No it doesn't sound normal.
As Jerry Hall would say - "its got the ring dings"
Will it idle if you stop hitting the throttle?
Here is my bike at a idle. The idle should settle down to a nice cadence as that big piston fires off.
http://youtu.be/SyWrQhXgPn8
have you checked for a air leak
Yea it will idle it was just as you put it I rev it up and it just ring ding back to idle. That was not my video it sounded like mine but mine will idle nothing leaks on the motor could be between air filter and reeds. I wonder if its that crapy stock pipe
It's not the pipe -
Did you do a air leak down test on the motor?
Do a google search for 2 stroke leak down test and confirm.
it idles fine and sounds normal i was running a little crapy sputtering here and there so i checked and cleaned the jets ran it again ran better still a little sputtering at low rpm and top rpms got back into the garage and pipe sounded different there was 4-5 inch crack in the first bend in the exhaust so finally have a better reason to tell the gf instead it just looks ugly.
rider your idle is smooth.almost as smooth a keith stones. mine is not that smooth 2 ring ding then idle. ill post a vid of mine