jacobstechandbikes
New Member
I had this same exact issue happen about 6 months ago on a 280 dollar engine, which really annoyed me. But I knew their return policy, I got over it. It’s been great for parts anyway...
I’ve bought another one from a different site, a nicer pk80 one, CHEAPER too. I took off my 49cc kit I got from eBay for 80 bucks over a year ago, which surprisingly is the cheapest kit I’ve bought, and has been the most reliable, only needed a new magneto last week after I shorted it out.
I assembled the top end of the new engine, with the upgraded pk80 cranks, and I hooked up the clutch. It came with a motor mounted chain tensioner, which rubbed on my current bikes tire, so I used one from my old kit, that mounted on the frame. But after getting everything mounted up, and hooked up well, the same thing happened this year that happened with the last 80cc kit! I’ve never had this issue with a 49cc kit. When I go to pedal then release the clutch, it feels like I’m pedaling over sticky tar, and it just shows down. I don’t hear the piston going up and down, but it is, when I lift it up and turn the wheel by hand, it takes about a full two turns to hear air release from the exhaust. I know my chain was too tight, but it was getting dark out. I adjusted the clutch too, which changed nothing. I’m gonna try to loosen the chain tension up a bit tomorrow, but idk if that will fix it, any ideas would be appreciated. Thanks!
I’ve bought another one from a different site, a nicer pk80 one, CHEAPER too. I took off my 49cc kit I got from eBay for 80 bucks over a year ago, which surprisingly is the cheapest kit I’ve bought, and has been the most reliable, only needed a new magneto last week after I shorted it out.
I assembled the top end of the new engine, with the upgraded pk80 cranks, and I hooked up the clutch. It came with a motor mounted chain tensioner, which rubbed on my current bikes tire, so I used one from my old kit, that mounted on the frame. But after getting everything mounted up, and hooked up well, the same thing happened this year that happened with the last 80cc kit! I’ve never had this issue with a 49cc kit. When I go to pedal then release the clutch, it feels like I’m pedaling over sticky tar, and it just shows down. I don’t hear the piston going up and down, but it is, when I lift it up and turn the wheel by hand, it takes about a full two turns to hear air release from the exhaust. I know my chain was too tight, but it was getting dark out. I adjusted the clutch too, which changed nothing. I’m gonna try to loosen the chain tension up a bit tomorrow, but idk if that will fix it, any ideas would be appreciated. Thanks!