Naruto Shippuuden Episode 51-52

[Abdula]

When have you ever seen Naruto make a rasengan with one hand sure he has tried but for whatever reason they have all been unsuccessful because this

Nah he can make it with 1 hand now he just used a clone to make it easier since clones r so easy for him to make.

just doesn't make any sense. If you can do it with one hand then why expend 50% of your chakra just to make 1 rasengan, answer is simple he can't do it with one hand. The only time I've seen him do it with one hand was when fighting Sasuke and that was only because of the Kyuubi's power.