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GCR rifle

Unread postPosted: Mon May 01, 2006 8:29 pm
Author: Holland_Charley
Hi im building a GCR means GAS Combustion rifle, i wanted a more realistic design. :twisted: :twisted:

At the end ill give it and black paintjob.

- Glock grip
- Volume Combustion Chamber: 415632,7081 mm3
- Barrel diameter 11,4 mm
- Barrel size 102.0703453 mm2
- 3-9 x 40 endenburg scope
- Fuel propane or butane still dont know.

Greetz Charley 8)

Credits:

Charlie E
Wouter H
Number 66

WC weapon industries TM :) lol wouter

scope

Unread postPosted: Mon May 01, 2006 8:31 pm
Author: Holland_Charley
combustion chamber

Unread postPosted: Mon May 01, 2006 8:35 pm
Author: saladtossser
clean, smooth, sharp, spiffy
thats awesome! the handle, sight and stock are great!
is that handle from a toy gun? what's igniting it?

Unread postPosted: Mon May 01, 2006 8:46 pm
Author: Holland_Charley
The glock grip is from an old bb gun i wasted, i use an homemade iginitor wich works the same as an car bobine, ignitor.

Unread postPosted: Tue May 02, 2006 12:43 am
Author: Rambo
To be honest, I think that it have very bad power to weight ratio.I sugest that you use a little more powerfull propelents in that tick chamber.

Unread postPosted: Tue May 02, 2006 5:54 am
Author: Holland_Charley
i dont understand you, you mean the gun is 2 heavy comparing 2 the power?

I think if u use 1:1 Hydro Oxygen gas
Or special mixtures of propane/butane with pure oxygen i think this weapon will shoot far. Because of normal air is just 20% oxygen and the resting 80% nitrogen. So in in a combustion chamber with normal air you can just make 40% max 2 a explosive mixture. With pure oxygen you can make 100% explosive mixture.

I hope it works fine with normal air but if it dont,,,, im going 2 use pure oxygen.

:twisted: :twisted: :twisted: :twisted: :twisted:

Unread postPosted: Tue May 02, 2006 6:01 am
Author: rna_duelers
That is very nice,is it a rifled barrel?Because if it isnt the scope wouldnt have much use unless using some type of darts where used as amo because of the flight path of the projectile.

Any chance of some damage pics,and how far does it shoot on average?What are the shells used for?ammunition perhaps?And what type of handgun in your first pic?

combustion chamber + compressor

Unread postPosted: Tue May 02, 2006 11:54 am
Author: Holland_Charley
on the background 2 of my air rifles :P :twisted:

+ combustion chamber + compressor

Unread postPosted: Tue May 02, 2006 12:05 pm
Author: Rambo
Don't use pure O2 at the first time.Use it with a remote ignition and then use a little less O2 rich mix when holding it with hand.About the power to weight ratio here is a link to very light gun with 0,5l metal chamber and bigger barrel http://www.spudfiles.com/forums/viewtopic.php?t=1442&

Unread postPosted: Tue May 02, 2006 2:05 pm
Author: Holland_Charley
Damn i tried serval times, just 1 lucky shot the bullet came somewhere 50 meters against a wall. Is very difficult getting the right mix into a tiny combustion chamber. :(

Unread postPosted: Tue May 02, 2006 4:17 pm
Author: nervjiggy
Butane is a bastard gas.

Unread postPosted: Wed May 03, 2006 12:25 am
Author: Rambo
Why?I have no problems with it.I don't know where to get propane.

Unread postPosted: Wed May 03, 2006 3:54 am
Author: Benny
really nice, do you use them .38 shells as ammo? :?

Unread postPosted: Wed May 03, 2006 4:21 am
Author: Holland_Charley
I always used Hair Spray for my patato rifle cus it contains butane. How long do you guys spray in a tiny combustion chamber? But at the moment i only got deodorant in house. No .445 metal balls or patato/apple pieces.

But i got an second problem my bbq ignitor wich i use for the moment does not sprak always :?

greets

Unread postPosted: Wed May 03, 2006 4:53 am
Author: Benny
then shorten the spark gap.