I am planning to build a trebuchet that is capable of launching projectiles around 10 pounds the length of a football field or more. Heavier objects can be launched if wanted but significantly less range. Copy Machine sailing thru air? Well basically I am just asking for any advice. Currently I have at least 800 pounds worth of lead stage weights available to me. I am trying to find an arbor so I don't have to build a box to hold that much weight and they are designed for it. Ok also I am planning the axel to be 7 feet and and 9 inches high. Due to available wood. To hold up the approx 1 ton throwing arm (approx weight when loaded 1ton = 1000 pounds) I am using a total of six seven by ones. That means 7 inches wide and 1 inch thick. Or 7 by 3 since they will be bound together. These pieces of wood will be vertical to the ground and bear the grunt of the weight. Then I have 8 pieces of the same wood angled at 45 degrees to the ground to support it from falling foward or backwards. Then for left and right I got 2 well built triangles that are 32 inches high and 38 inches wide. Um lets see I just need to ask your help since you guys are all extensivly capable of building things and know tools and materials the best. How thick an axel I might want to hold up a 1 ton object? Can I get bearings for an axel which should be at least a couple inches in diameter like 3 but I might be wrong which can support over a ton of stress? If anybody knows where to get an arbor the ones used on the fly system in stages? Also the fun part I need ideas of what to throw. AND A NAME for the to be born beheamouth. So far for thowing ideas I got 8 pound bowling ball fruit like watermelons and cantalope and pumpkins. Also I am going to throw one of the cpr dummies. The baby version of coarse cause a full size would be too heavy. Also I plan if I can find a crappy computer monitor but I don't know the weight of smaller ones. I also wonder if you guys have any ideas for targets since trebuchets are highly accurate if done right? Any other ideas? I will have a drawing latter on but its basically a Trebuchet just a little moddified for safety and stability. I just need some help and advice I hope I posted this in the right section.