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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:
    57,530
    CycleRyder
    CycleRyder
    Jun 24, 2017
  3. Greg58
    Sticky

    Chain size chart

    Greg58, Jul 27, 2011 ... 2 3 4
    Replies:
    70
    Views:
    52,865
    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:
    71,511
    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:
    7
    Views:
    76
    crassius
    crassius
    Oct 18, 2017 at 8:05 PM
  8. R3333D

    sprocket for jack shaft

    R3333D, Oct 17, 2017 at 8:16 PM
    Replies:
    1
    Views:
    32
    Tony01
    Tony01
    Oct 18, 2017 at 3:14 AM
  9. Skarrd

    Where to get disc mount sprockets?

    Skarrd, Oct 17, 2017 at 4:52 PM
    Replies:
    0
    Views:
    19
    Skarrd
    Skarrd
    Oct 17, 2017 at 4:52 PM
  10. clay830

    Best rear sprocket size

    clay830, Jan 30, 2017 ... 3 4 5
    Replies:
    93
    Views:
    5,573
    TheNecromancer13
    TheNecromancer13
    Oct 14, 2017 at 1:44 PM
  11. Toaster001

    Looking for replacement sprocket for HuaSheng 49cc transmission

    Toaster001, Oct 13, 2017
    Replies:
    1
    Views:
    40
    MotorBicycleRacing
    MotorBicycleRacing
    Oct 13, 2017
  12. el Diablo Guapo

    Clutch shaft install - report & thoughts

    el Diablo Guapo, Oct 8, 2017
    Replies:
    2
    Views:
    61
    el Diablo Guapo
    el Diablo Guapo
    Oct 8, 2017
  13. Cylon

    Sprocket adapters....

    Cylon, Sep 21, 2016
    Replies:
    19
    Views:
    1,306
    Hoofbeats64
    Hoofbeats64
    Oct 6, 2017
  14. el Diablo Guapo

    my clutch shaft - the definition of fubar

    el Diablo Guapo, Oct 4, 2017
    Replies:
    4
    Views:
    85
    xseler
    xseler
    Oct 6, 2017
  15. bob1352

    What are the dimensions of the clutch bucking bar?

    bob1352, Oct 4, 2017
    Replies:
    2
    Views:
    55
    crassius
    crassius
    Oct 5, 2017
  17. newbybikelover

    sprockets and speeds?

    newbybikelover, Apr 17, 2012
    Replies:
    19
    Views:
    10,980
    Chaz
    Chaz
    Sep 15, 2017
  18. 5-7HEAVEN

    New 5:1 Self-Contained Gearbox

    5-7HEAVEN, Aug 25, 2017
    Replies:
    6
    Views:
    204
    5-7HEAVEN
    5-7HEAVEN
    Sep 6, 2017
  19. ru14real

    Whats wrong with this picture

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

    Saggy Chain Cause

    allen standley, Aug 20, 2017
    Replies:
    3
    Views:
    102
    redman
    redman
    Aug 21, 2017
  21. BiotinX

    shorten a 415 chain?!!?!?

    BiotinX, May 27, 2017
    Replies:
    5
    Views:
    349
    el Diablo Guapo
    el Diablo Guapo
    Aug 17, 2017
  22. jmden

    Smaller 2 stroke engine drive sprocket?

    jmden, Aug 3, 2017
    Replies:
    7
    Views:
    202
    curtisfox
    curtisfox
    Aug 17, 2017
  23. 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
  24. el Diablo Guapo

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

    el Diablo Guapo, Aug 15, 2017
    Replies:
    1
    Views:
    91
    xseler
    xseler
    Aug 15, 2017
  26. Nehmo

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

    Nehmo, Aug 4, 2017
    Replies:
    7
    Views:
    459
    Nehmo
    Nehmo
    Aug 6, 2017
  27. mr42ndstblvd

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

    mr42ndstblvd, Jun 20, 2017
    Replies:
    7
    Views:
    803
    Nanfoe
    Nanfoe
    Aug 1, 2017
  28. RoonHP

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

    RoonHP, Jul 19, 2017
    Replies:
    6
    Views:
    250
    KCvale
    KCvale
    Jul 20, 2017
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