I spent a lot of my life fixing and teaching to fix helicopters so have always been fascinated wit models of any chopper I used to know inside and out
This was cool.. seemed like it was entirely electric.... a few years ago, a Japanese gent did a CH 47 type with twin turbines and true combining transmissions like the full sized craft.... he had $12,900 invested to make the Model craft fly... sounded real, looked real and flew a real looking flight schedule