Not going to try to build anything. He has to do something that can be measured and graphed. His project is going to try to measure the force ice can create. We are going to fill the bottom half of the cylinder with water and the top half with hydraulic fluid. We'll plug the top port with a pressure gauge and just plug the bottom port. Then freeze it and see what kind of pressure it builds(should be pretty high). It probably won't work, it will porbably just bust the cylinder(which will be kinda cool anyway). It dosn't have to work to get a good grade, if it doesn't you just have to explain why.
So the hydraulic cylinder I need needs to be powered up and down so one from like a car setup won't work. Off to the tractor dealer.