Again, the key innovation of this technology is that when he wants to go fast, he just grabs the levers near the pivots and goes through a big angle every stroke, and as the going gets tougher, he just slides his hands up the levers, creates more torque, and kind of bench-presses his way out of trouble through the rough terrain.
Sekali lagi, penemuan kuncinya adalah saat dia ingin bergerak cepat dia hanya perlu menggerakkan tuas di dekat porosnya dan sudutnya menjadi besar dan saat medannya berat, dia hanya perlu menggeser tuasnya sehingga dayanya lebih besar dan membantunya melewati medan yang berat.