I know they are not to often brought up on here but i had gotten my daughter a ltz 250 for christmas and it needed a few little things done to it and i did them . This quad is drive driven , so i had taken it for a ride and when it is given gas on take off it makes a noise like the break pads fell out and are lodged but it is not the case it has drum breaks the sound goes away then occasionally comes back i had taken the breaks apart and cleaned everything and left the breaks loose so they would not function so then i could rule out the break system . then that led me to believe that it is the driveshaft area which is close to my foot where it felt like the vibration was coming from does anyone know anything that this could be any info is appreciated thanks mike.

That bad boy is a shaft drive... Who knew!!

I have no idea how to check. Just throwing it out there.