i have seen the doors you describe and remember that episode of this old house. my only problem is head room, the ceiling is about 7 feet, if i went with roll up doors i'd be banging my head on them!
don, thanks for the offer on the hinge. i would just need to find about eleven more just like it. there is a medium duty truck dismantler near me. perhaps i could find some just like it on a schwanns truck. they certainly look heavy duty!
craig, thanks for the compliment!
you call them ferrets, i call them weasels.