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Registered Member #3023
Joined: Thu Jul 22 2010, 05:50AM
Location: North Plainfield, NJ
Posts: 1
I have had an idea bouncing around in my head now for a couple of years but have not the experience or the knowledge to know if it is even possible. I also don't seem to have any friends with any knowledge of how a coil gun works to even make an educated guess as to whether or not my idea is plausible.
I am an avid nerfer (person that modifies Hasbro's Nerf brand blasters and other companies foam shooters to fire homemade darts further and faster than their stock design was meant to) and I have been trying to come up with a new propulsion system, but more of a hybrid of both technologies. Generally, after we remove any air restrictors, we either add to the propulsion of the blaster, replace it with something stronger, or make our own propulsion system. The propulsion of the dart is done with a spring/plunger assembly (though more recently with a reverse plunger system where the plunger tube moves and not the rod), an air bladder that is filled via a pumping mechanism, manual powered push-pull systems, or with the use of a set of flywheels that throw the dart. They now even have motorized blasters that operate a plunger system. Once we modify the propulsion, the last thing we do is reinforce the inside to accommodate the new forces, add a new barrel comprised of our personal choice of materials, make our darts and, in the end, we now have a blaster that shoots 2-3 times further than it did unmodified.
The darts are made of extruded polyethylene foam backer rod with either a steel washer/felt pad combination (the washer is for the weight and the pad is for a sort of cushion for when it hits someone to cause less pain), but more commonly it is made of the foam with a lead weight embedded in one side and covered with a dome of hot glue. They are also made at times from the stock darts that come with the blasters (these darts are made of the same foam except that it is tubular and not solid), but the original tips are removed and replaced with either of the two tip combination listed here.
My idea was to take the stock system of a spring-powered blaster and add to it a single stage induction coil gun system to accelerate the dart further. Leaving the blaster in its stock form is to add the element of stealth (once the air restrictors are removed, the spring blasters tend to get a lot louder, giving away the user's position) as well as to use it as the pusher to send the projectile through the coil section. The big issue I have, other than a lack of knowledge of how to do this, is how to reduce the effective firing range of the blaster. From what I have understood from my reading, a coil gun can shoot a shaped nail head rather far, but I have never seen any distance or velocity measurements.
If anyone needs pictures of what I am working with, please let me know. Currently in the hobby, the players with the edge are making their own spring-powered blasters that have a high rate of fire. I am simply trying to produce my own enhancement to the hobby and to the current technology to give myself an edge.
Just for the record. Yes, I am talking about modifying a toy gun to become a type of coil gun No, I am not a child. I am just a big kid at heart. Probably why my wife married me.
Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
There are two main problems with your idea. 1. The projectile must be mainly metal. So you would end up with a normal gun and not a toy gun. (You could let the coil operate the plunger but then it is more of a solenoid than a coil gun.) 2. The most common coil guns are very inefficient and not suited for practical use, they better suited as a tool for learning.
It is probably possible to make a launcher that is practical but it might be quite complicated and possibly expensive. It all depends on the mass and required velocity of the projectile.
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Question of a theory
