G36C Woes
 

Hey there, just received a sorta-broken G36. I got the mechbox and motor working fine. Now it's shooting sometimes, sometimes not, and usually shotgunning BB's. Now I think this is either a problem with the Private Parts conversion magwell, the Pro-Win hopup, or the shitty hicap I'm using.

I already tried some silicone oil in the hopup, didn't do anything. I'm going to pick up a KA lowcap mag from TokyoSeven tonight and rule out the mag.

Ideas?

Sounds like a hopup problem. The unit isn't letting BBs through properly, and eventually enough BBs jam up and to force their way past the obstruction point.

I took a look at it. Is it possible there's not enough space between the nozzle and the hopup opening to let BB's through?

Shouldn't be, unless the Prowin is dimensionally off by a lot compared to a stock hopup chamber.

Pictures may help, just a minute.

The second picture is supposed to show how the nozzle is at or a little above horizontally across from the front edge of the hopup. Does that seem right?

http://i62.photobucket.com/albums/h1...k/IMG_2196.jpg

http://i62.photobucket.com/albums/h1...k/IMG_2197.jpg

I had similar problems with my kraken with a pro-win hop up, put the stock one back and its running great now. I heard bad things about the g36 pro wins too, if you have a spare one around try it out...

Shitty thing is I don't have a stock hopup. Anyone wanna trade for a Prowin!?

Another question, what the hell is the switch dealie on the top of the hopup (to the very right of the nozzle)?
It's sprung, and if you press on it, it presses a nub up on the outside top of the hopup but I don't have a clue what it does.

I dunno what it is but its there on a jg hopup

It is to prevent the bbs to be more than one in the chamber per cycle, and to make sure they don't end up in random places in the gun body (like behind the trigger, or under the selector lever)

Update: Seems to be shooting 1 BB at a time in semi now, but it's only chronying at about 100 FPS give or take (70-120). Help?

if you are using the hopup sleeve that came with the pro-win, replace it.
also it wouldne be a bad idea to replace the spring on that little ramp thing with a stiffer one (it will stop multiple feeds).

the opening on the hopup rubber is too narrow, so its only letting BBs through once the air pressure from the cylinder has enough force to push the BB through the hopup opening. once the BB does make it through, you already lost most of the air from the cylinder.

the pro-win hopup opening is so narrow it can have enough pressure to stop the nozzle from pushing the BB forward.

Well I also forgot that the mechbox is as dry as a 80-year old's vagina. So it maybe an issue with the piston not running smoothly, etc. I'll have to lube it and test. Also, the hopup rubber is "KM Reinforced Hop-Bucking 55 (AEG160N1)", so it's not the original.

Okay, problem most likely fixed, I just have to find the right screw.

Yeah, see those pictures? Theres a *HUGE* gap between the nozzle and the hopup, which is causing my feeding and FPS problems.

Just have to get the right screw and put it together. The hopup actually attaches to the mechbox.

hey styrak, can you post the pic of the hopup that you fixed? because i just read this thread and its a bit too late that my prowin hopup is already on its way, maybe i can do the same trick if i encounter the same problem... cheers

i had a problem like this wth my g36, i lubed up the hopup a bit and it fixed the issue

So how big should the gap be? Smaller than the bb because the nozzle pulls back and a bb goes up then the nozzle pushes the bb forward into position? ie half the bb is showing from the bottom view just before the bb is going to be shot?

No, you didn't have the same problem I'm pretty sure. The Pro-win hopup for the G36 attaches to the mechbox, and that was my problem.

No gap at all. The nozzle should be pushed all the way in.

My best guess is that this gun has a horrid Ancient Chinese curse...

You'll need some garlic, bat testicles and a high temperature boiler.

So in the first pic above, the pro win should be sitting flush against the mech box front? No wonder you were having bad fps and other problems. thanks for the info btw.

ALso curious to know if the pro win requires you to cut off a piece of the mag well like some other hopup systems say:
example http://store.matrixbb.com/servlet/-s...l-Metal/Detail


edit ok I answered both my questions lol
http://picstersairsoft.blogspot.com/...6-chamber.html

q1 yes
q2 no

Hehe, yeah......oh boy. No wonder I was having FPS problems. Huge air leak anyone?

Somebody slap me.

The only 'fix' that was needed was, don't cut up the screws that come with the hop-up. They're meant to screw the hop-up onto to the mechbox.

I know where you live.

hmm i just got my hopup today and just wondering why there is no screw in the plastic packaging? i just got a plain prowin hopup and a tag paper, is that suppose to be any screws??

and all i know that the screw you guys meant, is to attach to the hopup and the gearbox is testing the them without putting them into the receiver.... CMIIW

Hmmm

Just a quick question... isn't the barrel/hop-up assembly attached to the upper receiver??

And the mechbox attached to the lower???

Then how can you screw the thing on??????? Trough the fake bolt opening??

Yeah, that's the problem. I just finally decided to not screw it in. I just didnt attach it to the front assembly and used the barrel spring and let it sit there pushed against the mechbox. Did you guys read my other thread though? Can you take a picture of a normal G36 hopup and nozzle, so I can tell if there's the correct amount of space? My gun seems to be shooting with enough force now, but it's misfeeding. If the nozzle and hopup orientation is correct, then I'll know Pro-Win hopup + Private Parts magwell conversion = bad.

Sorry for the necro. So what was the result of the hop up? Screw it from the fake bolt cover?

I remember reading that the screw on option was for testing it attached to mechbox when outside your gun. Really its the spring on the outer barrel that will hold the hop up flush to the mechbox front.

I managed to install one screwd to the mechbox.

I had to split the body in two and swear for a good 2 hours just to close it.

BUT

I found that it works wonders when not screwed to the mechbox.
Also, Deepfire brass nozzle DO NOT WORK with it.

The solution for me was installing a regular G36 hopup, and getting regular G36 magwell.

Boring. :-)

Now thats exciting. I'm gonna give it a try on one of my Star G36s. i'll let you know the results....

I tried to get prowin hop up working in my G36 with no luck. Had better performance from JG hop up (just sad)

tommrow when i have time ill show up what a modded prowin g36 hop up looks like:) im lazy right now

http://img135.imageshack.us/img135/6...0021qk9.th.jpghttp://img135.imageshack.us/images/thpix.gif

http://img135.imageshack.us/img135/2...0022zu0.th.jpghttp://img135.imageshack.us/images/thpix.gif

http://img135.imageshack.us/img135/1...0024xy5.th.jpghttp://img135.imageshack.us/images/thpix.gif

http://img254.imageshack.us/img254/4...0027we6.th.jpghttp://img254.imageshack.us/images/thpix.gif


So as you can tell, for some gearboxes the hop up does require modification, but overall works great in my g36!

nice tip spa. On my part, what i did was replace the original screw on the front end of the gearbox with a grub screw from one of my suppressors. although after installing the prowin Hop up, i lost around 50 fps on my CA SL8-2. i think CA uses a different size/dimensions of air seal nozzle compared to TM/JG?

i use a Prometheus G36C air seal nozzle. And yes, TM and CA use different Nozzles in thier G36 series. The difference is that the TM one is just a simple nozzle but the CA has a rail, and has a T bar at the end that connects to the tappet plate so it does not roll (this is so the rail can glide in the chamber).

aside from the rail, are they of the same length? would a nozzle with rail be better compared to one that has none?

The rail is special for the CA hopup units and are not necessary for TM hop up units. The Prometheus nozzle for the CA is the same size as a TM one.

If you wanted to shave off the rail on the CA one to make it compatible with a TM im sure it can be done.

So my solution was simple with the Star G36...
Split the gun...very carefully.
Completely remove the outer barrel assembly and magwell. Once removed if you look at the front portion of the main body where the magwell attaches there is a small screw there. Remove it and save it, once removed you can pull that portion of the G36 body apart...at least on a Star one you can. I slid the complete hop up with inner barrel attached into the main receiver, pulled and locked the charging handle back and finally screwed the hopup onto the mechbox through the ejection port. Now, here's the unfun part. You have to mod your outer barrel. I cut the portion that used to hold the old hop up in place in half so the inner barrel would just pop right in. Keep in mind that the hopup is now held in place by the mechbox...as was meant to by ProWin. Now she runs perfectly. I'm loving it.
And spring changes are a piece of cake...it's a Star so I fold the stock over, grab an allen key and pop out the old spring and put in a new one.

I'll post pics in the next day or two.

Cheers

For those who care, the thread in the hop up for connecting to your mechbox is metric, M3 x .50 . You can get it at Fastenal, if there is one around you, or maybe a hardware store. It will also pass through the threading on the mechbox without damage. I'm planning on putting this on my Echo1 G36, not fully done yet, will post results later.