I ride a Linhai bighorn on our family farm. This is something my gramps bought less than a year ago to help haul wood with. He had a stroke and it's hard for him to get onto his tractor, so he thought this would be better. It isn't for him, but it's way more handy for me. I usually haul firewood and trash with it. No major abuse whatsoever. It's got less than 10 hours on it if I had to guess.
Lately it's developed this problem where in gear (notice only in forward) the bike will shudder and lurch. I figured out that the driveline is binding somewhere, and pretty bad too. If you give the gas it will go away at speed, but just putting around slowly it's very evident something is wrong.
I jacked the bike up and chocked the front wheels. In gear with no weight or load on the rear wheels, I cannot get the problem to replicate. Not sure what to do here. I want to file a warranty claim (and soon) but I have a feeling I'm going to get blown off if I can't tell them a rough idea of whats wrong. Anyone else have similar experience?