u/Lazy-Writer2169

So ive been trying to figure out whats going on with my bike. It’s a 79 bike falcon pro. Pretty much same thing as a light bee, but it’s been making this grinding noise and progressively getting worse. It only happens while under load and accelerating quickly. It does not happen when i just pick the rear tire up and twist the throttle. “I wish i would’ve took a video before i started taking it apart” i’ve bee seeing that it could be the jackshaft or a bearing or possibly the motor. I’ve checked the belt and my chain and sprockets and every looks good. Let me know what you guys think