49cc Huasheng clutch issues

Discussion in '4-Stroke Engines' started by txcnguy, May 25, 2016.

  1. txcnguy

    txcnguy New Member

    Does anyone know where to get a proper clutch for these 49cc engines for motorized bike duty? Seems like the springs are too stiff and need too many revs to get any action, and that means burning clutch pads all the time.
    Need to find a good supplier of weaker springs so the clutch locks up at lower rpm. I broke one spring and it actually was great, the clutch locked and the acceleration was awesome but it was a little tricky to stop.
    The heavier clutches work better, the light aluminium ones just toss them in the trash they are useless.
    Someone said the 2 spring clutches will work better, anyone tried them?
    I believe the stock clutches are for generators or non-cyclic loads, so not ready a good experience for the motorized biker.
    Any one out there have an alternate idea?
    Dan in Dubai
     

  2. skyash

    skyash Active Member

    I got a pocket bike and transfer box clutch all fits a 49cc 4 stroke my 4 stroke has stock pads and if I have to pedal the bike to help it get going then there is to much lode on it and it will burn the pads away quick. So I got a bigger back sprocket. I have seen the 2 pad ones and thay are ment to be hi performance so I think the springs are harder. I got a red colour 3 pad pocket bike clutch and it got the same holding the middle as the 4 stroke bur it's got a key on the shaft my 4 stroke dose not but it fits just fine the red pads seem better long lasting more grip but thy got hard springs so take them off and put the soft stock one on it now my bike rips out my hands. You can get everything on eBay just look under pocket bike clutch the pocket bike transfer box is $10 but the same 4 stroke one is $80 only difference is the sprockets on them one for pocket bike chain and one for 4 stroke chain
     
  3. skyash

    skyash Active Member

    You can just buy the springs soft medium and hand on e bay
     
  4. skyash

    skyash Active Member

    Pocket bike clutch on 4 stroke.
     

    Attached Files:

  5. skyash

    skyash Active Member

    This transfer box should not be used with 26 24 Inc wheels it is to hard on the clutch to take off. It comes with cheper kits
     
  6. txcnguy

    txcnguy New Member

    Last edited: May 25, 2016
  7. skyash

    skyash Active Member

    its off a pocket bike .on ebay 4 stock clutch s for $40 thay got soft ones thay say its better to have hard ones the more revs the better it just has to grip i have been testing by cutting lines in the bell housing like slots on a disk brake but havent rode it yet and it might eat the pads faster got to try
     

    Attached Files:

  8. skyash

    skyash Active Member

    even better 3 clutchs sor $17.50 free post blygo brand
     
  9. skyash

    skyash Active Member

  10. Rico glover

    Rico glover Member

    I'm having the same problem right now clutch engage at really high rpms what's the solution ?
     
  11. txcnguy

    txcnguy New Member

    The problem is the springs are too strong for our bike type of duty, they are made for continuous high rpm like a generator.
    I ordered this clutch, http://www.staton-inc.com/store/index.php?p=product&id=1676
    Will let you know how it works. I cant find a supplier of just the weaker spring.

    Also there are two types of clutches, steel and aluminium ones. Toss the aluminium ones in the trash.
     
  12. skyash

    skyash Active Member

    my motor dose 12000revs and it gets there .so i put the longer springs soft and the red hp pads now it monos on take off i still need to try the cuts in the bell house
     
  13. Rico glover

    Rico glover Member

    Mini solution get a flat head screw driver small with a fine tip and spread the clutch springs out in the first,middle,end part of the springs do it equal on every spring and it will engage really early.
     
  14. skyash

    skyash Active Member

    grate idea rico . i just tested my cut bell house and its a lot better heaps .now i might drill holes in it where the pads touch
     
  15. txcnguy

    txcnguy New Member

    Now I have another problem. The drive shaft connected to the clutch bell slops around in the gear case, cant see if the bearing is gone or if the shaft is worn. Anyone seen this?
     
  16. skyash

    skyash Active Member

    yeah my 4 stroke box bent and the chain came off in side and the shafts like to move in and out the box i rebuilt the in side from scratch.better chain bigger sprocket .my pocket bike one moves in and out a lot so i put a washer in side on the shaft .if you run the chain from the box to the back wheel to tight it will pull on the box sprocket and bend the ring of metal holding the bearing in and the pocket bike box is shorter by 2mm but helps on the stress.a good thing to have is a self tightening tension er .what box are you running ?
     
  17. txcnguy

    txcnguy New Member

    I have the cheap single chain Chinese one that comes with the kit. I see those 4G type drives but they are more money than what I paid for the whole kit.
    I can change a lot of clutches for $350. Did you see those double chain gearboxes? Any better?
    Rico I tried your spring tip, it helped a little but if i stretch them more they get loose on the clutch. I'm afraid they will fly off.

    Anyone know what size the bearing is on the clutch bell side?
     
  18. txcnguy

    txcnguy New Member

    The new Staton clutch arrived, I installed it and its worse that the quick fix Rico suggested. Another wasted $50. It doesn't engage till 5000 rpm.
    Useless.
    I wish these vendors would quit lying about their kit on the web.
     
  19. Rico glover

    Rico glover Member

  20. Rico glover

    Rico glover Member

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