Gun won't cycle

SultanOfShwing · March 5th, 2010, 16:20

I have a Systema M120 complete V2 gearbox that has never been opened and a King Arms Torque-up motor using a 9.6v 1500mah battery. The motor works fine on its own but when everything is assembled when I fire the gun I hear a click like the motor is trying to turn but doesn't have enough power. Is the motor not strong enough for this gearbox or could there possibly be another issue that is causing this problem?

If the solution isn't something simple like a stronger motor or battery I'll take it in to a local Gun Doc, but I just wanted to ask this here first.

Thanks a bunch.

coach · March 5th, 2010, 16:52

could be the motor but charge up the battery and try it again.

Styrak · March 5th, 2010, 17:13

Use a stronger battery, like a large.

venture · March 5th, 2010, 17:26

Lot of this going around. All motors seem to be billed as "high torque" lately. Try another motor, a TM one. The motor may have the torque but the angle of engagement may be wrong. Pinion gears from different companies seem to be very slightly different. This starts to be a factor from M120 up. Reason I bring this up is that I just had a CA M15 that wouldn't cycle. After checking everything else, I finally swapped motors and put in a TM EG1000 and it cycled fine. I assumed the motor was shot, but I have been messing around with it and it seems fine too, same as the OP. It is leading me to believe that the pinion gear is slightly different than the TM one. Odd though, it is the original CA "high torque" motor.

Sha Do · March 5th, 2010, 21:25

1500 mah will barely turn a 400fps spring unless there is some seriously upgraded wiring inside the mech box. Hook up a large battery (8.4 V will do) but go at least 2000 mah if you want any type of duration out of it. I have an 8.4V 4200 mah bat running my 400 fps AEG and it almost runs like it on a 9.6 because of the "surplus" mah.

SHA DO

Tankdude · March 5th, 2010, 21:27

Adjust the motor height.

Your motor might be too high and causing it to jam.

Exhopek · March 12th, 2010, 01:50

Quote:

Originally Posted by Tankdude

Adjust the motor height.

Your motor might be too high and causing it to jam.

Bingo. The battery is fine a 9.6v battery should be able to crank up that spring. Now whether it will last long with that 1500 mah is another thing.

Things to check.
1.) is the gearbox properly shimmed with gears rotating freely without the load/spring?
2.) is the battery really 9.6v? Check with a multi meter.
3.) is that type of motor and pinion gear correct for the AEG that you have?

I would urge you to check the motor height first though since it sounds like the motor is too high up causing binding.

Skladfin · March 12th, 2010, 01:58

motor is wired backwards. postive to red wire, negative to black wire.

the "click" you're hearing is the gear hitting the anti reversal latch trying to rotate the wrong way.

Sha Do · March 12th, 2010, 02:50

We had a factory built ICS M4 gun come through a local supplier lately where the mech box was locked up when we first tested it. Turned out to be that they wired the front fuse harness black to red and red to black....LOL. Same thing can happen at the motor end of things.

SHA DO

SultanOfShwing · March 15th, 2010, 21:18

I've tried two motors now (a TM EG-1000 and a KA Infinite Torque-up) both motors act the same. I've tried multiple motor heights but I have yet to try reversing the wiring. I'll try that tonight when I finish work. If that doesn't work then it's off to my local gun-doc (or at least the shop he works out of which is convieniently just down the road).

Ugh....such headaches. I just want to play again!!!

Styrak · March 15th, 2010, 21:40

Did you try a different (bigger) battery?

SultanOfShwing · March 16th, 2010, 08:31

I've tried a 8.4v 1800mah, 9.6v 1600mah, and a 9.6v 3600mah. I'm about to try reversing the wiring.

Edit: I tried reversing the wiring and it still seems to react the same way. The motor tries to turn but is stopped and I can hear a click. Is there a chance that the mechbox I got is simply seized out of the box?

Styrak · March 16th, 2010, 16:29

No, a large battery would turn it over no problem. Perhaps your motor is fubar.

Shooting Addict · March 16th, 2010, 16:44

Quote:

Originally Posted by Styrak

No, a large battery would turn it over no problem. Perhaps your motor is fubar.

He tried more then one moter (KA and a TM) and both didn't work. If the gun stopped working after you put the mechbox in then it's the problem.

ujiro · March 16th, 2010, 16:50

Overshimmed, or motor height is much too high.

Home	Forums	Register	Gallery	FAQ	Calendar
Retailers	Community	News/Info	International Retailers	IRC	Today's Posts

British Columbia	Alberta
BCAC	EAR
Op-For	JOC
Northern Arms Airsoft	Skunkworx Airsoft
Airsoft Kelowna	RAAT
Prince George Airsoft	Manitoba
Saskatchewan	MAA
SK Airsoft	Ontario
PDW	Airsoft Ottawa
South Sask Mercs	Snow Dragons
Quebec	1st Ranger Platoon
PQAC	Wolfpack Tactical
1st Pathfinders Regiment	TTAC3
Quebec Airsoft
MTX Airsoft	Atlantic
FAQc	Atlantic Airsoft

March 5th, 2010, 16:20	#1
SultanOfShwing Trader rating Join Date: Jan 2009 Location: Surrey, BC	Gun won't cycle I have a Systema M120 complete V2 gearbox that has never been opened and a King Arms Torque-up motor using a 9.6v 1500mah battery. The motor works fine on its own but when everything is assembled when I fire the gun I hear a click like the motor is trying to turn but doesn't have enough power. Is the motor not strong enough for this gearbox or could there possibly be another issue that is causing this problem? If the solution isn't something simple like a stronger motor or battery I'll take it in to a local Gun Doc, but I just wanted to ask this here first. Thanks a bunch. __________________

March 5th, 2010, 17:13	#3
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	Use a stronger battery, like a large. __________________ Airsoft Sales and Repair/Upgrade Services

March 5th, 2010, 17:26	#4
venture Trader rating Join Date: Jun 2005 Location: Halifax	Lot of this going around. All motors seem to be billed as "high torque" lately. Try another motor, a TM one. The motor may have the torque but the angle of engagement may be wrong. Pinion gears from different companies seem to be very slightly different. This starts to be a factor from M120 up. Reason I bring this up is that I just had a CA M15 that wouldn't cycle. After checking everything else, I finally swapped motors and put in a TM EG1000 and it cycled fine. I assumed the motor was shot, but I have been messing around with it and it seems fine too, same as the OP. It is leading me to believe that the pinion gear is slightly different than the TM one. Odd though, it is the original CA "high torque" motor. __________________ Visit us at :www.ventureairsoft.ca

March 5th, 2010, 16:52	#2
coach aka coachster Trader rating Join Date: Mar 2008 Location: T dot	could be the motor but charge up the battery and try it again.

March 5th, 2010, 21:25	#5
Sha Do Trader rating Join Date: Jun 2003 Location: No where to be seen......Hillsburgh	1500 mah will barely turn a 400fps spring unless there is some seriously upgraded wiring inside the mech box. Hook up a large battery (8.4 V will do) but go at least 2000 mah if you want any type of duration out of it. I have an 8.4V 4200 mah bat running my 400 fps AEG and it almost runs like it on a 9.6 because of the "surplus" mah. SHA DO __________________ SHOOT TO KILL......... WITH COMPASSION

March 5th, 2010, 21:27	#6
Tankdude Trader rating Join Date: Jan 2005 Location: East Coast, New Brunswick	Adjust the motor height. Your motor might be too high and causing it to jam.

March 12th, 2010, 01:58	#8
Skladfin Trader rating Join Date: Dec 2006 Location: Glace Bay, Nova Scotia	motor is wired backwards. postive to red wire, negative to black wire. the "click" you're hearing is the gear hitting the anti reversal latch trying to rotate the wrong way.

March 12th, 2010, 02:50	#9
Sha Do Trader rating Join Date: Jun 2003 Location: No where to be seen......Hillsburgh	We had a factory built ICS M4 gun come through a local supplier lately where the mech box was locked up when we first tested it. Turned out to be that they wired the front fuse harness black to red and red to black....LOL. Same thing can happen at the motor end of things. SHA DO __________________ SHOOT TO KILL......... WITH COMPASSION

March 15th, 2010, 21:18	#10
SultanOfShwing Trader rating Join Date: Jan 2009 Location: Surrey, BC	I've tried two motors now (a TM EG-1000 and a KA Infinite Torque-up) both motors act the same. I've tried multiple motor heights but I have yet to try reversing the wiring. I'll try that tonight when I finish work. If that doesn't work then it's off to my local gun-doc (or at least the shop he works out of which is convieniently just down the road). Ugh....such headaches. I just want to play again!!! __________________

March 15th, 2010, 21:40	#11
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	Did you try a different (bigger) battery? __________________ Airsoft Sales and Repair/Upgrade Services

March 16th, 2010, 08:31	#12
SultanOfShwing Trader rating Join Date: Jan 2009 Location: Surrey, BC	I've tried a 8.4v 1800mah, 9.6v 1600mah, and a 9.6v 3600mah. I'm about to try reversing the wiring. Edit: I tried reversing the wiring and it still seems to react the same way. The motor tries to turn but is stopped and I can hear a click. Is there a chance that the mechbox I got is simply seized out of the box? __________________ Last edited by SultanOfShwing; March 16th, 2010 at 08:58..

March 16th, 2010, 16:29	#13
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	No, a large battery would turn it over no problem. Perhaps your motor is fubar. __________________ Airsoft Sales and Repair/Upgrade Services

March 16th, 2010, 16:50	#15
ujiro Trader rating Join Date: Aug 2006 Location: Burlington, ON	Overshimmed, or motor height is much too high. __________________ I love freedom and consequently America

Gun won't cycle

Doctor's Corner