How to Make a Very Simple Knex Noise Maker

This is a very simple instructable of how to make a KNEX noisemaker. This is of my very own design. There was a lot of trail of error in trying to make this. I made a couple of complex ones that made very little noise. Then I thought why not make a simple loud one? That's what you'll be making today! Keep in mind the wheels may be substituted for another piece. If you have any ideas of what YOU want to see next, comment! Don't forget to follow me and like this instructable. Now have fun making this and annoying people!

You need the following:
-2 grey axle connectors
-2 little wheels (You may substitute)
-1 big wheel (You may substitute)
-1 yellow axle (other known as a rod)

The wheels in this instructable may be substituted but it works best with the specific wheels in this instructable. I wanted to give you all the best combination to make the best noise. Now, since your done gathering your materials, it's time to move on to the next step!

In this step, you take (ONE) of the grey connectors and your (ONE) yellow connector and attach them like so. (Please refer to the pictures to see where to attach)

This part may differ for different people. Some people may want to put the wheels in a different order or use different pieces. In the pictures you see I put them in several different orders to give you an idea. The order I am using is
-Small Wheel
-Big Wheel
-Small Wheel

Now using your last grey piece, secure it on the other end just like you did the first one. These grey pieces will not let the wheels fall off. Once your done with this step, move on to the next step to see how to hold and make some noise!

Hold it by one of the grey pieces. You want to hold it vertically so that the wheels fall to the bottom.

Now how to make some noise. All you have to do is push down with some force. Just a tiny bit though.

Now you done and ready to make some noise! Whenever I use this it hurts my ear! It gives off a nice solid tone of something smacking into something. That's what it does here. You push down so fast that the wheels don't move and instead slams into the grey piece. Now enjoy making your brothers, sisters, mom, dad, grandparents, and grand kids go nuts!

(Note: I am using a knex value tub and using a blanket as my surface.