SRv2 with mods
surgical tubing used on the SRv2
purchase tubing at http://www.reefscuba.com/surgical_tubing.htm
3/16" 3/16" OD 1/16" ID 1/16" Wall Amber RS187062-RA10 10' thru 30' $8.00/10 ft
assault pistol w/ removable mag
cool but not any good

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and by the way, ur SR-v1 rocks dude!
No way man. Impossible.
LoLz!!!!!!!!!!!!!!!!1!!!!!!!!!!!!!!!11!!!!!!!!!!!!!!!!!!111
That means it's not possible to do it with just knex.
-HD
I mean, I've got nothing else to do lol. And it's half term where I am, so I got plenty of time.
What was the plan again?
A turret gun with a grenade launcher? And a retractable stock perhaps?
If so, here is what I would think:
We make a prototype then we advance from there, and in the end, whoever comes up with the final, working product, gets to post it?
more stages means more energy lost=less power.
the only reason this has more power is because of speed. when the grey rod hits the white rod, some power is lost, the the remaining power makes the white rod move faster then the grey rod(since it is lighter, and smaller). since it is moving faster, more energy is transferred to the ammo.