Introduction: Knex Rocket That Really Launches
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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 that actually launches using 4 large rubber bands. It is very simple and uses few pieces. It flies about 20 ft. Watch this video for proof. Please rate. Check out my new cannon.
Piece count (based on original colors)
Rods
white-8
yellow-12
red-28(n.b. mine are all green)
gray-10
Connectors
white snowflake-3
blue 3D-5
purple 3D-29
gray 1 slot-8
gray 2 slot-4
Other
4 large rubber bands
TOTAL-111
Attachments
Step 1: Rocket
This is the projectile shot out of the base.
Step 2: Base
The Rocket shoots out of this.
Step 3: Adding the Rubber Bands
You place each of the rubber bands around the white peg at the top. Then you add the rocket. Finally you pull down the rocket on to the rod and release it. Watch this cool video to see the launch.
Attachments
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29 Comments
9 years ago on Introduction
i made it and it goes 60 feet in the air but i modified the structure
11 years ago on Step 2
you could make the design better good try i guess
11 years ago on Step 2
you should design a knex greanade
11 years ago on Step 2
thanks for the help
12 years ago on Introduction
i built this and i loved it so i thought i would improve it so i made a rocket three foot six and it didnt work but i made other big ones that were big and they worked
12 years ago on Introduction
cool
12 years ago on Introduction
could I possibly make it taller and tie rubberbands together to make it go higher? or would that make it collapse??
13 years ago on Introduction
Isn't this just a vertical catapult?
Reply 13 years ago on Introduction
Maybe so, but aren't most K'Nex "guns" really just catapults as well? (Nice-build, number-boy.)
Reply 13 years ago on Introduction
yes but mostly just cannons and snipers are catapults just so you know
Reply 13 years ago on Introduction
LOL
Reply 13 years ago on Introduction
acctually, no they are not. they are crossbows to an extent. a catapult uses a slingshot mechanism or a swinging arm linked to a weight (trebuchet). Knex guns are crossbows, in that they use a blocker (trigger) to hold back a bolt which holds a projectile in front of it. when the trigger is pulled, the potential energy is released throwing the projectile forward.
Reply 13 years ago on Introduction
Oh!
So the "block trigger" that certain K'NEXers moan about is simply something that blocks the movement of the projectile? I just learned something new about K'NEX...
However, true crossbow triggers retain the string, and the elastic PE in all bows (cross, long, compound and ballistae) is stored in the bending of the arms, nor the elasticity of the string (which is actually inelastic).
Reply 13 years ago on Introduction
Yes - that is a block trigger, and that is true...
Reply 13 years ago on Introduction
And the only true crossbow on this website is the one by Mepain called huge knex crossbow.
Reply 13 years ago on Introduction
yes thay are so dont be so annoying uguy
13 years ago on Introduction
did you know that you can put in the bischoff system so it can have a trigger :D
Reply 13 years ago on Introduction
or you could put the mec from the brickster LDS or i_a_c 's heavy cannon mec on it
Reply 13 years ago on Introduction
what is that? Could you post pics of it.
13 years ago on Introduction
built then turned it into a mortor 60FEET RANGE ON MINE!!!!!!!!