The hutchinson 2.5" tire is so much smaller than the 2.75" gazelle, and a lot lighter. I installed that and the correct 415 chain and I was hoping that would make a difference. I also installed the treatland 50cc kit, and up jetted my carb, and installed the proper size atomizer. I ran it around the block and then changed the transmission fluid, with synthetic motor oil, since a lot of people on here seem to recommend it. It still accelerates slow as shit. There is a lot of drag coming from the front sprocket, almost like the brake is slightly on. I checked and the rear brake isn't the issue - it spins freely with the drive chain off, but put the drive chain on and it sucks. When it's up on the stand with the engine running, the engine can barely turn the tire at idle.
Everyone else who installed a larger front sprocket, did you have any similar issues? Did the larger front sprocket suddenly make it a lot harder to turn that rear tire?