Q&A for How to Make a Rocket

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Question

Is it better to use the rocket with water or air?

Community Answer

If you're using a 2-liter bottle, filling it about halfway with water and then pressurizing with air will cause it to go the highest.

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Question

Will a regular water bottle work?

Community Answer

A regular bottle will work, but you have to adjust the size of the other parts.

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Question

Is there anything to replace the gas chamber?

Community Answer

Yes, you could use a air tank or a helium air tank, but both are quite expensive.

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Question

If I make cuts near the opening of the bottle, will that make the bottle go higher?

Community Answer

Actually it would make the bottle not go at all. If there is an opening in the bottle, the pressure won't be able to build up and the rocket won't launch.

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Question

Can my nose cone be pointed?

Community Answer

Yes, just try not to add too much extra weight, as that can weigh the rocket down, and then it won't go as high.

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Question

Where can I get a bike pump?

Community Answer

A local bike store or on Trade Me or eBay. They are very cheap. They are not only helpful for this but for lots of other things, like blowing up balloons.

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