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Basically, you get a piece of brass that fits in side your barrel ( I use CPVC) and put aslice in the end of it about 1/4 of an inch long. After that, you fold out the area near the slice just a few degrees to make a sharp corner. You will have to do some experimenting to find out how much you bend out the brass, as it depends on barrel type. Next is the tricky bit, take the brass, and heat it up on a gas stove until your flame starts to turn green. (This part is dangerous, make sure you wear heat proof gloves when holding the barrel and the brass that you can get off if the heat starts to get through. Also, like I need to tell you guys this, but try not to burn your house down, and immediately after using the heated metal, dunk it in a bucket of water to cool it down). After the metal is heated, jam it down the barrel while twisting it at a constant rate. Then pull it out while making sure that the threads go the same way. Repeat this afew times to get the barrel sufficiently rifled.
The method is crude, yet efffective. I don't know if it's just me, but I feel that my shots go straighter with barrels treated this way; however, I don't have any data to back this up.
I am not trying to criticize you, or doubt your design. I would just like to know how you made something that powerful.
And as for shooting them out of a gun? Well sure, let's shoot burning chunks of chemicals at each other. I think it would be cool to do, but unfortunately, it's just too dangerous.
We used a tape measure and chalk to mark out ten foot increments on a straight, flat section of my street. We then wrote the accompanying numbers next to the marks.
This took us only about two to three minutes to do. This method was very simple, and gave us very accurate measurements. It's really basic, but I figured I'd post about it in an attempt to help reduce the amount of inaccuracy pertaining to gun ranges.
OMC I'll just send the money for the foam with some one else, probably a kid named max. Do you have a scale that you can weigh it on? This way I can compare the two weights to check whether some idiiot stole any of it on the car ride back.
Now I have some time. Ok, so here is a link to where the splitfire's valves are explained:
scroll about 2/3 the way down the page, the post is by falcon.
What I am saying, is you need to find a way to either push the little black rubber seals back into position, or to lubricate them with something to make them seal better. I'm afraid that to do this, you're on your own, as I was not able to fix mine despite numerous attempts.
If this post makes no sense due to a lack of pictures, or horrible use of commas, just tell me.
If we bring our own weapons? every body is going to bring their own weapons. Also, the vast majority of people use home made darts. Are you absolutely sure that home made darts not allowed?
If you bring your own wepons dont bring stephons.
With that said, using a paintball park sounds pretty cool. I will talk to the other members of our clan, but it sounds a little far away for us.
Here is the plunger design I was trying to describe two days ago:
Get a small crappy little pump like this:
Rip the check valve off of the front of it, and put a spring on the inside after taking the back part off.
After that, put it back together and use it for whatever you want. The seal between the punger and the tube is really good. I don't know what to do with mine, but I'm sure you people could come up with something.
Back on topic, I do not think that it is practically possible to make a nerf gun with real kick back. The only toy gun that I have seen with considerate push back, is a CPS 3200 supersoaker. That thing was so powerful that on its highest setting, it could push against you with considerable force (back when I was in sixth grade, that is).
That has been extensively discussed (maybe too extensively). The general consensus was that it was not possible. You can use the search function to find the thread.
so, as a follow up question, would it be possible/feasable to rifle a barrel? That would give a lot more accuracy than a less snug barrel that the dart smacks around on would.