This is for a science project. It has to be able to lift a golf ball at least 30cm high, similar to a mechanic‘s car lift.Our teacher said we could look online for ideas, so I don‘t think this is cheating ;) I have to build it, so it can‘t be too expensive, and I need an answer probably within 3-4 days at the most. THANKS!
if you take an old hand operated tire pump, one of the tall ones not the foot pump kind. You can use it pretty much as is. you would have to remove the checkvalve from the outlet, so that you could push pressure back in and it would then push the rod with handle back up. then you need to connect it with a hose to a much smaller pump. a tank would be needed to hold extra fluid when it is in the down position.
