Original Sin, SJ, Pinball and the 2010 Sewer Snake have hinged wedges. So hinged wedges are realistic.
I've Ai'ed a couple more but i've been busy with Robonova 2, now that i've learnt skinning I ight include some skinned parts.
I dont beleive anyone would have a peice of metal on a door hinge in front of their bot in real life.