noise after clutch engaged

hea guys i just put a 49 cc grubee engine 2 stroke engine on one of my 3 wheel bikes ,it run great and starts easy but after you get goin with the clutch fully engaged it make a rattlin kind of noise it is super quiet with the clutch disengaged any one know how to make it quieter ,or does anyone make a kit with out this noise i have seen several you tubes on motorized bikes and most have the same noise

Part of the noise comes from the reduction gears in the right side of the engine.

Make sure you open the cover and put some grease on them, about once every other week, depending on how you ride it. Do not use oil, because the clutch is next to them.

As those two gears wear out with time and use, the noise should be reduce.

See You in the Road !!!

hea mel thanks a lot for your answer and your time jack////////