Welcome to Our Community

Wanting to join the rest of our members? Feel free to sign up today.

Sign Up

Belt slipping

Discussion in 'Vintage Big Dogs' started by Rick Utley, Jun 5, 2017.

  1. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    Good evening, I have an 04 Big Dog Chopper 117cu in. When I really twist the throttle hard especially two up my belt slips on my rear sprocket has anyone else had this issue? Belt and pulley have some wear but not that bad. Belt is tightened to specs maybe a little more. Any suggestions? Thanks...


    Sent from my iPhone using Tapatalk
     
    chubs likes this.
  2. pknowles

    pknowles Getting better by the day...---... GURU
    Supporting Member

    Joined:
    Jul 10, 2010
    Messages:
    7,698
    Likes Received:
    6,726
    Trophy Points:
    113
    Location:
    virginia
    My Bike(s):
    , 2012 CVO Streetglide, 07k9 MAKIN IT MY OWN
    First Name:
    paul
    You need to really look at the wear on both parts. It shouldn't be slipping. That wears the hell out of the parts. Can you post a picture
     
    chubs, BWG56 and bigkelk9 like this.
  3. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    I certainly can and will when I get home and will greatly appreciate any help on this matter I can get really frustrated...


    Sent from my iPhone using Tapatalk
     
    chubs and bigkelk9 like this.
  4. bigkelk9

    bigkelk9 Well-Known Member
    Supporting Member

    Joined:
    Sep 7, 2015
    Messages:
    3,170
    Likes Received:
    5,647
    Trophy Points:
    113
    Location:
    Southeast Texas / Southern California
    My Bike(s):
    07 big dog k9
    First Name:
    Kel
    Something tells me ur pulley on one side or the other is wore (gear or pulley).. ur belt will be next.. I'd take it off and do a close inspection on them teeth
     
    Srodden, chubs and BadDawg Bill like this.
  5. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    Had actual mechanic look at it he said it had some wear but should not be slipping. Maybe I need
    To tighten up a little more...


    Sent from my iPhone using Tapatalk
     
    chubs likes this.
  6. BWG56

    BWG56 Guru

    Joined:
    Jul 29, 2008
    Messages:
    20,861
    Likes Received:
    36,625
    Trophy Points:
    113
    Location:
    USA
    My Bike(s):
    Big Dog, SpyderF3
    First Name:
    Ker
    When you say spec, how much deflection is it now?
     
    chubs likes this.
  7. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    Well when you twist the belt with some effort you can't quite twist it a 1/4 turn. I no know it all and trying to pretend to be but isn't it true the more weight the looser the belt gets and nine outta ten times I'm 2up approx 350 Lbs.


    Sent from my iPhone using Tapatalk
     
    chubs likes this.
  8. PROFLYER

    PROFLYER SWOLE

    Joined:
    Oct 8, 2007
    Messages:
    1,891
    Likes Received:
    906
    Trophy Points:
    113
    Location:
    Denver, CO
    My Bike(s):
    06 K9, 06 Mastiff (wife's)
    First Name:
    Sutton
    You sure it's the belt and not the clutch?
     
    chubs likes this.
  9. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    Mech just pulled clutch out and side it was ok throw out bearing was shot so replaced it


    Sent from my iPhone using Tapatalk
     
    chubs likes this.
  10. BWG56

    BWG56 Guru

    Joined:
    Jul 29, 2008
    Messages:
    20,861
    Likes Received:
    36,625
    Trophy Points:
    113
    Location:
    USA
    My Bike(s):
    Big Dog, SpyderF3
    First Name:
    Ker
    I can only get about 1/8 twist on my 07' however this is what the 07' manual states
    IMG_1510.JPG
     
    chubs and bdm7250 like this.
  11. pknowles

    pknowles Getting better by the day...---... GURU
    Supporting Member

    Joined:
    Jul 10, 2010
    Messages:
    7,698
    Likes Received:
    6,726
    Trophy Points:
    113
    Location:
    virginia
    My Bike(s):
    , 2012 CVO Streetglide, 07k9 MAKIN IT MY OWN
    First Name:
    paul
    They make a tension gauge to measure the deflection. I bought one a while back and it takes a bit getting used to it.
     
    chubs likes this.
  12. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    So tell me what is right at the point of being to tight without a gauge by twisting the belt. 1/8 ???


    Sent from my iPhone using Tapatalk
     
    chubs likes this.
  13. shansel88

    shansel88 Member

    Joined:
    Feb 27, 2016
    Messages:
    95
    Likes Received:
    122
    Trophy Points:
    33
    Location:
    Jacksonville FL
    My Bike(s):
    2004 Chopper
    First Name:
    Sam
    Ive gone through this very thing. Tighten the belt and be done wit it. I replace front pulley and rear and belt. In the end - nothing worked - under heavy acceleration the belt slipped. So I found the choices to be: lay off the throttle, tighten the hell out of the belt, or find a balance between the two.
     
    chubs likes this.
  14. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    Shansel88 that's what I am asking when you tightened the hell outta the belt did it stop slipping??!


    Sent from my iPhone using Tapatalk
     
    chubs likes this.
  15. BWG56

    BWG56 Guru

    Joined:
    Jul 29, 2008
    Messages:
    20,861
    Likes Received:
    36,625
    Trophy Points:
    113
    Location:
    USA
    My Bike(s):
    Big Dog, SpyderF3
    First Name:
    Ker
    That's what I would think, and it should be on the ground, not up on a jack cause the tension is different with the weight of the bike on the back tire. Assuming the pulley teeth are in good shape, some one on here had shown one not to long ago that the pulley teeth were sharp from wear

    Maybe you need a new belt if that's the original
     
    chubs likes this.
  16. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    Thank you


    Sent from my iPhone using Tapatalk
     
    chubs and BWG56 like this.
  17. pknowles

    pknowles Getting better by the day...---... GURU
    Supporting Member

    Joined:
    Jul 10, 2010
    Messages:
    7,698
    Likes Received:
    6,726
    Trophy Points:
    113
    Location:
    virginia
    My Bike(s):
    , 2012 CVO Streetglide, 07k9 MAKIN IT MY OWN
    First Name:
    paul
    I posted a picture of my wife's Heritage rear pulley that were worn in half and all the teeth on the belt were cut loose on the load side.
     
    chubs and BWG56 like this.
  18. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    Mines not nowhere near that bad but I am lost


    Sent from my iPhone using Tapatalk
     
    chubs likes this.
  19. PROFLYER

    PROFLYER SWOLE

    Joined:
    Oct 8, 2007
    Messages:
    1,891
    Likes Received:
    906
    Trophy Points:
    113
    Location:
    Denver, CO
    My Bike(s):
    06 K9, 06 Mastiff (wife's)
    First Name:
    Sutton
    Didn't answer my specific question: are you SURE the belt is slipping and NOT the clutch?

    Lots of guys have had issues with the clutch slipping and 99% of the time it's because someone put synthetic fluid in the primary because everyone thinks if it's synthetic, it has to be better. That WILL make a clutch slip in these bikes. Plain old Harley primary oil is all you should use. NON synthetic.
     
    chubs and BadDawg Bill like this.
  20. Rick Utley

    Rick Utley Member

    Joined:
    Jun 28, 2016
    Messages:
    83
    Likes Received:
    60
    Trophy Points:
    18
    Location:
    Houston, Tx.
    My Bike(s):
    2004 Big Dog Chopper
    First Name:
    Rick
    No sir I am not 100% sure I do how ever know it has plain ole Harley primary oil in it I cannot swear it has never had synthetic in it.


    Sent from my iPhone using Tapatalk
     
    chubs likes this.

Share This Page