The 1-step eco-safe hydro/pressure-powered bottle rocket with no cost!

Picture of the 1-step eco-safe hydro/pressure-powered bottle rocket with no cost!
i came up with this idea after my dad told me to leave my real bottlerockets alone and i got bored. so... vuala!

Step 1: Tools

Picture of tools
1 bike needle
1 bike pump
infinite plastic bottles
that's all!!!
Dumchicken3 years ago
water cannot be presurized
You don't fill it with water, just add between 1/4 and 1/3 of the bottle's capacity.

If you wanna know why it works, become a physicist or read this wiki.
dacker7 years ago
That's an inflating needle for sports balls, not a "bike needle". I don't know how you could use one on a bike.... :-)
I suppose that you could use it to let the air out of the tires... it's about the right size to depress that little pin.
That would make it an anti-bike needle! (LOL)
wrentchhead (author)  dacker7 years ago
ty dacker... i feel dumb now,lol.
uguy7 years ago
I'm sorry, but where is the hydro "electric" aspect of this rocket
zjharva uguy7 years ago
yeah thats what i thought of when i saw it!
AndyGadget7 years ago
This is known in my household as the 'John Noakes Rocket' - Blue Peter, circa 1970. It's one of those 'toys' which has stood the test of time. Try it with a washing-up liquid bottle (with the small nozzle) with around two inches of water inside. (Sticky back plastic is optional #;¬)