Piston ring Problems, uh o..

Discussion in '2-Stroke Engines' started by Jixz, Apr 17, 2008.

  1. Jixz

    Jixz Member

    :shock:

    I was ridding down a main street in my town, top end and i was pedaling along in my highest gear and .. *pop* *burrmmm* motor dies. I petal a bit more, just gurgles and dies. I disengage the clutch and start to petal home and the decide to try one more time. *SKIDDDDDD* : back tires locked up : now the drive sprocket will NOT even budge when the clutch is engaged. The piston isn't torn up, carb connections fine, spark plugs fine. Just NO movement.

    I have no clue where to start, so any nods in the right direction are great.

    MBC EDIT: THIS THREAD HAS BEEN MOVED
     
    Last edited by a moderator: Apr 23, 2008

  2. Abeagle

    Abeagle Guest

    Sound like something in the clutch side may have came apart. I'd start there.
     
    Last edited by a moderator: Apr 17, 2008
  3. Jixz

    Jixz Member

    k, any more ideas, I cant really go work right now.. tornadoes are on the ground a few miles a way.. i should PROBABLY go into the bathroom... but this is much more important.
     
  4. Abeagle

    Abeagle Guest

    Lets start out with what you have looked at and taken apart so far.
    You say the piston is ok, did you removed the head to see how did you find out?
     
  5. Jixz

    Jixz Member

    removed head, intake and muffler, all views are showing it to be fine
     
  6. Abeagle

    Abeagle Guest

    Ok, have you looked into the drive spocket area to see if something maybe a rock got lodged up there? Does the clutch seem to disengage normally, i.e. the clutch arm moves freely?
     
  7. Jixz

    Jixz Member

    arm moves just fine, the chain isnt jammed, no sign of damage from that point.
     
  8. Abeagle

    Abeagle Guest

    Well at this point I would suggest that you pull the clutch cover and have a look. Once you loosen the screws give the cover a light tap to break the gasket loose before removing all the screws.
     
  9. Jixz

    Jixz Member

    the cover that reviles the drive sprocket? because if your referring to that ive already removed it, but im not sure which cover your referring to.
     
  10. Abeagle

    Abeagle Guest

    The cover on the right side as you sit on the bike and look down, it has five screws.
     
  11. graucho

    graucho Active Member

    Was it a pop as in a backfire, or a bang like throwing a rod or seizing the motor? These are never easy. Since you said you were going top end I tend to believe engine not clutch. But, the HT's clutch setups are cheap pieces of carp so it makes it hard to define the problems between them. If the rod went, it could have went up and down a few times and when you let out the clutch for the second time a piece may have jammed. This wouldnt show on the top side.(This would explain the engine side locking) I have to think a while on the clutch/tranny side.
    http://www.motoredbikes.com/showthread.php?t=5977&highlight=clutch+diagram
     
    Last edited: Apr 17, 2008
  12. Jixz

    Jixz Member

    i took that off earlier but just saw some large gears and a screw in the middle, didnt go any farther from there. but when i disengaged the clutch and moved the sprocket that large gear moved.
     
  13. Abeagle

    Abeagle Guest

    Well the fact that the large Ring gear moved is a good sign that the rod or bearing did not explode. Does small gear also move at least one full revolution? It seems to me I remember someone else with the output shaft that seized, I will do some searching for that thread and get back to you. In the mean time can you disengage the clutch and try to spin the outer clutch plate?
     
  14. Jixz

    Jixz Member

    Part A. The metal disk inside the larger sprocket
    Part B. The Large Sprocket
    Part C. The Smaller Drive Head




    umm, im not sure exactly what your asking, but heres a idea of what i know.

    Part A spins freely when clutch is off. Part B and C stay still, but thats because there disengaged.

    then i engage the clutch and part A and B TRY to move, but it appears C is keeping it from moving. But i do part c budging a little bit from its spot, this may just be me.. but can i get a diagram of the drive shaft to see if it may be something deeper into the assembly ?
     
  15. Abeagle

    Abeagle Guest

    Here is a link to a pdf file on the parts and exploded view of your HT engine.
    Open the pdf in post 6.parts
    Ok after reading your last post it appears as if something in the engine crankshaft area let go. Maybe a siezed bearing or broken connecting rod as Graucho mentioned earlier.
    I am glad you did not get hit by any tornados last night, I hope you have the same good fortune with your engine. I will continue to try and help you out by answering questions as they come up.
     
  16. Jixz

    Jixz Member

    ok, so can someone walk me through what i need to do and what i need to look for while im doing it?
     
  17. Abeagle

    Abeagle Guest

    I have never had one apart that far, but if you refer to the parts pdf you should be able to pull it apart. Or it might be better to purchase just the engine, if you don't have access to the necessary tools.
     
  18. Jixz

    Jixz Member

    links to that? i would really like to find where i can get one
     
  19. Abeagle

    Abeagle Guest

    About half way down thepage
     
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