Gun not drawing enough power?

Chadillac · October 24th, 2008, 20:39

I have tried with a new battery to test my CA scar. it will cycle a couple times as normal, and then with every additional press of the trigger, gets slower and slower, then nothing. Could this be a wiring issue? like a kinked wire? the old wiring looks pretty rough(with kinks and such) and when I try the battery in another AEG it funtions as it should. Any help would be appriciated!

Thanks!! and HELP!

Skladfin · October 24th, 2008, 20:39

im pretty sure your battery just ran out....

Ktown Militia · October 24th, 2008, 20:42

when you got your new battery, did you sitck in the AEG right away? Or did you charge it. Usually if the battery comes new, the AEG will pull off a couple shots and then go kaput. This is good for the memory, and then just recharge.

Kos-Mos · October 25th, 2008, 19:28

Memory does not exist.

AND

It is not good for the battery.

If the pack is brand new, it should have between 10-20% of charge. Not enought to cycle a gun properly.

Charge it and test. If it does the same thing again, then you have a wiring issue. Something heats-up when you fire and the contact gets worst and worst.

ThunderCactus · October 26th, 2008, 17:43

NIMH doesn't have memory, NiCd has voltage depression.
If you charged your battery before you put it in the gun it's likely you didn't charge it properly.

Chadillac · October 27th, 2008, 01:19

charging it properly? please elaborate. Its NiMH im using a smart charger with peak detection

green_ninja · October 29th, 2008, 16:01

new batteries should initially be slow charged (normally 110maH - 400maH) for about 10-12 hours. And thats for a typical 2200maH battery. Speed charge is junk.. always plan ahead and use slow charge as much as possible.

Mikhail · November 5th, 2008, 13:07

Another possibility (that I encountered a day ago) is that the carbon build up on your trigger electrical contacts has built up from arcing to the point where, while an electrical connection is made on trigger press, the carbon is inserting a resistive load on the circuit. This means that the battery now has to work a lot harder to power the motor AND overcome the resistor that the trigger contacts have become.

With a meter I was able to verify that my trigger was working (continuity test at trigger solder joints) yet when the battery was connected directly to the motor, only THEN would it spin it up.

The solution, short term was to drip some isoprophol alcohol into the trigger contact area with swap. I was able to do this from OUTSIDE the mechbox.
Then work the trigger repeatedly. This aided the contacts to self clean via abrasion.

The solution, long term is to prevent the arcing by using a mosfet to eliminate the heavy electrical across the contacts.

Before I did this, semi was intermittent then gone....followed by interminttency for the full as well the next day....but semi dissapeared with absolutly no sign on any part misalignment or damage.

Following the cleaning of the contacts I also gained a noticeable (perhaps 20%) increase in motor responsiveness and power.

If I can save anyone a mechbox tear apart with this simple cleaning procedure....its worth trying.

Mike

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October 24th, 2008, 20:39	#1
Chadillac Trader rating Join Date: Apr 2008	Gun not drawing enough power? I have tried with a new battery to test my CA scar. it will cycle a couple times as normal, and then with every additional press of the trigger, gets slower and slower, then nothing. Could this be a wiring issue? like a kinked wire? the old wiring looks pretty rough(with kinks and such) and when I try the battery in another AEG it funtions as it should. Any help would be appriciated! Thanks!! and HELP!

October 24th, 2008, 20:42	#3
Ktown Militia Trader rating Join Date: Mar 2008 Location: Kelowna BC	when you got your new battery, did you sitck in the AEG right away? Or did you charge it. Usually if the battery comes new, the AEG will pull off a couple shots and then go kaput. This is good for the memory, and then just recharge. __________________

October 29th, 2008, 16:01	#7
green_ninja Trader rating Join Date: Apr 2007 Location: Winnipeg	new batteries should initially be slow charged (normally 110maH - 400maH) for about 10-12 hours. And thats for a typical 2200maH battery. Speed charge is junk.. always plan ahead and use slow charge as much as possible. __________________ LOL

October 24th, 2008, 20:39	#2
Skladfin Trader rating Join Date: Dec 2006 Location: Glace Bay, Nova Scotia	im pretty sure your battery just ran out....

October 26th, 2008, 17:43	#5
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	NIMH doesn't have memory, NiCd has voltage depression. If you charged your battery before you put it in the gun it's likely you didn't charge it properly.

October 27th, 2008, 01:19	#6
Chadillac Trader rating Join Date: Apr 2008	charging it properly? please elaborate. Its NiMH im using a smart charger with peak detection

November 5th, 2008, 13:07	#8
Mikhail Trader rating Join Date: Aug 2008 Location: N/A	Another possibility (that I encountered a day ago) is that the carbon build up on your trigger electrical contacts has built up from arcing to the point where, while an electrical connection is made on trigger press, the carbon is inserting a resistive load on the circuit. This means that the battery now has to work a lot harder to power the motor AND overcome the resistor that the trigger contacts have become. With a meter I was able to verify that my trigger was working (continuity test at trigger solder joints) yet when the battery was connected directly to the motor, only THEN would it spin it up. The solution, short term was to drip some isoprophol alcohol into the trigger contact area with swap. I was able to do this from OUTSIDE the mechbox. Then work the trigger repeatedly. This aided the contacts to self clean via abrasion. The solution, long term is to prevent the arcing by using a mosfet to eliminate the heavy electrical across the contacts. Before I did this, semi was intermittent then gone....followed by interminttency for the full as well the next day....but semi dissapeared with absolutly no sign on any part misalignment or damage. Following the cleaning of the contacts I also gained a noticeable (perhaps 20%) increase in motor responsiveness and power. If I can save anyone a mechbox tear apart with this simple cleaning procedure....its worth trying. Mike

Gun not drawing enough power?

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