Copterx 450SE with 13t pinion.

[mulikow]

Tried the 13t pinion instead of the 11t pinion. It had a bit more punch to it...however...it was so cold that my rx froze up in flight...it wouldnt switch back to normal mode..it took a few seconds as you will see in the vid.
[ame]http://ca.youtube.com/watch?v=rJg3fvnZnFk[/ame]