LeviNewBikeBoy
New Member
- Local time
- 1:23 PM
- Joined
- May 17, 2022
- Messages
- 4
Hi, recently i found a rusted out Raleigh mountain bike with a 49 cc 2 stroke kit attached and an nt carb. It was pretty badly maintained, maybe a little shoddily put together and it looked like it hadn't run in a while. Motor dated 2007.
I did a bunch of research on here and elsewhere before starting the to work on it. I cleaned and reassembled the carburetor, replaced the kill switch, i removed the rust from the tank and resealed it, put in a new throttle grip and cable, fitted new brakes and new tubes. It was also missing any air filter so i used a couple layers of steel window screen for now.
I finally got it to start the other day and it was seemingly running well but the clutch wouldn't disengage at speed. The kill switch wouldn't work, so i was only able to stop the engine with the brakes. Not so safe. I went in and tried to adjust the clutch this morning, but now the engine is dying when the clutch is released.
The engines seems to take longer to die at high revs and when the engine is hot. It never lasts more then a few seconds with the clutch released. Another issue, if i tighten my low idle screw up then the idle sounds healthier, but sometimes the bike will seemingly rev much higher with the clutch disengaged, and then accelerate with the clutch engaged, even without throttle. This isn't consistent, but occasional. Pretty scary, i had to use the kill switch.
Also the idles sounds very weak when the bike starts, especially cold. It sounds much healthier at mid to mid high revs. Also, i seem to have the strongest acceleration at 70-80% throttle, but the engine bogs considerably if i go beyond that. Anyway, I know there's a lot going on here but i'm a new guy coming over from ebikes, if anyone has any ideas or next steps id appreciate it.
I did a bunch of research on here and elsewhere before starting the to work on it. I cleaned and reassembled the carburetor, replaced the kill switch, i removed the rust from the tank and resealed it, put in a new throttle grip and cable, fitted new brakes and new tubes. It was also missing any air filter so i used a couple layers of steel window screen for now.
I finally got it to start the other day and it was seemingly running well but the clutch wouldn't disengage at speed. The kill switch wouldn't work, so i was only able to stop the engine with the brakes. Not so safe. I went in and tried to adjust the clutch this morning, but now the engine is dying when the clutch is released.
The engines seems to take longer to die at high revs and when the engine is hot. It never lasts more then a few seconds with the clutch released. Another issue, if i tighten my low idle screw up then the idle sounds healthier, but sometimes the bike will seemingly rev much higher with the clutch disengaged, and then accelerate with the clutch engaged, even without throttle. This isn't consistent, but occasional. Pretty scary, i had to use the kill switch.
Also the idles sounds very weak when the bike starts, especially cold. It sounds much healthier at mid to mid high revs. Also, i seem to have the strongest acceleration at 70-80% throttle, but the engine bogs considerably if i go beyond that. Anyway, I know there's a lot going on here but i'm a new guy coming over from ebikes, if anyone has any ideas or next steps id appreciate it.