noise from my motors help

[Kendallst]

I need some help with trouble shooting a possible ESC or motor issue.

Video attached shows my 5" Alien frame with turnigy 1300mah 3s battery.
ESC - Littlebee 20amp
Motor - Cobra 2204 2300kv

Disregard the initial take off, fast forward to about 38 sec in when I'm doing straight line movements.
Sounds like a squealing pig with possible rattle noise. Is this normal for those motors?

FYI - turn your volume down its loud!

http://vimeo.com/164793878

 

[TeckDsgn]

I had a motor that sounded like a squeal or grinding noise of some sort, I fly in desert and very dusty area, i took my air compressor and blew air through the motor to see if there was any dirt particles in there and now the noise stopped and the motor runs smooth again.

 

[kevparang]

Did you get it fixed, and wow that is bad?