Here is the link of divine-armed-crossbow for those unknown.
Some useful picture can be seen in the website.
The ancient historical descripition of divine-armed-crossbow:
Bow span - 98cm
Length - 140cm
String length - 77cm
Effective range - 150m
Maximum range - 370-460m
It is the most powerful projectile weapon for single soldier in the ancient china. It reprensent the highest technical level of single soldier crossbow. After it, the fire arms gradually replace its role in the army. In order to protect enemy states know its technical stastics, any further description is strictly forbidden, So the most important cocking device was lost after the coming Ming dynasty.
(Sony dynasty[invent]-->Mongolian dynasty[in use]--->Ming dyansty[lost])
I was confused for this guy's replica of Shen-Bi-Nu.It may not the true ancient Shen-Bi-Nu.
1. I don't know the reload principle of pedal cocking device without the help of spring.
2. I can see the ratchet in the cocking device to prevent the mis-firing of the bow string. But I don't know the mechanisim of cog-release.
Any genius can draw and design such a pedal cocking device ? Great appreciate.