- 89,766
- Rule 12
- GTP_Famine
wowitfothThank you, like I said "Boys will be Boy's!
And don't you just wish you'd edited out the apostrophes both times?
A 2 litre "pop" bottle forms the basis of the RockIt set. Put some fins on an upside down 2 litre bottle, to make it look like a V2 and scare local old people. Fill it to 1/3rd full with water. Invert and start pumping air in (from about 30 feet away, for preference). Watch as bottle rises to 50-100 feet.
A 15 litre water-cooler bottle can reach 200-300 feet.