A History of the Onager in Pictures - Page 5
The Beginning
The first full scale Onager was built into the back of a full-sized Chevy Blazer
I had gone through quite a few arms to find one that didn't break or bend - I settled on a tapered 6x6 pine board about 7 feet long.
The sling was made from a reinforced diaper - best thing I could find after experimenting with denim, nylon, and other cotton material.
A come-a-long was used to cock the arm back. The release mechanism was very sophisticated - I used my trusty pocket knife to cut the rope holding the arm back!
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