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Dreaded starter bang

Discussion in 'Transmission / Drive' started by Olde Man, Jun 21, 2016.

  1. Coolbreezin

    Coolbreezin Active Member

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    I rebuilt the mechanical side of it but had my friend do the electrical side. The jackshaft isnt hard to replace at all and only requires standard hand tools. You can get the jackshaft from a car starter or alternator shop. I had them rebuild mine a couple times and I was able to get the jackshaft number and ordered my own.
     
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  2. heybaylor

    heybaylor Active Member

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    five bikes, can find neutral on all except bigdog. when running.
    the throw from first to second is too short for my old aged foot.
    not a problem , I always find neutral just before coming to a stop.
    I know it is because of the clutch dragging a little but not worth the time to try to fix it
     
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  3. BadDawg Bill

    BadDawg Bill Well-Known Member

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    When you try to put the bike into neutral you go from a gear into neutral so you would have the clutch pulled in so how could it be dragging? ? I don't understand what you mean.... I can get neutral right before stopping but once stopped it's all over.
     
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  4. BWG56

    BWG56 Guru

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    I think what he means is, when sitting in first gear with the clutch pulled in, he can feel it dragging or wanting to move forward.
    Spec calls for touching the throw out bearing and backing off 1/4 turn, I'm more at 1/16-1/8 turn back. But I'm running the 12 clutch disc with the soft pull ball n ramp which should have the 9 disc in it, its a little more touchy.
     
    #24 BWG56, Sep 1, 2016
    Last edited: Sep 1, 2016
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  5. heybaylor

    heybaylor Active Member

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    when rolling the bike does not need a clutch to shift gears, just needs a little slack in the drive train.
    when stopped a slightly dragging clutch ( pressure and drive plates rubbing a little) will not allow any "slack"
    then it takes more pressure to go from gear to gear ( move theshifter dogs)
    the additional pressure results in bypassing the neutral detent on the shift drum..
    that is why you cannot find neutral when you are completely stopped.
     
    #25 heybaylor, Sep 1, 2016
    Last edited: Sep 1, 2016
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  6. BadDawg Bill

    BadDawg Bill Well-Known Member

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    That makes sense but both my clutches are adjusted just fine with no drag. With My RoadStar I can get neutral no matter what like clock work. Had the same issue with my Fatboy and custom built. I'd really like to find a solution.
     
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  7. Th3InfamousI

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    Well ....I just pulled my starter since I'm pulling my transmission this is my second starter this year only about 2.5K mikes on this rebuild...

    Gear teeth are mangled and the case is cracked.

    I'm guessing this is because of my starter ring gear. I'm replacing everything this time around, starter and the ring gear and I'll have to rebuild this already rebuilt starter haha.

    [​IMG][​IMG][​IMG]
    [​IMG]

    Sent from my 831C using Tapatalk
     
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  8. heybaylor

    heybaylor Active Member

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    I'm no expert , but I think the main issue is the "short throw linkage" just a "little movement between 1st ,and 2nd.
    my fatboy shifts just fine from 1st to n while stopped.

    just checked , my sporty is approx. one inch of movement from pawl neutral to gear neutral
    fatboy about 3/4 inch, Bigdog about 1/2 inch.
    maybe change the shifter lever linkage connection a little closer to the shifter pivot
    or a longer shift arm on the tranny ??
    I will just live with it
     
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  9. BWG56

    BWG56 Guru

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    Ouch, I busted a starter also years ago and replaced it and still had the starter bang, I then replaced the starter ring and clutch basket at the same time and haven't had a problem since, My starter ring also looked like the one you had.
     
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  10. Th3InfamousI

    Supporting Member

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    Well this is #2 within a year first one case broke now this has case and starter gear broke.

    I'm hoping third time is the charm along with the slightly used in great shape starter gear i got

    [​IMG]


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    #30 Th3InfamousI, Sep 1, 2016
    Last edited: Sep 1, 2016
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  11. badyellowvette

    badyellowvette Active Member

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    Will do, on the other hand I never have trouble finding neutral, stopped or running.
     
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  12. BadDawg Bill

    BadDawg Bill Well-Known Member

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    You might be on to something. that's what I was thinking too. Too tight and it might push it too hard and past neutral. I'll check it out.
    Thanks...
     
    #32 BadDawg Bill, Sep 2, 2016
    Last edited: Sep 2, 2016
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  13. Th3InfamousI

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    One was a little loose. I'll have to keep y eye on it next time and check it periodically.

    Sent from my 831C using Tapatalk
     
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  14. BWG56

    BWG56 Guru

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    As an Engineer wannabe, the bolts have nothing to do with the alignment, the nose of the starter with the o-ring on is the major alignment and to keep it from twisting with the torque, the dowel pin above the rear lower bolt takes the torque off the bolts. The aluminum casting nose piece should be billet. However, cost vs reliability, choose your poison.
    I added star washers to my bolts.
     
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  15. BWG56

    BWG56 Guru

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    And the starter ring gear if it gets chewed up, ax :oldlaugh: Eric. And I've been down this road, even after the 3rd starter it was banging:oldbang::oldrant::oldlaugh:
     
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  16. Th3InfamousI

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    Seems to be alot of banging going on here ...

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  17. BWG56

    BWG56 Guru

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    Good thing we ain't talkin about tank bungs also
     
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  18. Th3InfamousI

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    Bungs, banging and your dirty hole

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  19. BWG56

    BWG56 Guru

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    :panic::panic::oldnono::oldnono::oldlaugh:
     
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  20. badyellowvette

    badyellowvette Active Member

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    I did check my starter bolts and got a quarter turn out of them. I have to check the torque on them. Don't think they were that loose to cause the bang. Never happened today though.
     
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