Earth auger - video

Earth auger. By Diamleon Diy Builds. 15:31 video:

https://www.youtube.com/watch?v=YEO0ybUufq0

I am impressed with the auger made from discs part but it would run better if the centre was a tighter fit in the holes. I wonder how it would dig in virgin soil. Obviously his gear reduction is not enough.