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Treb Jr. is an experimental 4' traction trebuchet. It was made from the remains of oak pallets used to carry plate steel to Digital Corporation. The arm is a young ash tree. The fulcrum came off a dead lawn mower shift lever. The pouch came from an old pair of jeans. Surprisingly, I did purchase some bolts and rope for this machine.
Here is a picture in the early spring being loaded with a milk jug partially filled with water. I'm standing to the right untying the last victim, and Kevin is standing behind the trebuchet.
We later learned that milk jugs do not make very good projectiles for such a small siege engine. At this time we were getting very unimpressive ranges, but most of our jugs could clear the tops of the neighboring trees. We used milk jugs because they were easy to tie to our throwing rope.
Since this picture we have moved to throwing soda cans, 20oz bottles, and small recyclable containers. With small stones we have achieved distances of up to 70 yards!
In the foreground you can see our cat Gwenevere walking dejectedly away. I guess she had been hoping for a ride in a catapult.
I am often asked "Why a traction trebuchet, and not a counter weight powered one?" A counterweight can launch things much farther, but as this image shows, a traction trebuchet is much more interactive. That's one of the things that has caused me to drag this thing to 4 different states since it was first built.
Even if I had the shots of the arm breaking into 3 pieces and flying about while the frame tried to flip over the edge of his truck upon us as we pull, I still don't think I'd put them on this web page. At least our projectile (1/2 gallon of water) went backward away from us giving us one less thing to worry about.
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Twas' brillig, and the slithy toves did gyre and gimble in the wabe...
|Last Modified: 05/10/09|