Primary/Transmission/Driveline/Clutch Find answers to general powertrain, primary and transmission. Have clutch issues and need suggestions? Post them here.

issues with 06 dyna street bob trans

Thread Tools
 
Search this Thread
 
Old Mar 28, 2012 | 12:11 AM
  #1  
JRK5892's Avatar
JRK5892
Thread Starter
|
Banned
Joined: Mar 2007
Posts: 19,481
Likes: 25
From: Chicago suburbs (Elgin/Schaumburg)
Default issues with 06 dyna street bob trans

hey guys. so my bike is all set, figure i would take it around the block to check it out before dyno... first gear good, 2nd gear good, 3rd gear... not good

3rd gear under load "spings' sounds like a gear skipping... before i go back in and rear off the primary, inner, pulley, and start to get into the trans. anyone have any sugestions or ideas what may cause this?

i am running lucas 75/90 in the trans for the first time, usually i run sever gear amsoil.. i know this has min affect just wanted to make sure you knew. ANY ideas or things i can check to narrow this issue down? oooh ya 4th gear pulls no problem.
 
Reply
Old Mar 28, 2012 | 12:23 AM
  #2  
soft 02's Avatar
soft 02
Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
Default

Clutch slipping? SE plate?
 
Reply
Old Mar 28, 2012 | 09:12 AM
  #3  
JRK5892's Avatar
JRK5892
Thread Starter
|
Banned
Joined: Mar 2007
Posts: 19,481
Likes: 25
From: Chicago suburbs (Elgin/Schaumburg)
Default

has a baker in it... if it was the clutch it should slip though 1st and 2nd with higher load on it ya know... but i will double check the clutch on her as well
 
Reply
Old Mar 28, 2012 | 09:27 AM
  #4  
soft 02's Avatar
soft 02
Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
Default

When mine started to slip it would only happen in third getting on the freeway. Just throwing it out there. Might spur some good technical diagnosis or something to eliminate.
 
Reply
Old Mar 28, 2012 | 09:48 AM
  #5  
JRK5892's Avatar
JRK5892
Thread Starter
|
Banned
Joined: Mar 2007
Posts: 19,481
Likes: 25
From: Chicago suburbs (Elgin/Schaumburg)
Default

really! i did adjust the clutch... when your slipped was there a grinding sound at all? kind of like a gear skipping? also when you had this issue did you replace the plates in the clutch! oh man that would be SO much better than the trans! it does sound like it is coming from the primary over the trans ya know... also the clutch sat open with no fluid for a good 2 weeks i am wondering if my clutch plates got too dry
 
Reply
Old Mar 28, 2012 | 09:52 AM
  #6  
soft 02's Avatar
soft 02
Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
Default

It kinda sounded like the primary chain or trans gears were slapping or going load no load or acceleration deceleration. Hard to describe. Like if you jacked the rear up and grabbed the back tire in gear and rotated it back and forth in gear. How about primary chain adjuster? Auto?
 
Reply
Old Mar 28, 2012 | 10:18 AM
  #7  
JRK5892's Avatar
JRK5892
Thread Starter
|
Banned
Joined: Mar 2007
Posts: 19,481
Likes: 25
From: Chicago suburbs (Elgin/Schaumburg)
Default

ya that is alot like the sound i am getting! has an auto adjust on it... man i am starting to think i may be looking in the wrong spot! maybe it is the clutch slipping on me and not my trans...
 
Reply
Old Mar 28, 2012 | 10:22 AM
  #8  
soft 02's Avatar
soft 02
Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
Default

Originally Posted by JRK5892
ya that is alot like the sound i am getting! has an auto adjust on it... man i am starting to think i may be looking in the wrong spot! maybe it is the clutch slipping on me and not my trans...
Hope so. Let us know what you find out. Hate being left hanging when it gets figured out.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Mar 28, 2012 | 11:33 AM
  #9  
JRK5892's Avatar
JRK5892
Thread Starter
|
Banned
Joined: Mar 2007
Posts: 19,481
Likes: 25
From: Chicago suburbs (Elgin/Schaumburg)
Default

of course! one other thing... i wrote out a list of things i changed this winter wiht the mods... and the only thing trans/clutch i changed was the fluids... typically i run ATF in the primary, but this round i ran 20w50 lucas synthetic... i know on some of the clutch upgrade kits they say never to use a Synthetic and only use ATF or primary fluid... think the change in fluids could casue this? i know on tons of other bikes i have done fluid change on i usually use 20w50 no problem
 
Reply
Old Mar 28, 2012 | 11:40 AM
  #10  
soft 02's Avatar
soft 02
Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
Default

Originally Posted by JRK5892
of course! one other thing... i wrote out a list of things i changed this winter wiht the mods... and the only thing trans/clutch i changed was the fluids... typically i run ATF in the primary, but this round i ran 20w50 lucas synthetic... i know on some of the clutch upgrade kits they say never to use a Synthetic and only use ATF or primary fluid... think the change in fluids could casue this? i know on tons of other bikes i have done fluid change on i usually use 20w50 no problem
You brout up something interesting. The prob with some materials in friction plates is they are mfr for a certin type of fluid. So yea if it said no syn then it might cause a chatter! I deal with this in heavy eqiupment. Its the friction modifiers in the oil matching up with the material in the friction discs. Might want to put the recomended oil in there and zip tie the cluth lever to the grip to open up the plates and let it sit for a day or two. Just a thought.
 
Reply



All times are GMT -5. The time now is 09:29 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE