Similar to the RI3D project, our bot has a double 4 bar for high hang. However, we wanted something stronger and lower profile then a polycarb hook, so we made this:
https://drive.google.com/file/d/0B1okONQ0XiJ0VldhRnpDS1U4NTByTnh3UHFqN1prWlJMODBB/view (video)
https://lh4.googleusercontent.com/G4BZrruG41cMrH5NCRJCcxi7uFTXpDLS2je8wRomkl4sR7_v4Ikm4xYHKBSdpLpnBIW_DLgAk50DdnApclV5_b_8FgVrT3NGqEQs=w3840-h1897-rw
It’s very strong and works like a charm.
Why steel?
they probably didnt have other metal on hand, and steel is stronger and less bendable