Softail Models Standard, Custom, Night Train, Deuce, Springer, Heritage, Fatboy, Deluxe, Rocker and Cross Bones.
Sponsored by:
Sponsored by:

Fat Boy Rattle

Thread Tools
 
Search this Thread
 
Old Dec 12, 2017 | 07:44 PM
  #1  
LCullman's Avatar
LCullman
Thread Starter
|
Stage I
Joined: Aug 2017
Posts: 1
Likes: 0
From: So Cal
Default Fat Boy Rattle

I just got back from the dealer. I have a 2018 Fat Boy, 360 miles. I love it. But I noticed a rattling sound between 2500 and 3000 RPM and could not find it. It was coming from the front of the bike and colleagues and friends had more opinions than I could use. So I simply took it to the dealer. They located the problem after a short test ride in the headlamp assembly. While I like to look of the headlight assembly I pegged it a a potential problem over the long haul and it no doubt will be. While they easily fixed it (missing grommet) this may be a short time look for the Fat Boy. So if your M8 2018 Fat Boy rattles at the aforementioned RPM ranges, put you ears near he head lamp assembly and hit the throttle (standing next to it, not while riding and no...its probably not the timing chain, lifters, rocker arms, etc. and the engine is not about to explode).
 

Last edited by LCullman; Dec 12, 2017 at 07:47 PM.
Reply
Old Dec 12, 2017 | 07:55 PM
  #2  
bbissell's Avatar
bbissell
Road Master
Joined: Jul 2008
Posts: 851
Likes: 129
From: AZ
Default

I had a rattle in the same rpm range it was the nacelle. We put a small gasket material in there and all is quiet now!
 
Reply
Old Dec 12, 2017 | 08:17 PM
  #3  
BigRed117's Avatar
BigRed117
Outstanding HDF Member
Joined: Dec 2017
Posts: 2,493
Likes: 1,051
From: Atlanta
Default

I had a rattle....well more like a rumble but it was coming from the rear of the bike!
 
Reply
Old Dec 13, 2017 | 08:53 AM
  #4  
BigRed117's Avatar
BigRed117
Outstanding HDF Member
Joined: Dec 2017
Posts: 2,493
Likes: 1,051
From: Atlanta
Default

Originally Posted by BigRed117
I had a rattle....well more like a rumble but it was coming from the rear of the bike!
Sorry.....could not help myself. Had a new truck that rattled in bed at low speeds. Once dealership found it they found a screw driver between bed and fender well. ***** happens!
 
Reply
Old Dec 13, 2017 | 10:15 AM
  #5  
budlight2256's Avatar
budlight2256
Intermediate
Joined: Nov 2017
Posts: 33
Likes: 8
From: NC
Default

I noticed a rattle on mine, thanks to no exhaust lol. It was right at about 2100 RPM. It was the gas cap. Just hit a sweet spot. I think it turned in a few times and it was gone.
 
Reply
Old Dec 13, 2017 | 02:20 PM
  #6  
zrdstr3's Avatar
zrdstr3
Intermediate
Joined: Oct 2017
Posts: 32
Likes: 13
From: Kissimmee, Florida
Default

My 18 Fat Boy 107 has the same rattle in the headlamp nacelle, since I had exhaust installed it is not as loud. I will have the dealer check it next week during 1000 mile service.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Zedder
Want To Buy Motorcycles/Parts/Accessories
0
Jul 11, 2015 11:24 AM
brutalbrad
General Harley Davidson Chat
52
Jan 1, 2013 05:30 PM
KYFATBOB
Softail Models
11
Feb 23, 2010 09:57 PM
funkinater
General Harley Davidson Chat
13
Feb 10, 2010 11:50 AM




All times are GMT -5. The time now is 06:28 PM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE