![]() We didn't get to try baseballs or golf balls because we didn't have a safe place to shoot them. Higher weights tended to release the ball with a lot of spin which sent them off the mark. For reference, that is about as far as a professional can "serve" a tennis ball, trading raw speed for improved angle of launch. When my son was trying higher weights (about 12 pounds), he was sending tennis balls over 256 ft, or 78 m. This style of catapult is able to transfer more energy into the projectile than a traditional medieval trebuchet because the energy source is stored higher and the whole arm is accelerating for a longer time. Both materials are easily available and easy t. One from depron foam sheet and another from hard cardboard sheet. The sling is accelerated through an arc, and if correctly adjusted, the loop of the sling is released as the projectile is fully extended and the throwing arm is 45 degrees to the horizontal. In this video a made two sling shot gliders. As the pendulum arm begins to separate from the throwing arm, the 4-to-1 ratio of the lever begins to significantly increase the speed of the throwing arm and the sling is released. The weights will begin to fall, rotating the whole assembly. Gently push the weights over the front of the axle and remove your body from the area. At this point, you continue rotating the whole arm assembly until the weights are directly above the axle. As the pendulum arm is brought up, it will pinch the projectile to the throwing arm. While standing to the side, grab the pendulum arm and swing it back with one hand while holding the swing arm upright. Load your projectile into the sling with the weights hanging straight down. ![]() The arm will swing with sufficient force to easily break the thickest bones. Form the base by positioning the 36 2×4 flat wood in an elongated manner on your workbench or on any stable surface. Here is a picture of the Wyvern Built by web visitor Lucas Parks! Great job Lucas and it launched a potato 42 Meters!Īnd here is the Wyvern made by David.Warning! Do not stand behind or in front of the catapult. These two pictures are from Travis who made the wyvern! The first picture shows the distance it throws. In the first weekend they went through over 150 water balloons.Ĭan you make the Wyvern Catapult? You sure can. It came out great and he got a little over 52 feet distance with it!! And his kids had a lot of fun throwing water balloons with it. Here are two pictures from Stephane who made it with his children. Okay, lets start the assembly of this catapultĬan You Make this Catapult? You sure Can. ![]()
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