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Member Since 06 May 2004
Offline Last Active Mar 31 2007 05:28 PM

Topics I've Started

Compact Far

02 April 2006 - 06:48 PM

This design theoretically results in a nerf gun that is reduced in length by the plunger stroke.

Instead of having the plunger tube part of the bolt, which means that the plunger must be at least as long as the piston stroke just in front of the catch, I am using the gun body as the plunger tube. The bolt seals in the body with an O-ring and is worked back and forth by a metal rod the extends over the camber and barrel to a slot above the barrel. The bolt is only about 3 1/2 inches long and is made of a 1/2" PVC endcap and 3 layers of brass.

So far I have made the bold, plunger, chamber/barrel, magazine well, catch/trigger mechanism, and whatever you want to call the main body part thing.
Not bad for one day.
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I still have to make the pump mechanism and the magazine, but I need a mag spring. Right now I am leaning toward a constant force spring from McMaster-Carr, but I'm open to suggestions.

Magnum Pistol

12 February 2006 - 04:35 PM

I built this after getting sidetracked from building my FAR(stupid 30 year old dremel).
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The body is 1" 200 psi pvc and the the barrel is 2'' of 1/2" cpvc. The plunger is cpvc and has a 1/2" pvc encap with an O-ring as the seal. It is powered by two 4" 28lbs compression springs that I found at Home Depot and the plunger stroke is about 4.5". I haven't tested the range yet since it's literally a blizzard outside but it sends micro Stefans at least 20ft with almost no drop from a straight shot.
Questions? Comments? Annoying responses that don't help anyone?

New Use For Ball Valves

25 May 2004 - 03:25 PM

I was thinking of using a tension sping to open a ball valve quikly. Please let me know what you think and give me some latch ideas.

Homemade Ball Valve Gun

14 May 2004 - 04:11 PM

I made a homemade ball valve gun but it only shoots 30'. I used 80psi with a two foot pvc barrel and mega stefans.