread Starter
|
Tourer
Joined: Jan 2016
Posts: 433
Likes: 68
From: Cape Coral, FL
Dreaded Dyna Vibration
It seems my ride picked up the dreaded vibration. It rattle my boots on the pegs pretty good between 2200 and 2500 rpm. I'm guessing my mounts may need to be re torqued. I'd appreciate any insights you guys can offer. Thanks!
Popular Reply
Nov 5, 2017, 07:28 AM
Extreme HDF Member
Joined: Feb 2015
Posts: 10,907
Likes: 8,756
From: Galt's Gulch - MI
Fixed that for you
The OEM isolators are not exactly optimal. The front can fail easily due to poor vehicle/engine alignment, and oil contamination from oil filter removals will degrade the rubber isolator.
Are you experiencing any decel shuddering? First step is to inspect the isolators; if the front isolator is contacting the engine bracket that would explain your added vibrations. If your front is distorted or oil contaminated it should be replaced. HD did release a service bulletin on Dyna vibrations but their 'fix' is just a bandaid.
The only 'real' permanent fix is to consider the Predator, Sputhe, or TrueTrack engine mounts. Once installed, and the bike properly aligned you'd be quite surprised how civilized and well handling these bikes can be.
This is the service bulletin. Check out your front isolator and determine if it's starting to distort, from there we can offer up suggestions...
Extreme HDF Member
Joined: Feb 2015
Posts: 10,907
Likes: 8,756
From: Galt's Gulch - MI
Fixed that for you
The OEM isolators are not exactly optimal. The front can fail easily due to poor vehicle/engine alignment, and oil contamination from oil filter removals will degrade the rubber isolator.
Are you experiencing any decel shuddering? First step is to inspect the isolators; if the front isolator is contacting the engine bracket that would explain your added vibrations. If your front is distorted or oil contaminated it should be replaced. HD did release a service bulletin on Dyna vibrations but their 'fix' is just a bandaid.
The only 'real' permanent fix is to consider the Predator, Sputhe, or TrueTrack engine mounts. Once installed, and the bike properly aligned you'd be quite surprised how civilized and well handling these bikes can be.
This is the service bulletin. Check out your front isolator and determine if it's starting to distort, from there we can offer up suggestions...
Seasoned HDF Member
Joined: Jul 2008
Posts: 9,278
Likes: 1,138
From: southeast PA
You can usually tell just by inspecting the front mount if it's good or not.
Extreme HDF Member
Joined: Dec 2007
Posts: 13,402
Likes: 941
From: Illinois
Went through the service bulletin list for vibration issues on my 15 Fat Bob which was so bad that I couldn't keep my right foot on the peg nor see in the mirrors at any speed. Did get the vibrations down some but still very bad.
Finally solved the issue. Traded for a smooth as silk 18 Fat Bob S. A Fat Bob is a Fat Bob no matter where the shocks are located or how many.
Finally solved the issue. Traded for a smooth as silk 18 Fat Bob S. A Fat Bob is a Fat Bob no matter where the shocks are located or how many.
Trending Topics
Extreme HDF Member
Joined: Feb 2015
Posts: 10,907
Likes: 8,756
From: Galt's Gulch - MI
Oh, you can pretend all you want; claim all those epic HD's in your garage, I know it's all nothing but bullshit.
You don't know the first thing whatsoever about a Dyna, or how to actually make one perform.
Go ahead and rock that '18; you'll jack it up as well...
You antique dipshit...
You don't know the first thing whatsoever about a Dyna, or how to actually make one perform.
Go ahead and rock that '18; you'll jack it up as well...
You antique dipshit...
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
The Best and Worst Harley-Davidson Moves of 2025
Verdad Gallardo
Road Captain
Joined: Oct 2014
Posts: 570
Likes: 45
From: Rocket City
Originally Posted by TinCupChalice
Oh, you can pretend all you want; claim all those epic HD's in your garage, I know it's all nothing but bullshit.
You don't know the first thing whatsoever about a Dyna, or how to actually make one perform.
Go ahead and rock that '18; you'll jack it up as well...
You antique dipshit...
You don't know the first thing whatsoever about a Dyna, or how to actually make one perform.
Go ahead and rock that '18; you'll jack it up as well...
You antique dipshit...
