Ok. I had a little crash with my cx2. No visible damage. Since then, the upper rotor rotates at an obvious slower rate that the the. lower. Initially after the incident, the motor was making a winding noise, which has since stopped. However, the upper rotors will not produce enough RPM's to offset the lower blades; therefore, the heli just sit and spin. HelP!

sounds like your inner shaft and gear is off.
check out this link to help you fix it.


http://www.heli-max.net/mediawiki/in..._and_CX2_Setup