Set carts
Posted: Sat Feb 16, 2013 8:59 pm
These are some set carts I made for a road show about Marvin Gaye, the Motown singer who was gunned down by his father. When a show is on the road, there are literally thousands of pieces that have to be packed into semi trailers...lighting, sound, costumes, the set....and if everyhing is packed in loose pieces there is a good chance of it getting lost or damaged. Hence the set cart! All of the set pieces can be loaded on these carts and strapped down to it. Set carts also make loading and unloading the truck a lot easier because everything can roll off the truck and onto the dock. The last thing you want to start your day off with are a bunch of angry Teamsters or Stagehands because they have to hand carry everything into the building!
The carts can be made of just about any size square tube, it mostly depends on how much weight they will carry. These are made out of inch and a quarter with an 1/8th inch wall. The caster plates are 1/4 inch flat stock. Everything is welded together, even the casters are welded onto the plates. The carts are sized width wise so that 2 or more can sit side by side in the trailer. Every inch of trailer space is usually used and there are people whose job it is to figure out floorplans for a truck pack.
One of the most important considerations on a set cart is the wheel spacing. Not every theater will have a loading dock or a forklift, so the show will have to come off the trailer via a ramp that the trucks carry with them. The wheels on the cart have to fit inside the channel of the ramp so they don't bind, but they also have to be spaced wide enough so the cart doesn't tip over. On longer carts, like the ones I made, there is also a set of center wheels. The center wheels have to be placed further in towards center than the outer wheels. When a cart starts to go up the ramp, there is a point where the center wheels are not touching the ground. As soon as the cart reaches the point when the center wheels connect with the ramp, they will tend to swivel out and bind up on the walls of the ramp. By putting the wheels in closer to center, the moment they come in contact with the ramp walls, they'll be forced into a straight line without binding.
Below are a few pictures. The first one is the drawing I got for the carts. I wanted to show it because it's pretty typical of the drawings I get for a lot of our jobs. This one was messaged to my phone.
The second is a view of the bottom of the carts with the caster plates and casters welded on.
The third is the almost finished cart. There are still a few cross pieces to be added, but they are 99% done and ready to be loaded!
The carts can be made of just about any size square tube, it mostly depends on how much weight they will carry. These are made out of inch and a quarter with an 1/8th inch wall. The caster plates are 1/4 inch flat stock. Everything is welded together, even the casters are welded onto the plates. The carts are sized width wise so that 2 or more can sit side by side in the trailer. Every inch of trailer space is usually used and there are people whose job it is to figure out floorplans for a truck pack.
One of the most important considerations on a set cart is the wheel spacing. Not every theater will have a loading dock or a forklift, so the show will have to come off the trailer via a ramp that the trucks carry with them. The wheels on the cart have to fit inside the channel of the ramp so they don't bind, but they also have to be spaced wide enough so the cart doesn't tip over. On longer carts, like the ones I made, there is also a set of center wheels. The center wheels have to be placed further in towards center than the outer wheels. When a cart starts to go up the ramp, there is a point where the center wheels are not touching the ground. As soon as the cart reaches the point when the center wheels connect with the ramp, they will tend to swivel out and bind up on the walls of the ramp. By putting the wheels in closer to center, the moment they come in contact with the ramp walls, they'll be forced into a straight line without binding.
Below are a few pictures. The first one is the drawing I got for the carts. I wanted to show it because it's pretty typical of the drawings I get for a lot of our jobs. This one was messaged to my phone.
The second is a view of the bottom of the carts with the caster plates and casters welded on.
The third is the almost finished cart. There are still a few cross pieces to be added, but they are 99% done and ready to be loaded!