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Hubs, Gearboxes, Sprockets and Chains

Can't find 'em, grind em - hubs and transmissions, problems and modifications to make you run smooth and trouble free

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  1. Sticky Threads
  2. MaxPower
    Sticky

    List of motorized bicycle gearboxes

    MaxPower, Nov 26, 2009 ... 2 3
    Replies:
    50
    Views:
    57,513
    CycleRyder
    CycleRyder
    Jun 24, 2017
  3. Greg58
    Sticky

    Chain size chart

    Greg58, Jul 27, 2011 ... 2 3 4
    Replies:
    70
    Views:
    52,807
    TheNecromancer13
    TheNecromancer13
    Oct 31, 2015
  4. Norman
    Sticky

    motorized bicycle 44 to 36 tooth sprocket swap

    Norman, Feb 24, 2008 ... 5 6 7
    Replies:
    124
    Views:
    71,473
    DRBS
    DRBS
    Jun 22, 2014
  5. Normal Threads
  6. el Diablo Guapo

    Rear sprocket, rag joint, broken spokes and destroyed hub

    el Diablo Guapo, Oct 16, 2017 at 9:38 PM
    Replies:
    0
    Views:
    16
    el Diablo Guapo
    el Diablo Guapo
    Oct 16, 2017 at 9:38 PM
  8. clay830

    Best rear sprocket size

    clay830, Jan 30, 2017 ... 3 4 5
    Replies:
    93
    Views:
    5,518
    TheNecromancer13
    TheNecromancer13
    Oct 14, 2017 at 1:44 PM
  9. Toaster001

    Looking for replacement sprocket for HuaSheng 49cc transmission

    Toaster001, Oct 13, 2017 at 4:02 PM
    Replies:
    1
    Views:
    36
    MotorBicycleRacing
    MotorBicycleRacing
    Oct 13, 2017 at 4:08 PM
  10. el Diablo Guapo

    Clutch shaft install - report & thoughts

    el Diablo Guapo, Oct 8, 2017
    Replies:
    2
    Views:
    57
    el Diablo Guapo
    el Diablo Guapo
    Oct 8, 2017
  11. Cylon

    Sprocket adapters....

    Cylon, Sep 21, 2016
    Replies:
    19
    Views:
    1,300
    Hoofbeats64
    Hoofbeats64
    Oct 6, 2017
  12. el Diablo Guapo

    my clutch shaft - the definition of fubar

    el Diablo Guapo, Oct 4, 2017
    Replies:
    4
    Views:
    82
    xseler
    xseler
    Oct 6, 2017
  13. bob1352

    What are the dimensions of the clutch bucking bar?

    bob1352, Oct 4, 2017
    Replies:
    2
    Views:
    51
    crassius
    crassius
    Oct 5, 2017
  14. newbybikelover

    sprockets and speeds?

    newbybikelover, Apr 17, 2012
    Replies:
    19
    Views:
    10,939
    Chaz
    Chaz
    Sep 15, 2017
  15. 5-7HEAVEN

    New 5:1 Self-Contained Gearbox

    5-7HEAVEN, Aug 25, 2017
    Replies:
    6
    Views:
    201
    5-7HEAVEN
    5-7HEAVEN
    Sep 6, 2017
  17. ru14real

    Whats wrong with this picture

    ru14real, Aug 23, 2017
    Replies:
    0
    Views:
    102
    ru14real
    ru14real
    Aug 23, 2017
  18. allen standley

    Saggy Chain Cause

    allen standley, Aug 20, 2017
    Replies:
    3
    Views:
    101
    redman
    redman
    Aug 21, 2017
  19. BiotinX

    shorten a 415 chain?!!?!?

    BiotinX, May 27, 2017
    Replies:
    5
    Views:
    347
    el Diablo Guapo
    el Diablo Guapo
    Aug 17, 2017
  20. jmden

    Smaller 2 stroke engine drive sprocket?

    jmden, Aug 3, 2017
    Replies:
    7
    Views:
    198
    curtisfox
    curtisfox
    Aug 17, 2017
  21. Minivan

    Anyone tried attaching a "real" clutch to a 2 stroke engine?

    Minivan, Aug 16, 2017
    Replies:
    0
    Views:
    62
    Minivan
    Minivan
    Aug 16, 2017
  22. el Diablo Guapo

    Anyone tried a rolling ring tensioner? It is working so far...

    el Diablo Guapo, Aug 15, 2017
    Replies:
    1
    Views:
    90
    xseler
    xseler
    Aug 15, 2017
  23. Nehmo

    Ideal rear sprocket size? 44? 36?...

    Nehmo, Aug 4, 2017
    Replies:
    7
    Views:
    443
    Nehmo
    Nehmo
    Aug 6, 2017
  24. mr42ndstblvd

    anybody have info on the new chinese hubadapters on the market??

    mr42ndstblvd, Jun 20, 2017
    Replies:
    7
    Views:
    791
    Nanfoe
    Nanfoe
    Aug 1, 2017
  26. RoonHP

    My woodruff key will NOT stay in place... please help

    RoonHP, Jul 19, 2017
    Replies:
    6
    Views:
    248
    KCvale
    KCvale
    Jul 20, 2017
  27. TheSignGuy

    Bouncing around solution found for gearing?

    TheSignGuy, Jul 15, 2017
    Replies:
    9
    Views:
    242
    TheSignGuy
    TheSignGuy
    Jul 16, 2017
  28. CRP

    How centered does the rear sprocket have to be?

    CRP, Jun 22, 2017 ... 2
    Replies:
    29
    Views:
    656
    CRP
    CRP
    Jul 3, 2017
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