2020年10月2日 · The flywheel is spun up to speed using a hand crank, through a timing belt and a set of hybrid 3D printed and CNC aluminium gears. Once spun up to sufficient angular velocity, a trigger releases...

2023年7月14日 · The flywheel is spun up to speed using a hand crank, through a timing belt and a set of hybrid 3D printed and CNC aluminium gears. Once spun up to sufficient angular velocity, a trigger releases...

One of his drawings shows almost an exact replica of the commonly-used trebuchet catapult. However, others of his drawings show modifications such as levers and wheels to crank the lever into place, and also bendable levers which look like branches of sapling trees which, with more torque, could hurl a projectile even further.

2018年12月13日 · The pulley system was based upon the trebuchet size with smaller ones using a hand crank while larger ones would require what was essentially a human sized hamster wheel. The counter weight trebuchet would generally replace the traction trebuchet until the popularization of the cannon and gunpowder which would be used to replace it.

2013年1月30日 · To create the winch to crank the arm down, we drilled a hole in either end of a small dowel with a pin drill. Make sure the holes are through at a 90 degree angle to each other. Insert a round toothpick in both holes and clip them off at about half an inch or 1.25 CM.

Here i will show you how to add functioning wheels to your trebuchet. Step 1: Cut Out Your Wheels and Glue on Your Axel Holders. Cut out your wheels with a circular bit to have a wheel with a hole already in it for your axel.

By doing this you allow the counterweight to travel in a near straight line that allows for an smoother arch of the arm and more effective transfer of energy to the projectile. - At the base of a trebuchet if there are no wheels the force of the swinging arm will shake the entire frame and may even tip smaller trebuchets.

Building a LEGO trebuchet using wheels as counterweights is a fantastic way to explore mechanics and physics while having a great time! Follow this guide to create your own LEGO trebuchet. Supplies

This Instructable is a guide to building 2 simple traction trebuchets from a single bicycle. One trebuchet uses the front forks and front wheel - the other uses the frame and bottom bracket.

2009年5月17日 · Counterweight attached to a rope wrapped around a wheel or pulley like part if the arm around the axle. The wheel can be well under a full circle, and can be very irregularly shaped to change the arm ratio during the throw.