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PostSubject: Double Capping?...   Sun Aug 17, 2008 7:13 pm

Post by John Frenzel

I plan on using my MP40 for reenacting but would like a little more realistic sound. I have heard that you can use two caps instead of one. Is this posasible?
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:13 pm

Post by francky1958

You're right! put the 7mm cap on the inner piston facing to the detonator,
i tried this before, this is great. i'll really recommend to do it!
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:14 pm

Post by John Frenzel

FRANCKY, Thanks. I havnt loaded and fired the gun yet, and could use some advise on the how tooooos. If I use two caps are they facing each other? I am A complete dummie at this, and aNY HELP WOULD BE APPERICIATED.
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:15 pm

Post by Spencerman

I wondered this also, whether the caps would face each other or both sit the same way. A picture would be great to show how if possible.

Also, having read about muzzle flash by filling the cartridge with magnesium, could this be done using two caps, or would it just be too much overkill?
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:15 pm

Post by Mark

GUY'S,

You really should never use two caps as it over pressures the cartridges and causes them to wear out rapidly. As the pressures from the two caps will over expand the cartridge case walls and "work harden" them and they become brittle overtime.

As for the the mag powder in the cartridges, remember that the magnesium is also a source of pressure and with two caps the pressures in the cartridge will "sky-rocket" a bad thing indeed...
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MGC MP40 Marushin MP40 Nakata MP40 TRC MP40

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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:16 pm

Post by francky1958

Sorry guys that i made you all confused. please check this 2 pics up!
i don't know which mp40 that John Frenzel possess, in this case, cartridges
should be mgc p220 cp cartridges or 9mm. first cap loaded as always, second cap loaded facing to the detonator, i think this is the most easiest way to fun the firing better than normal.

Marks right, please do not even think to load 2caps in the cartridges,
this is real bad!!

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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:17 pm

Post by John Frenzel

Guys,My MP40 is a Marushin, and the caps load from the rear of the shell.
With a single cap, is the sound loud, or does it sound like a cap gun?
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:17 pm

Post by francky1958

Hi John Frenzel

You will be able to use this p220 cartridges with some little modification to the detonator. Usually, it is too quiet with single cap, you can shoot in the midnight!!
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:18 pm

Post by Garyforce

ill just reinforce what mark says. that 2 caps is not really a good thing.

but today i found on the modelgun.co.uk site..new FLAMING caps !

check them out...ive got to get me some of these !
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:19 pm

Post by Spencerman

I too saw the flaming caps. You will have to let us know what the result of firing those is. Pics would help also. Maybe someone could compare them to using the filings to produce muzzle flash (though I doubt that they will be quite that good!).
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:19 pm

garyforce wrote:
ill just reinforce what mark says. that 2 caps is not really a good thing.
but today i found on the modelgun.co.uk site..new FLAMING caps !
check them out...ive got to get me some of these Very Happy !
I've been looking for something to produce good muzzle flash from my Marushin MP40. I've also spotted the Flame Caps you mention but will the flame damage the plastic firing chamber? Please keep me posted!
As a matter of interest, I accidentally left a loose powder charge that had dropped off a 7mm Marushin cap underneath a new 7mm cap in the cartridge of my Marui P38. This doubled the charge sitting on top of the cartridge's internal firing pin. The gun fired with an almighty loud bang (great I thought) but the force split the barrel along it's length, twisting the zinc insert inside. Luckily, the plastic split along it's seams and the slide held everything together. It still took a lot of fiddling to strip and reassemble. I think it's still bent somewhere as it won't operate properly now. BEWARE USING 2 CAPS!
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:20 pm

Post by Garyforce

with regards to flaming / sparking caps

ok.... sparking caps i have used....the side effects are more residue left behind after firing so more intensive cleaning is required. (and if you dont clean the gun and carts well then your knackered )

another side effect of firing any modelgun is that over time the plastic will become brittle and liable to breakages ...... this is down to the chemicals in the caps.... cleaning..... and general wear and tear.

these new flaming caps ..... i personally dont expect them to have anymore power to them .... but i do expect them to leave a lot more mess behind ! ... so theres going to be a lot more of a need to strip and clean regularly.

but......if the effects are good..... could be worth it !
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:21 pm

Post by Waffenknecht
Hi,
Ihave the same problem I've a marushin MP40 with original catridges and the golden Caps from MG. I don't know are the Marushin caps better than MG. I think the caps from MG not load and small flash. I tried to put two caps inside, wow big bang great flash but the power is to big for plasik marushin. Now I've hear i can take one 7mm caps and put one 5mm inside. What it's the opinion from you, Please tell me!!!!!!!!!!
werner
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:21 pm

Post by Garyforce

hi Waffenknecht

yes ....the double capping (7mm & 5mm) can work very well .... but you have to bear in mind that this IS A RISK that you will take ..... the power of the 2 caps together has the potential to damage your carts and the gun itself ..... if it was me.....id not bother ! .....but ultimately.... its your choice
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:22 pm

Post by Waffenknecht

Hi
yes i understand but give it caps who making a good loud bang and have enough power for a good function. I#ve the problem that I cam make perhaps three shoots and than blocked . I think the caps have not enough power
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:22 pm

Post by Garyforce

im afraid i dont own an MP40 ... so im unable to comment on wether its a cap problem....or something else .... a problem with your gun somewhere ....hopefully one of the other guys will be able to suggest something for you as theres a few people on here who own a MP40
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:23 pm

Post by Claymore

the caps are not the problem, sometimes its the cartridge itself (loses gas pressure too quick) check the detonator pin is in position right and make sure the bolt and recoil spring assembly are moving freely and well lubed.
I have a problem with mine at the moment where it will not fire a round then fire a couple and then nothing, after playing around with the detonator and bolt it fired a full mag no probs however when i first got it you could burst fire no problem now its not doing that but it aint the cap. Only use one any more and bye bye gun.
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:24 pm

Post by Mark

Guys, the Marushin MP40 is an excellently detailed modelgun and it is nice to look at. However, it has two really bad parts to contend with the bolt face and the chamber. Both of these parts are ABS and they tend to wear over time especially the chamber as it is relatively "soft" as plastics go. The detonator actually sinks into the plastic chamber piece especially when the cartridges are loaded incorrectly or double caped...The only way to fix the problem is to replace the chamber with a stainless steel part that won't wear out..

Werner,

I haven't forgotten about the Marushin MP40 chamber that you asked me to make for you. I just have been busy lately...
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:25 pm

Post by Waffenknecht

I've the champer in ABS I to fix the detonator with a metalldisk what is under a screw. I file this disk smaller that can go the pressure in right to barrel. It's goes but in fullmetal chamber was better..The bolt goes easy i have grease them in the receiver the recoil spring goes freely, but after Two or three shoot blocked the cartridges the function, One cartridge are in chamber one lies in receiver and the rest are in magazin. the first and perhaps the second shoot goes out and lies on ground
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:25 pm

Post by Madmike

That sounds like a problem with the extractor (Auszieher). But I do not own a MP40 so I canīt tell you details. Check if the gun loads and extracts rounds properly when you use it without caps, cycling it by hand.

No, I do not think that there is a great difference between the caps as they all come from the same company, regardless if they are Marushin or MGC. There seem to be new FLAME CAPS available now, I have one box but did not try them yet. Some say they are stronger, but Iīd say they look exactly as the standard Marushin caps.

Getting those Marushin rifle/SMG kits to work properly is a pain to do. You need lots of adjustment. And a great problem is friction as the caps are very weak compared to normal blank carts. So make sure that everything can move easily in your gun (especially the bolt), claen and lube it well.

Modelguns are not loud in general. I made the experience the larger the cart (rifle,.45 etc.) the smaller the bang. I think with my Marushin XM177E2 the movement of the bolt is as loud as the cap bang, perhaps even louder. But in "small calibre" pistols (Marushin Colt .25 and FN 1910) the 5 mm cap in the small cart makes a nice loud bang.
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:26 pm

Post by francky1958



hi Waffenknecht,

Nothing progress? check the extractor if it's working properly.
please think deeply before you'll pull the trigger, what caused the result.

hi, guys

Warrenknecht have been troubled with his mp40 for about couple month, he bought mp40 kit from me, actually. i'd had advised a lot but it's hard to tell the details.
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:27 pm

Post by Waffenknecht



thanks to Franky, all my problems with the MP40 away, Ican shoot now without problems
thanks very much all user
werner(waffenknecht
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:27 pm

Post by Reemo

So what was the problem, exactly??
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PostSubject: Re: Double Capping?...   Sun Aug 17, 2008 7:28 pm

Post by Waffenknecht

with the gun I don't have problems. The only I want to know are which caps are better for a god loud bang marushin or mg or flame
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