7 replies to this topic

[schoute1587]

Here's my design for my first homemade. After reading Inside Delta Force I really wanted to make a long range rifle. I've only got the design(sorry). So as soon as I go to Lowes I can pick up the pieces and assemble it. Because I only have the design I don't have exact measurements on the pvc and what not.
hope thats better

Edited by schoute1587, 03 May 2006 - 04:30 PM.

[puggy]

The pic is to small.

[GeneralPrimevil]

Abotu that pic: you saved it as a JPEG and made it in MS Paint. Not modified it in paint, made it in Paint from scratch. So, as a tip from one user to the next, save those files as .png, not .jpg. I find it much more helpful. That and the full size image is hosted, not a thumbnailish image. No, you can not resize it. You have to open up Paint and resave it (File -> Save As) as a .png, then re-host it.

From what I can tell from that image you posted, it is a tank, with a pump, and a valve, attached to the barrel, in that order. The valve is something, perhaps a hand-actuated ball valve?

What did you want from that design? Distance? Accuracy? Both? Anything else (and the previous) also depend on the dart.

[Dr Nerf]

If you want greater range, there are a couple things that you could do. From your design, it looks like you are using a ball valve, which is the worst valve choice for range. Ball valves open slowly, and the faster that the valve opens, the better the range is because more air would be released faster. If you can, try to get a solenoid or make a homemade valve, you will definitely notice a difference.

As for your basic design, it looks good. You probably shouldn't worry about PVC sizes if there is no need to. For something fairly simple like this, you can go in the store and arrange the PVC pieces and "design" it in the store. It you want the gun to be a fair size, I would recommend 1 inch or 1.5 inch PVC for the pressure chamber. It seems that most people think that the best barrel material is brass, but 1/2 inch schedule 80 PVC and copper pipe work well too.

[davidbowie]

Is the "PVC barrel extension" act as a barrel, or is it just for appearance, such as in the double shot?

[schoute1587]

It acts as a barrel for improved accuracy.

[davidbowie]

Aren't you using micros?

If you are, you would be MUCH better off with a barrel that actually fits the darts. Even if it was shorter than the PVC one you were planning on, you would get a lot more range, with good accuracy.

Accuracy isn't really so much a gun issue. I find it's more in the darts and the hands. Besides, you're using (as far as I can tell) a ball valve. The tiny benefit of an oversized barrel extension would be canceled out by the jerk you give it by flipping the valve.

[blinkycc13]

I am confused. Do you plan on the air tank being the stock? As far as the barrel goes, will the pvc part be the same size? If that is the case, why not just use all brass, instead of both? Or will micros go in the brass, and the pvc just fit the dart's collar? I do not think that that would work well, but if you can get it to, props to you.