The Trebuchet Project

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Blog series by William updated 10-20-2010 04:47 AM 3 parts 9030 reads 16 comments total

Part 1: The Frame

10-16-2010 05:28 AM by William | 7 comments »

I am a gun collector, but have been fascinated by medieval weapons for years. Ever since I first built anything out of wood, I’ve thought about building a trebuchet. I have several times even started making drawings and doing some figuring for measurements and weight distribution. I searched for a long time for some plans for one, but all I seen have either been way too high or looked too flimsy to withstand any kind of real fun without having to add so much extra bracing as to effect t...

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Part 2: Bucket And Swing Arm

10-17-2010 04:33 AM by William | 1 comment »

Well, I did find my steel rod today for the swing arm axles. The two axles are held in place with washers and cotter pins. I’m glad I bought extra length of rod. The trick is to make sure you have the washers sandwiched on each side of the swing arm and on the insides of the frame and bucket with cotter pins as tight as possible. If it is not tight enough, there will be just enough wobble to allow the bucket to hit parts of the frame while it makes its swing. I realized this quickly thr...

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Part 3: No More Baseball

10-20-2010 04:47 AM by William | 8 comments »

I got the chute installed. This is what the sling with the tennis ball will ride on.Then I rigged up the cord for the sling and trigger. Everything is made with 3/16” nylon cord. For the sling, a length of cord run from an eyelet under the swing arm to one side of the sling. Then another length of cord runs from the other side of the sling to a brad nail on the end of the swing arm. The timing of when exactly the sling releases the tennis ball is adjusted by changing the angle of the be...

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