This is my new cannon that fires roughly 20-30 feet depending on what elastic band you have handy. This is quite an easy cannon to make hope you enjoy.
Knex rules :)
Please note that i do not take any responsibility for misuse or stupidity with this cannon.
Step 1: The Basics
14 red connectors
1 elastic band
1 grey clip
3 red rods
2 blue rings (speed demons)
3 white rods
Step 2: The Butt of the Cannon
Step 3: Adding Half the Trigger and the Barrell
Step 4: The Rest of the Trigger and the Barrell
Make sure that it is on the end of the rod!!
Step 5: The Other Half of the Gun
Step 6: The Ram
This is a bit fiddly so please take time but it is almost indestructable.
All you need to do is take 3 red connectors and 2 white rods and assemble like the picture. But make sure that you conect them to a red rod.
Step 7: Adding the Elastic Band
To get the red connector back on you should pull the ram back until it locks in place and the click it on then release the ram.
To fire the cannon pull back the ram and slot any rod (in my opinion the best are the yellow but the shorter the better because they will go further) in the end of it and pull the trigger away from the cannon and hey presto!
Now you're ready to go......Enjoy