Trigger activated electrical connectors....
 

I had an arc between my connectors....the ones that are joined by the depression of the trigger, dont know what they are called. There is some scorching on the copper...enough that it caused some damage. The damaged area wont pass current anymore. Anyways, Im looking for a way to "fix" the copper,if possible, so that I can get a solid connection again. I looked all over for replacement parts but so far any place I know of in canada doesnt carry it. Nor the Official Classic Army website. Is there some kind of thin material I could perhaps wrap around the connector to make it like new again? Till I find a place to order a new part im kinda stuck trying to fix it myself.

CA M15A4 SPC Ver 2 gearbox


Thanks.

clean it and add a coat of solder?

I acctually tried this, it caused another arc.

You can buy low resistance (such as they are) switches from Systema. You'll likely have to order it from an Asian retailer.

Your heavy spring caused this, so you'll need a switch a little more heavy-duty than a stock switch. Make sure you don't over-grease the mechbox (especially tappet guides) to ensure that the switch conacts stay dry. Grease on the contacts accelerates the problem greatly.

Well, solder coat number two did it. A 1/4 to 1/2 drop sized coating, thicker than I tried the first time worked. I can feel the solder coat in the trigger when I fire. I can achieve full auto on semi by only 1/2 pulling the trigger, which is kinda cool, like the Aug but backwards. solder is too thick I think so im going to try and shave it down to the sweet spot where I get semi back through the whole trigger pull.

Just remember, solder melts at less than half the temperature to rquired to melt copper, if indeed your contacts were pure copper. Solder is a very temporary solution and won't last. It isn't legal for use (ie CEC) as a switch contact material nor for use in any current-carrying conductor joints, due to it's poor ability to withstand heating.

+1, found this out with an arcing problem in the contacts of a G&G M14. Even though I built the 2mm by 4mm gab up with desoldering braid soldered onto the contact, I suspect it won't last a long time. Then again, the first time I found the crack due to the owner using semi all the time and an over 400fps spring, I soldered the contact. When the new owner got the gun a few months later, all traces of solder were gone. Musta not cleaned it well enough. Which is surprising. ;)

Definately a temp fix till I can get the parts ordered.... felt bad putting it back together with just solder but I cant stand my ol girl all in pieces not working.
Luckily I have technical intrest and the drive to be self sufficiant. Sick part is, ive spent more time in my rifle than firing it. Its interesting, frusterating, yet rewarding when you get it working. Starting to wonder if its more of a tinkering hobby than a sport. Always trying to make the perfect creation....

buy some new contacts, and then get a mosfet and upgrade. then you will not have to worry at all.

Got a link for somthing like that? Ive never heard of this.

Just have to toss MOSFET into the search engine here to get a few threads, or you can get the info from Airsoft Mechanics.

You can also reduce the current draw of your entire system by adding torque somewhere in there (I'd recommend the gears before the motor.)

K, now where would be the best place to pick up a mosfet? and what is a decent price on one of these?

Now I don't know much about this application of MOSFETs, however, my electrical background would seriously advise you to research this particular use before doing anything.

Airsoft guns draw A LOT of current, and this project WILL backfire unless you know what you are doing. Don't think this is a quick fix.

No, I'm not bashing the MOSFET trigger, I plan to build one myself because I have the electrical knowledge to know what I am doing, but I still need to learn more about how people have used them in airsoft before I even think of starting the project.

MOSFET's imho should be used as a last resort. but like they said if you really want one, you can search up info on how to install them