max weight I've tested so far is 23kg and its manage to lift my other feather up in the air easily
in the pic i just used a couple of bits of angle steel, welded to the bacl of the bot with a hole drilled through
viewtopic.php?f=240&t=4684&start=45

i also re did the hinge because the door 1 bent when it got rammed into a fence in testing