2 stroke

  1. S

    Engine Trouble Will start for less than 5 seconds

    I will start my bike, it will run and keep going slower and slower over 3-5 seconds and get really rough then when I pull the clutch it shut off. What could this be? I just bought it and it's brand new bike. When I got it running, if I pull the clutch or let go of the throttle it will also...
  2. Khamsin

    Kick starter ?

    Has anyone ever thought about creating a kick starter for those 2 stroke kits? Like.. putting a pull start system on it and putting a lever on the engine to pull the cable instead of a hand pull system.
  3. Matt Barrack

    Fuel Ratio

    So I bought a 2 stroke engine from a store and on the ad it said tbe break in ratio is 10:1 but everywhere else I see selling them it says break in is 16:1. Should I just go with their ratio because it's the only place I found with a different ratio.
  4. kmarcetjr

    Possible changing form 2 stroke to 4 stroke. Questions

    I posted a couple days ago about issues with my 2 stroke set up and some one suggested I consider 4 strokes. I did a little surfing and found that my frame is not large enough (4 stoke needs about 8 & 1/2 by 9 & 1/2 ?) My frame is just short of that. So my only option with this frame is a rear...
  5. Eddie Medley

    Engine speed

    I have 80cc engine that tops 18 mph at best with 38 tooth sprocket, speed carb. My old 80cc engine top 27 with 44 tooth sprocket with stock carb I had 49cc with 38 tooth sprocket speed can that went 19 mph 20 at best The engine now is sputtering a bit How can I fix this
  6. Dougmcd87

    Votes in guys 4 stroke or 2 stroke?

    I'm currently thinking of switching from 2 stroke to 4, but need your guys advice first ........ how reliable are 4 strokes? Are they much slower and can you mod them to be almost as fast ? Can I also just swap out engines or is it all new kit as well Thanks in advance guys :)
  7. Eddie Medley

    Centrifugal clutch kit

    Hello Has anyone have the cetrifugal clutch for the 2 stroke bicycle engines and I have a couple of questions 1. How good is it? 2. Where can I get one under $50? 3.how do you maintain it? Please help it will be greatly appreicated Thanks
  8. Cozmik Mezzenger

    Update On 2 Stroke Build

    I had to send the Intake with the "paint" issue back because I bought the wrong size for my engine. So, I am waiting for another one now.
  9. woodenships9797

    Crankshaft Extension Sleeve for 2 Stroke 80cc

    Where can I get a crankshaft extension sleeve for a 2 stroke 8Occ chinese motor? It did NOT come with the clutch kit I purchased online. If someone could please let me know where I can buy one, contact me at woodenships97@gmail.com or message me directly. Thank you. P.S. - thank you Fabian F...
  10. Cozmik Mezzenger

    Getting back to stock clutch

    Well, I'm going to have an interesting time trying to get this sleeve off so I can get back to stock... Anybody have any tricks?
  11. B

    Help!! My bike won't stay on anymore

    Hi so I built a 2 stroke motorized bike and it's been sort of a pain so far but it was finally working good but then I took it out yesterday and I would get up to speed then drop the clutch and give it gas and it seemed like it started but really weak then when I give to more gas it comes to a...
  12. B

    Help with clutch

    Hi so I just built my motorized bike and I love it except, I have to constantly adjust my clutch cable and flower nut to get the push button right on the clutch arm. I will have it set up perfectly and everything is tight like the cable screw then after some riding it feels like the cable...
  13. K

    49cc/2 stroke on a hybred trike?

    I basically just wanted to make sure a 49cc/2 stroke would move a trike (Schwinn Meridian) from a standstill with no pedaling before I went that route. The long version follows. The bike already has a 1000w front hub motor that does fine, however, I cannot pedal due to handicap and don't want...
  14. G

    Need help for deciding on personal bike

    Hello, so anyone who has seen my previous post knows I have built a bike before but now I pose the question of which configuration is the best for me. Here is what I have laid out, I have a La Jolla street cruiser from Next that I will be using as my frame of choice. While it isn't the best...
  15. M

    Offroad Go-Ped Build GP460 engine dimensions?

    I am working on a project building an offroad goped not unlike the Trail Ripper. I have used the GP460 before on a motorized beach cruiser build and was extremely satisfied with the motor. For my current project, I need the engine mount locations and dimensions relative to the output shaft of...
  16. Khamsin

    "Supermoto" build

    Here I have my ol Kent Terra... getting ready to slap a 2 stroke engine on it....I've already got some fenders on the way, Plan on getting a pit bike headlight, triple tree fork and some hand guards... cant forget slick tires. I've seen so many people make Dirt bike style builds now. One guy...
  17. N

    ram air filter housing to boost mid- & hi-range power?

    my motor's a skyhawk 2 stroke, the gt style that comes w/ reed valve (though I haven't taken in the piston skirt yet, so I dunno if the reed does me any good). I'm thinking to use a plastic cup from gas station or the plastic shade off an old florescent light to make a ram air scoop & filter...
  18. N

    oil put in exhaust port harmful?

    I had the exhaust off while working on my bike at a park, & I soaked some paper in 2 stroke oil & put it in the exhaust port to keep dust out. It seemed like a clever, easy way to protect my motor, but my friend warned me it would be harmful if oil got on the side of/went beneath the piston, b/c...
  19. B

    ZBox Series 4 Needle Bearing Failure

    Needle bearing in my 2800km Zbox S4 66cc engine has broken up. I have no idea when the first needle shattered but it stayed in the cage for quite a while as it has eaten a small chunk out of the wrist pin. Then, at some point a chunk of roller has - somehow - made it up the transfer port where...
  20. Mohamad Azzo

    Break In Trying to start engine for the first time...starts then stalls!

    Hello all, I have a 2 cycle 66/80cc engine that I bought from bikeberry.com... Took a week to install because of their crappy parts but I am finally finished. At first, the bike wouldn't start at all. I would pedal and pedal and give it throttle and release the clutch and it would just stop the...