2008 Fatbob "issues"

  • Chrisso63
    Chrisso63
    5 days ago
    My young blokes 2008 Fatbob has been parked up approx 6 months has always had starting issues.. recently replaced starter clutch in starter and haven't been able to get her running.. 
    Some background on the bike, it's had an upgrade big bore 103 top end done, unsure of cams it's running it has a set of manual decomp buttons fitted but other than that he didn't get much info when he bought it..
    I've cleaned up all the earth's and am currently going over her trouble shooting..  It cranks over but kills the power ie: drains battery pretty quick.
    I have fitted another (good battery) 
    Is there anything else I should be looking for and checking?
    Thanks blokes in advance appreciate any help I can get!
  • brucefxdl
    brucefxdl
    5 days ago
    Quoting Chrisso63 on 14 Jan 2022 03:02 AM

    My young blokes 2008 Fatbob has been parked up approx 6 months has always had starting issues.. recently replaced starter clutch in starter and haven't been able to get her running.. 

    Some background on the bike, it's had an upgrade big bore 103 top end done, unsure of cams it's running it has a set of manual decomp buttons fitted but other than that he didn't get much info when he bought it..
    I've cleaned up all the earth's and am currently going over her trouble shooting..  It cranks over but kills the power ie: drains battery pretty quick.
    I have fitted another (good battery) 
    Is there anything else I should be looking for and checking?
    Thanks blokes in advance appreciate any help I can get!

    starter motor condition . ie armature bush's,are they worm ,allowing the motor to pole and draw excessive current,will be similar to a battery" loosing charge" while cranking ?

  • Chrisso63
    Chrisso63
    5 days ago
    Cheers Bruce.. do you mean the bushes in the solenoid..
    It definitely feels like that like it drains real quick while cranking
  • brucefxdl
    brucefxdl
    5 days ago
    Quoting Chrisso63 on 14 Jan 2022 03:31 AMedited: 14 Jan 2022 03:40 AM

    Cheers Bruce.. do you mean the bushes in the solenoid..

    It definitely feels like that like it drains real quick while cranking

    not in the solenoid [ no bushes in there ] ..the bush's/bearings in the starter body that support the armature shaft.
  • Chrisso63
    Chrisso63
    5 days ago
    Ok..gotcha so what am I looking for exactly there? Obvious wear?
    Stiff bearings hard to turn or their fitment
  • brucefxdl
    brucefxdl
    5 days ago
    Quoting Chrisso63 on 14 Jan 2022 05:13 AMedited: 14 Jan 2022 05:14 AM

    Ok..gotcha so what am I looking for exactly there? Obvious wear?

    Stiff bearings hard to turn or their fitment

    ok,i'll take a step back,the armature is supported by roller bearings [ not bushes] so i'd be surpised if they have given out [ unless it has done an extreme amount of cranking over time ]but if they have failed[ one or both] there would be radial [ side ] movement of the armature,the starter wil need to be dismantled to check this........but before going there,i would suggest carrying out a starter amp draw test and the best/quickest way to do this is with an induction amp meter,no dismantling to do....just access to the starter positve lead and crank for a short time with the plug leads disconnected. for an '07 dyna the draw should be 180-200 amps while cranking, i'd imagine an '08 would be the same.....but before all that make sure all lead connections are clean and secure,positve and negative.i may be way off the mark,but time will tell i suppose.good luck in the search.another alternative is try a substitute starter...the one that every one has in their back pocket...lol.

  • Chrisso63
    Chrisso63
    4 days ago
    Hahaha yeah just happen to have one in my sock drawer 😆
    Seriously though thanks for all your advice Bruce, very much appreciated! 
    These are the things that remind me why I prefer older more reliable and Far easier to repair bikes and cars pre putting a gazillion computer Gizmo's and fkn sensors an whatnot for Everything! 
  • brucefxdl
    brucefxdl
    4 days ago
    Quoting Chrisso63 on 15 Jan 2022 12:44 AM

    Hahaha yeah just happen to have one in my sock drawer 😆

    Seriously though thanks for all your advice Bruce, very much appreciated! 
    These are the things that remind me why I prefer older more reliable and Far easier to repair bikes and cars pre putting a gazillion computer Gizmo's and fkn sensors an whatnot for Everything! 

    i'm a JD tech and most days its the appropriate spanner in one hand and a lap top in the other......when i started on tractors [ grey fergies ] they only had 2 metres of wire... today its 50 metres or more,does ones head in at times. old is good.
  • B0nes
    B0nes
    4 days ago
    Quoting Chrisso63 on 15 Jan 2022 12:44 AM

    Hahaha yeah just happen to have one in my sock drawer 😆

    Seriously though thanks for all your advice Bruce, very much appreciated! 
    These are the things that remind me why I prefer older more reliable and Far easier to repair bikes and cars pre putting a gazillion computer Gizmo's and fkn sensors an whatnot for Everything! 

    Quoting brucefxdl on 15 Jan 2022 01:48 AM

    i'm a JD tech and most days its the appropriate spanner in one hand and a lap top in the other......when i started on tractors [ grey fergies ] they only had 2 metres of wire... today its 50 metres or more,does ones head in at times. old is good.

    Mate works on Learjets. Nearly 9km of wiring and around $18,000 just for the harness alone. That's alot of tubing just to carry around some smoke.
  • brucefxdl
    brucefxdl
    4 days ago
    Quoting Chrisso63 on 15 Jan 2022 12:44 AM

    Hahaha yeah just happen to have one in my sock drawer 😆

    Seriously though thanks for all your advice Bruce, very much appreciated! 
    These are the things that remind me why I prefer older more reliable and Far easier to repair bikes and cars pre putting a gazillion computer Gizmo's and fkn sensors an whatnot for Everything! 

    Quoting brucefxdl on 15 Jan 2022 01:48 AM

    i'm a JD tech and most days its the appropriate spanner in one hand and a lap top in the other......when i started on tractors [ grey fergies ] they only had 2 metres of wire... today its 50 metres or more,does ones head in at times. old is good.

    Quoting B0nes on 15 Jan 2022 03:10 AM

    Mate works on Learjets. Nearly 9km of wiring and around $18,000 just for the harness alone. That's alot of tubing just to carry around some smoke.

    bugger that..i get lost just looking in the cab.
    ....and the secret is to keep the smoke inside the wires...lol
  • tussuck
    tussuck
    4 days ago
    Gotta LOVE that MilSpec aircraft cabling though!  I run it on the FXR and its a dream to use.