Airsoft Sniper Forum banner
1 - 9 of 9 Posts

·
Registered
Joined
·
807 Posts
Discussion Starter · #1 ·
Ok guys, heres the deal. I have conceptually designed an HPA rig (chamber, hop up, magazine feed etc.) that (I believe) would allow independent adjusting of the FPS and the ROF. The only thing that is keeping me from making solid drawings is that I don't know what body to put it in. I considered gutting an AEG, but that would pose too many issues since I am planning to integrate the hop up.

The parameters are this:
1. Relatively simple manufacture. (I'll probably be building this in my garage, I can handle wood working, but I'd like to limit intense metal work since the time I'll have around lathes and mills etc. will be very limited, although I have been considering building a vacuum table for sheet forming...)

2. The system will be capable of semi, full auto, so I'd like to model after a firearm that has those capabilities as well, for the sake of consistency.

3. I would like to use existing AEG magazines, I wouldn't mind modifying them to be shorter etc. but I don't want to have to design and build each mag to fid the gun. The only exception would be if there is one that has an internal box mag, then I could just build an internal magazine.

4. Personal preferences, I like bull pups, for size and maneuverability. With this engine in the gun it would be conceivable that it could be easily used for CQB as well as sniping fairly easily, so it would be awesome if I could design around that as well.

For reference here are some that I have considered and why I've moved away from them:

DTA SRS Covert:

DQd because it is a bolt action, and the "shotgun" feature that would be nice on an AR wouldn't be possible with this engin set up.

Barrett M95:

DQd because I laugh at people that bring these to games thinking that they are better than my ASR

Dragunov SVU:

DQd because its a little too complex

So I began to look at somewhat compact conventional rifles:

VSS:

Still debating on this one, barrel length might be short though.

So thats pretty much where I'm at. I'm just hoping that someone on here knows of some obscure awesome gun that might work that I haven't heard of yet. Thanks!
 

·
Registered
Joined
·
250 Posts
Yep, I can relate. The body took me almost 9 months to decide on. In my case I designed my parts then trued to come up with a unique design. I wound up with a tube gun after many months with a previous design. The reason is the body can be expensive to machine and then you have to gun drill which is spendy. In your case I believe you can buy the commercial chassis and use that. I could not being that I am dead set on springs for several reasons. Then again that SRS is $2500 for the chassis if I recall. I looked into way back when. At that price it is cheaper to mill your own or have a machine shop do it.

Here is a custom one a guy had milled, it does not have the barrel mound though. Good luck!
 

·
Registered
Joined
·
250 Posts
I'd go for minimal. Get the function working then adjust the form. Reduce complexity for a first go, focus on function not form. The function is the hard part. I vote for stripped PWD MR30.


I would say do not do what others do, like bolt a Tanaka on a square tube and call it "fabricated", then maybe bend a strip of metal can call it a trigger guard.

If you are going to be a bear be a grizzly. :)
 

·
Registered
Joined
·
250 Posts
Ha ha ahhh yesssss......



Have you thought of going original? I can maybe help with making of parts or a part so you can have one in hand to get going. If I can find time. I can talk design with you but I am not a gas guy so I may be limited on that aspect.

I found one I got one part i hand that I decided on, the spring guide in my case, it all became ore concrete. Not doing something is a good way to burn out.

Hell I have some ar15 triggers I can send you. Hey, your first part! pm me if interested or want my number.

Look at using an AR15 trigger too.
 

·
Registered
Joined
·
807 Posts
Discussion Starter · #7 ·
lol, glad to see we are on the same page. Thanks for the offer. Im going to see what I can sketch up in the next week or so and see what a minimalistic design would look like for me and see if I like it or not. The more I think about it the more I am thinking that I like the idea of using 1911 magazines... yet like everything else there will be advantages and draw backs to pistol mags v. AEG mags in my set up...

To be honest though, conventional hop ups bug the shit out of me. And after reading that you designed your own, I'm tempted to see what I can come up with...
 

·
Registered
Joined
·
250 Posts
It has all kinds of problems but to be honest it can be improves quite a bit. While l can not say what I came up with I can say I came up with 4 different designs. Bucking is fine and makes auto feeding easy although it can be improved. Think big ass thick bucking for starters. I would start with super sizing the thickness and length over the barrel to seal better. But then you have to make molds and cast them and you can the have size issues trying to shoe horn it into an existing design etc etc.

There are other ways I think, that is the rethink part. Think through it.

Step 1, CLEARLY define an objective.

An objective of yet another gun designed the same way other guns are is just another same old gun that looks different. The only thing you do is then change the aesthetics. If that is your goal, your golden. If you want a gun that is "better" define "better". Then design the physics around that principle or objective.


Use CAD or any 2D drawing program to help visualize. Google sketch is fine even.

Good luck!
 

·
Registered
Joined
·
807 Posts
Discussion Starter · #9 ·
I have been wanting to design something more along the lines of the G-Hop, yet one that would be able to be effective beyond 350 FPS for some added range. I have been considering experimenting with climbing shoe rubber (another passion of mine), since scraps are free and they come in all kinds of thicknesses and range from hard to very sticky.
 
1 - 9 of 9 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top