3/20/14 Trebuchet- Gunawork, Nathan, Jackson

This will be the PVC pipe that we'll use to hold the weights, and the caps are a good fit in which the weights aren't going to roll out. We had to shorten the original length of the pipe to try it out in the frame. Next time, we'll have to decide on how many weights we're going to use, and see if we need to shorten the current length of the pipe. In addition to finding something that's firm enough to hold the top PVC pipe to the swinging arm, so that the swinging arm doesn't move side to side when it's launching the soccer ball.

                       

            

3/13/14 Trebuchet- Gunawork, Nathan, Jackson

This Thursday, we started out by inserting the swinging arm into the PVC pipe, and made sure that it was a good fit to the frame. Since it was, we moved on to figuring out where and how we were going to attach the weights. After picking a spot parallel to the other circle at the top, we made a circular hole that will be holding the weights. Now we need to get the right type of cap that'll support the weights when its attached to the swinging arm's circular hole at the bottom. 

Catapult

So today we added a support beam to the middle of the frame of the catapult. It goes across the diagonal of the square that is the frame, making two triangle shapes that will create stability for our structure overall. In the next couple of weeks we have to add clamps for stability where the frame connects to the base, add an arm, and attach bungee cords.