Ok, I need some help please. I bought a a eflite blade cp original. (used) but in great condition.
the problem im having is ...

1. battery is fully charged
2. stick battery in.
3. crank up the throttle
4. get to 2/3 throttle
5. get to full throttle (spinning like crazy)
6. stuck on ground, wants to lift off but can't


i am experienced when it comes to flying helis but i cant figure out why it wont lift.

everything is checked out, been over it three four times already and all is great.

stumped??

thanks for any responses