What Happens if i make it with a smaller materials?

For to save money i could to make it with cheaper material like: to use a 600 ml bottle in place of 3 lt bottle, respect the diameters tube but to use an 1/6 part and size of the original tutorial.

The proyect will work fine too or i have to calculate and to use stronger materials?

just a question, good night!

mikeasaurus22 days ago

I think the bottle tops would be the same, so would fit into this apparatus. As far as performance, the less volume in the bottle the less energy that can be transferred to the rocket when stomped.

Your results may differ, so the only way to know is to try it out for yourself! :)