u/LambdaLassan

Scram 409x : I am on a trip and there is sudden chu chu noise coming from back side of bike. What it could be, you can hear at start of video????

I'll be taking it to local mechanic this morning. Need suggestions. Which part is problem

Video link: https://drive.google.com/file/d/1UQpS0z\_QA82zcvzAljJ2k2NUlki3IO\_l/view?usp=drivesdk