Knex Rocket

Introduction: Knex Rocket

About: I have moved on to better things...aka YouTube. So I will most likely not reply to any comments, sorry for any inconvienience. If you have important questions, you can go to my youtube channel (MagmaRhino) and…

This is a Knex Rocket I built and it shoots about 30 feet up. Do not ask me to publish this instructable because I already took it apart. Please rate and comment. Credit for the Trigger goes to THE REAPER.

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    15 Comments

    0
    Oblivitus
    Oblivitus

    12 years ago on Introduction

    Doesn't it damage the pieces when fired up?

    0
    Oblivitus
    Oblivitus

    Reply 12 years ago on Introduction

    Try making the rocket denser and smoother around the edges, that will stabilize the structure and prevent fractures. Also try Duct tape on that red rod.

    0
    Speedmite
    Speedmite

    Reply 12 years ago on Introduction

    Denser=Heavyer=less height.

    Lauch it at an angle so it doesnt land on the stick.

    0
    Oblivitus
    Oblivitus

    Reply 12 years ago on Introduction

    More mass can actually improve range depending on how much tension the design can hold.

    0
    Speedmite
    Speedmite

    Reply 12 years ago on Introduction

    Its knex. Any thing that holds too much strain collapses something.

    0
    Oblivitus
    Oblivitus

    Reply 12 years ago on Introduction

    True, but you did not refute my last comment.

    0
    Speedmite
    Speedmite

    Reply 12 years ago on Introduction

    I did. I highlight the"depending on how much tension the design can hold." part. With this design, It seems that the light weight of the rocket thing is Ideal for launching. And I just did a science experiment on which projectiles went farther when shot from a potato cannon, and I weighed all the projectiles, and the lightest ones went the farthest.

    0
    shieldsam
    shieldsam

    Reply 10 years ago on Introduction

    lighter = less mass, and less mass = more wind resistance. its why you can't throw a feather.

    0
    shieldsam
    shieldsam

    Reply 10 years ago on Introduction

    its all about momentum. thats why you can throw say a 500g rock farther than a 200g rock .