I would love to see footage of the Dino Ultrazord getting filmed. Unless the Megazord itself is just an empty suit.
most likely just a big model for far shot, and some set if there is a closeup where the megazord requires any movement, which was rare i believe?
Not to mention how they movie it
well to be fair, the big ones are all on like a moving platform of some sorts, or just didn't move at all, just wave the arms a bit, which is the challenging bit. Even if everything is lightweight material, shit probably still weights 100+lbs of crap on your back.
would also love to see combination megazord suits next to base ones. I'm sure the costumes are module based, so you can just wear one 'arm piece' and bam, new mecha combo... but when they start getting taller (but still moveable), its not like they get taller suit actors... so I'd guess elements of the suit are scaled down.
Does sentai ever have behind the scenes on the bluray/dvd's? Probably not of mecha stuff. Think that recent leaked dairanger mecha leaked stuff is the only footage ive seen of BTS mecha stuff... which is super interesting
There are some godzilla BTS stuff on dvd's (and on youtube if you search right) that are really cool.