If you spend about 4 seconds searching youtube you'll find this..
This is good inspiration for the kids although it has one small typed vernacular at the top of the comments... welcome to youtube... they still haven't managed the good-natured kindness and sensibility of Instructables.
I started this project because a student suggested it. He showed me a few clips on the web which inspired me to try it. This project is SO basic that it is really quite deceptive in its trickiness so i'll go over a few stumbling blocks I encountered and the ways to get around them.
The best part of this project is that it encourages kids to THINK about how a project will fit together and work. The end result is a project that is REALLY FUN. Students were lining up to try the prototype. Once the first student built one he was helping his friends in my class design and build others.
-Students will learn to apply basic design to solve a problem
-Basic measurement of spring compression to discover spring rate will be learned and applied in the project
-Students will learn to Measure, Cut, Grind and Weld steel to create an interesting project.
Tools and Materials:
-I usually offer alternatives in my Instructables to some of the big and expensive tools but in this project you really will need a good welder. I use a MIG with the kids.
-Angle grinder with basic grinding disc
-Hack saw or good horizontal metal band-saw
-Files and finishing tools
-Drill press with assorted drills, centerpunches and clamps.
Materials depend on what you have on hand...
-A whole bunch of big springs (i have ideas for you to get them free or cheap...)
-Steel tubing that matches the springs.
-Steel tubing for bars and foot pegs.
-5/16 bolt about 3" long, nut and washer
Take a quick look over the instructable and try it!
I think it would be an excellent addition to any curriculum.