1. M

    4 stroke bike clutch wears out after less then 10miles!

    Hello everybody, I’ve recently bought a 4 stroke 49cc engine kit for my bike. Everything went well building it, but after my first ride, which was less then 10miles, my clutch completely broke down(I’ll attach pictures). I replaced the clutch with a brand new one, but after taking another ride...
  2. breath_easy13

    Fitting Torque Converter on Vertical Mounted 212cc

    Catching anyone up since my last post. After mounting the 212cc, i found that the COMET torque converter would not fit. The back of the plate butts up against the seat post. Theres no adjusting, flipping the plate, etc that will make it work. So after todays research, here are the options...
  3. F

    Well that's disappointing

    Ordered a few different 2 stroke china girl kits. One from ZedaMotorsports(still waiting on that one), one from eBay that I'm having some good luck with, and one from CaliforniaMotorbikes that I'm having a huge headache over. The clutch pads are already worn out. In fact, I had to tighten the...
  4. R

    1999 Whizzer tension release

    I recently bought a 1999 Whizzer and spent the weekend getting it running, the issue is I don't fully understand the tension release/clutch (the leaver on the left). I am able to start the bike just fine but pulling that lever so that I can set the bike down without it launching off takes a ton...
  5. Samuel Whittle

    Cant get drive chain to move or engine to start.

    I’ve built everything together for the first time and Im confident everything is tight and where it needs to be but I cannot for the life of me get my drive chain to move. The clutch is engaged as Im trying to do so but it makes no difference. Please help
  6. Bigwheelz

    Bt80 clutch help

    My bt80 electric start will not engage to go forward i guess you can say it starts just wont go please help! Is it the clutch?
  7. I

    Clutch problem.

    i have a problem with my clutch slipping when trying to start my bike. It's a relatively new engine and probably shouldn't be doing what it's doing. The clutch does not slip when the bike is running. However when I let go of the clutch lever it will squeak and not grab and turn over the engine...
  8. B

    Finish my first build: 48cc Chinese kit

    Greetings. I'm new to bike building and I finished my bike yesterday. I had some trouble getting it together. The first real problem I ran into was the the front mount didn't rest correctly and was way too high, I managed some jury rigging by cutting the mounting bolts and welding it in once...
  9. B

    Clutch arm completely loose (and other problems during my first build)

    This was a long first time post about not putting in the bucking bar.
  10. Y

    Predator 79CC FRICTION or OTHER motor need help from the pros

    Hello there, I am new to gasoline powered bikes, Years ago i built a Lithium brushless, but got out of it. I just want to cruse on a motorized bike, simply and not get too involved. Speed doesn't matter just a little engine roar, ill be pedaling the whole time as well with it. System must be 4...
  11. Memy1251

    Drive sprocket won’t turn

    So this is my first build, and once it was all together, I found that on disengaging the clutch the bike would not roll but what little slack the chain would allow before the chain would run out of play and snag. I’ve gone through clutch re-set and cleaning procedures, such as cleaning the pad...
  12. O

    Clutch making strange noise while engine is idling [Video]

    Hello everybody, I'm pretty new in this community so please don't blame me too much :D So let's get started with the problems: When i start my engine and i pull in my clutch i start hearing some fast banging noise(not really sure how to call it) coming from the clutch plate side. And when I...
  13. D

    Gear always spins freely

    My bike won't start, and when the clutch is engaged or disengaged the gear ALWAYS spins freely, why is this? And how can i fix it? Urgent matter please help soon
  14. D

    Clutch Operation

    Is there a way of making the clutch/clutch lever operate like a normal motorcycle clutch i.e. pull in to disengage and let out to engage? Thx
  15. M

    Primary reduction and clutch question

    I am looking for a primary drive reduction for the 79cc Predator. I am finding some that have a plate that bolts to the engine around the 5/8" output shaft but do not know which ones are more reliable. Is the Max-Torque clutch the one to get? I am seeing several others, some that are tuneable...
  16. J

    I need help in version and type of my kit engine

    I have a problem in my clutch and I do not know what type and version it is, I need to know to buy a new one, could someone help me find out what it is? I only know that my engine is 4-stroke
  17. carl clack

    clutch shaft

    Hey guys new to this Had my bike for 2 days and decided to start taking things apart just to check on them and see how it works ( i know now that this was not a good idea) long story short i cannot get the plate that holds the pin that pushes the bucking bar and accuator bearing to close, i was...
  18. Lenamarie81

    Chain broke how do I get it off the clutch sprocket it is hard .

    My chain broke I'm in the process of installing a new one how do I get the chain off the clutch sprocket help please!
  19. B

    What are the dimensions of the clutch bucking bar?

    The bucking bar on my bike was bad. Being a novice machinst I need to know the length and diameter of the bar so I can make it. The bar tends to have a lose fit so I am just looking for a ballpark figure for a standard 2 stroke engine.
  20. J

    My clutch won't engage.

    I have an 80cc engine on my bike. Well about a week ago I was on a beautiful ride. I came up to a park that only had one path and got behind a maintenance golf cart. He was putting along pretty slow. So I cut through the grass and beat him around the corner. I rode out of the park and made it to...