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 Cap Failures?

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Cerwyn
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PostSubject: Cap Failures?   Fri Aug 15, 2008 6:40 pm

Post by gavin

on average in a box of caps of 100 how many would fail
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PostSubject: Re: Cap Failures?   Fri Aug 15, 2008 6:40 pm

Post by kickback

If the caps are stored correctly then they should all work fine.

Kickback
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PostSubject: Re: Cap Failures?   Fri Aug 15, 2008 6:41 pm

Hi Gavin,

I don't think I've EVER had a cap fail to ignite.
Misfires (in my case) have been due to bad loading of the cartridges, or the gun jamming.
However, if you are a bit hasty taking the individual caps off the sprue frame they come in, I've had a few lately have the gunpowder disc fall off.
Either I've had a bad batch or they get twisted when ripping them off.

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PostSubject: Re: Cap Failures?   Fri Aug 15, 2008 6:41 pm

Post by Madmike

I experienced the gun powder falling off on some caps, regardless how careful I handled them. I too experienced caps not igniting, but this may be due to a weak hammer spring, I am not sure. IŽd say one out of ten is a dumb nut.
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PostSubject: Re: Cap Failures?   Fri Aug 15, 2008 6:42 pm

Post by Mark

Hmm, I rarely experiance any bad or defective caps as I usually store and handle them carefully. Sometimes the center does fall out and not much can be done about that but, I suppose that they could be "super glued" in place.

The caps original packaging is by far the best place to store the caps that I have found to date. When I load the cartridges I try not to peel the caps from the "sprue"that they are attached to I usually push the cartridge mouth over the cap and that usually does the "trick" and saves alot of caps too.
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PostSubject: Re: Cap Failures?   Fri Aug 15, 2008 6:42 pm

Post by gavin

what holds in the little bit of powder as i have hade the little discs fall out a few times
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PostSubject: Re: Cap Failures?   Fri Aug 15, 2008 6:43 pm

Post by Mark

The caps phosphorus filler is held in place as the phosphorus was slighty "sticky" when it was injected into the cap body as a slurry and the smalll recess in the caps bottom helps to give the phosphorus a place to hold on to.

gavin wrote:
how was it injected
By a machine that probably "gang" injects the phosphorus into the cap bodies all at the same time. The phosphorus is fed into the machine while it is wet with a solvent that evaporates when the caps are drying..
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Wanted to buy: MGC Sten MK3....trades?(still)

MGC MP40 Marushin MP40 Nakata MP40 TRC MP40

Modelgun manufacturers, past and present:CMC,CAW,Hudson,HWS,LS,MGC(R.I.P. 1960's~2007) Marushin,Marui,Kokusai,Shoei,Tanaka and Western Arms
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PostSubject: Re: Cap Failures?   Fri Aug 15, 2008 6:45 pm

Post by fightdesigner

I have misfires all the time with mine, but I guess I'm not sure if it's due to dud caps or bad loading or weak springs or what... and if bad caps, if it's because they're old, because I live in a damp climate (Seattle), or other.

I'd say about one or two in ten is a dud for me, sadly.

If it's a loading issue, I wouldn't be too surprised- my Japanese sucks, and half the things I've gotten don't have any instructions anyway. Do you generally want the plunger thing touching the cap already when they're loaded, or leave a little space between them?

Other suggestions?
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PostSubject: Re: Cap Failures?   Fri Aug 15, 2008 6:46 pm

Hiya,
dry caps are essential firstly.
Have a look at this site for clear instructions on loading cp rounds...

MGC c.p. Carts: httpp://www.mp40modelguns.com/forum2/viewtopic.php?t=2266
Hudson c.p. Carts: http://www.mp40modelguns.com/forum2/viewtopic.php?t=2323
Maushin 5.56mm Carts: http://www.mp40modelguns.com/forum2/viewtopic.php?t=2276
Marushin 9mm Carts: http://www.mp40modelguns.com/forum2/viewtopic.php?t=2264

Those should help hopefully!

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