little help needed

Skatedude

lo
I've been having a bit a trouble with 2 of my gbb pistols

i've got this
http://cgi.ebay.com/WE-HI-CAPA-5-1-FULL-METAL-GBB-Airsoft-Pistol-TYPE-K_W0QQitemZ270081268093QQihZ017QQcategoryZ31685QQtcZphotoQQcmdZViewItem

and this
http://www.airsoftgi.com/product_info.php?products_id=1729

and in both cases i can only shoot off about half a magazine b4 the gas pretty much runs out,
I've used Abbey Predator 134a gas and Ultra Air high power gas, but have the same problem with both, i'm using them indoors so temperture should not b an issue and i am filling the mags to capacity.(yes i do hold the mags upside down for filling)
I have no problems with my tm deagle which works beautifully and will fire off about 2 full mags per charge of gas.
Any ideas??

o1s1n

The first batch of the WE 1911 were meant to have some fault. I cant remember what it was. But it resulted in bad gas consumption. I think it could have been on arniesairsoft. I read it a couple of months ago.

tvnutz

I am having a similar problem. I just got the gas the other day,and honestly I do think I may be filling it wrong,the gas doesn't last too long. But Ill work on it.

However the other problem is when I am shooting,after a few shots,the barrell locks about half way back and i cant fire. I have to pull the barrell back all the way to start up again. Then every now and then I shoot,gas is released and blowback occurs but no bb's come out,despite there being plenty in the mag. do I need some sort of lubricant for the barrell to stop it getting stuck half way?

Skatedude

it should not be sticking halfway, but it is recommended to use silicon oil on the slide, also some people polish the slide rails to reduce the friction further.
Does the slide feel smooth when you are cocking it or does it feel like its grinding a bit? and i take it that its not locking due to catch on the side engaging b4 all the bb's have been fired
I'm planning to polish the slide on mine as soon as i get chance to disasemble the gun to see if it helps me.

o1s1n

It's a similar problem I was having with my mac. It's not blowing back properly. Could be that he's using bad gas.
What brand did you get? I was told to stay away from ICS.

It may just need a good lubing. Or, it could in fact be over lubed. As skatedude said, it may just be a friction problem.

You could have damaged O rings on the mag. Do you empty the gas in the mag by pressing the gas release on it? This can freeze the rings and cause them to break. You're actually meant to empty the gas by shooting it all out.

Simple way of figuring out if this is the problem is, well, by trying another mag.

Gas blow backs can have quite a lot of things that can go wrong with them. It's quite difficult to actually figure out what the problem is. I'm still trying with mine.

Chances are, you'll get it working properly again and won't know how you did it.

Skatedude

i already have 2 mags for the 1911, but they are small and dont hold a lot of gas, i'm going to order more mags for my hi capa and mabey get 1 or 2 of the co2 hicap mags as well

o1s1n

Wait, you have a hi capa? read this;

When I got my WE 1911 I was having similar problems as those Billy210 reports. The first few shots on a warm mag would be fine, but the gun would rapidly cool and start venting large amounts of gas from the ejection port and the gaps between slide and the frame with every shot. While I could get 15 shots out of a single charge of gas if I was very careful, the last few would not cycle the slide properly and it would not lock back when the gun was empty. If I really rapid fired it, I could empty the gas in ten shots.


The bad news is, the gun simply wasn't skirmishable out of the box. Lubrication helped a little, but it went back to its old ways inside a few shots.


The good news is, it's fixable.


I own a TM Hi-Capa which has more or less identical internals to the WE, so in the interests of science I swapped the WE's slide over onto the Hi-Capa's frame, charged up a magazine and let fly.


Result? 70 shots rapid fire in groups of five, with a pause of no more than a second or two between groups. The slide locked back until the 65th shot. This test was done by dry-firing the gun, so no pause to reload BB's. It would do this repeatably and reliably.


The conclusion I drew from that was that the top-slide was fine, a huge relief since most of the gas components live there. That left the frame and the mags... and I couldn't do much about the frame.


The mags really only have two components that could cause trouble, the output valve and the top seal. Pressing the button to vent the last whisps of gas in the mag I discovered that gas was venting through the button itself - can't be good. For the uninitiated, the gun's trigger mechanism presses this button every time you pull the trigger, so obviously gas was venting into the gun's interior. This not only wasted gas, it's probably contributing to the rapid cooling too.


Swapping the valve for a standard TM item out of a Hi-Capa mag gave me some small gains, but didn't solve the problem.


Examining the rubber top seals on the WE and TM mags revealed that the TM item stood fractionally prouder of the top of the mag than the WE seal did. Logically, this would make a better seal with the chamber in the top slide, so I swapped the seals over and bingo! One fixed gun.


It'll get 15+ strong shots off a charge in any conditions now, and in warmer weather I've had 30+ full-power shots off a single charge. The seals still should not be allowed to dry out completely or performance will suffer, but they don't need to be dripping wet either. A bit of maintenance gas now and then and a tiny (and I mean tiny)squirt of silicon when the seals look bone dry and the pistol now performs admirably.


As a side benefit, with Marui valves installed the pistol will now fire if you just cock the hammer - no need to rack the slide any more.


My guess is that Billy210 is right and poor quality control is to blame. Hopefully it's the seals that came with my gun and not the position of the components in the top slide, because this is a pricey fix - the best way I found to do it was to buy a new TM mag and swap the furniture over. With luck when spare mags become available in this country I won't have this problem with them too, but if they do at least I know how to fix it now.

o1s1n

Here's the page I took that from. There's a few reviews of the gun. Another person has a blowback problem too.

http://www.arniesairsoft.co.uk/reviewpost/showproduct.php/product/575/sort/2/cat/all/page/1

Skatedude

intresting, i do have a few spare hi-flow valves i got to repair one of my deagle mags so i'll swap that in and try it out, as for the top seal, i was thinking of running a very small bead of silicone around the rubber to make a better seal as its softer then the normal rubber,
I'll let you know how i get on,

I think my 1911 is a dodgy one, all the reviews say its very accurate, but mine seems to have a 4 to 6 inch spread at about 12 feet, much less acurate then my deagle or hi-capa, on one of the magazines fell apart after a week, the base snapped off, i'm sure i can glue it back but honestly i'm not that impressed by it, but it is cheap

o1s1n

Well as I've heard, there seemed to been bad quality control on the first manufacture run of the gun. Yours may have come from this. Shame really. I was quite interested in getting one myself. Seemed like an excellent deal for the price.

Skatedude

i've no idea what version build it was, but i got it from wolfarmouries, the other minor problem is that the 1911 is a bit small for me, i have big hands and the slide feels a bit skinny, but i am used to my deagle which feels about right