Semi-Auto Seizure Explained ( trigger glitch )

Cifyra · January 19th, 2011, 20:47

http://www.realsword.com.hk/produc_hj.htm

Just throwing this out there for those who will find it useful. ^^;

Repeat · April 27th, 2011, 10:48

I must say, this was a very well written thread. Your explanation is exactly what I've been working on with one of my AEG's.

Thumbs up Boss!
Share the knowledge.....

TaktikAirsoft · September 3rd, 2012, 22:51

Hello guys

I have a very interesting problem that I have spent HOURS trying to figure it out. I have the new machined aluminum gearbox shell that I have been working on for days.

I shoot in semi and it cycles only once then it's stuck and I can not fire in semi or full. If I hit the gearbox I can fire again.

I just put the gearbox back together with the gears, trigger, trigger switch, selector plate and the cut off lever. Like this I can see from where the piston would be.

I noticed that the trigger block does the cycle but get stuck somehow. If i nudge it I hear a click and it falls back into place and I can fire again but it stays suck until i nudge it.

Any ideas or suggestions?

lurkingknight · September 7th, 2012, 12:24

pry the copper trigger prongs a little farther part... the shuttle is getting stuck between them and not resetting.

TaktikAirsoft · September 7th, 2012, 13:02

I figured it out after... a good night sleep. I put a spacer on the pine where the spring attaches to the trigger block. This forces the trigger block to roll back down sooner and not get stuck...

What a mod...

localfreerider · November 16th, 2013, 22:40

I am working on a gearbox for a friend and I am having this exact problem. Are there any techs who have found a way to eliminate or minimize this problem? should I suggest to him running a slightly more powerful battery?

TaktikAirsoft · November 16th, 2013, 22:42

Have you tried me solution.

localfreerider · November 16th, 2013, 23:14

I am a bit of a visual learner, a photo or ms paint description might help

TaktikAirsoft · November 16th, 2013, 23:20

Send me a picture of your open gearbox and will draw the part on it.
Info@taktikairsoft.com

localfreerider · November 16th, 2013, 23:50

I just got it back together lol
could you show me on a generic photo of a V.II gearbox

I have a vague idea of what your talking about. increasing the return force of the trigger contacts?

TaktikAirsoft · November 17th, 2013, 07:45

Just email me the picture
Thanks

ThunderCactus · November 17th, 2013, 14:58

Cycle overlap is when you shoot semi and the gear train has so much momentum it brings the piston back part ways before coming to a stop.

If you have really bad cycle overlap, what you actually need is a neo magnet motor. The increased magnet strength REALLY helps the mechbox come to a stop faster.

If you have bad cycle overlap with a neo magnet motor, you may need a lighter gearset or a different gear ratio.

And never, under any circumstances, should you ever over-shim the gears to provide more resistance to the gear train.

localfreerider · November 17th, 2013, 16:52

normal cycle is (zipp...pop)
when I have lock up I've found it was caused by a light/incomplete trigger pull (zipp...nada)
after it locks up, the trigger has a slight clicking noise when depressed but does not engage the electric switch. I've found that switching to full auto solves the problem but I would like to eliminate it all together if possible.

Is it possible I've installed this piece upside down? it is the part that engages the trigger when you switch the safety
http://airsoftdepot.ca/catalog/produ...oducts_id=2218

as far as shimming, it is flawless as far as I can tell. I used modify shims and got the gears to float in the gearbox without rubbing against themselves or the gearbox shell. They are as tight as I can get them while still having a very slight amount of play.

compression is 90% to 100% and fps deviation is 1-2fps
its the most consistent shooting gearbox I've built thus far
but the trigger lockup is driving me nuts!

ThunderCactus · November 17th, 2013, 18:29

If the safety switch was upsidedown, you'd be able to shoot in safe
If your only issue is incomplete trigger pulls, you just need to learn how to shoot the gun lol
You can't look at fixing the mechbox if the problem is the operator, right?

The only other solution is installing an SW-comp that features complete cycling on semi so it finishes the shot even after you let go of the trigger.

You should really only be encountering semi-lock after using full auto and the cycle stops at a weird spot.

localfreerider · November 17th, 2013, 23:02

well you've guys have set my mind at ease a bit. Thanks for all the help.
The gearbox is working as it should.
I'll tell him to lay off the twitchy finger.

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April 27th, 2011, 10:48	#17
Repeat Trader rating Join Date: Oct 2004 Location: Barrie, Ontario	Great Job I must say, this was a very well written thread. Your explanation is exactly what I've been working on with one of my AEG's. Thumbs up Boss! Share the knowledge.....

September 3rd, 2012, 22:51	#18
TaktikAirsoft formerly moogy Trader rating Join Date: Mar 2008 Location: Montreal	Hello guys I have a very interesting problem that I have spent HOURS trying to figure it out. I have the new machined aluminum gearbox shell that I have been working on for days. I shoot in semi and it cycles only once then it's stuck and I can not fire in semi or full. If I hit the gearbox I can fire again. I just put the gearbox back together with the gears, trigger, trigger switch, selector plate and the cut off lever. Like this I can see from where the piston would be. I noticed that the trigger block does the cycle but get stuck somehow. If i nudge it I hear a click and it falls back into place and I can fire again but it stays suck until i nudge it. Any ideas or suggestions? __________________ ~~~Honor The Game(tm)~~~

September 7th, 2012, 13:02	#20
TaktikAirsoft formerly moogy Trader rating Join Date: Mar 2008 Location: Montreal	I figured it out after... a good night sleep. I put a spacer on the pine where the spring attaches to the trigger block. This forces the trigger block to roll back down sooner and not get stuck... What a mod... __________________ ~~~Honor The Game(tm)~~~

January 19th, 2011, 20:47	#16
Cifyra Iskaryot Trader rating Join Date: Jan 2011 Location: Mississauga/Ottawa	http://www.realsword.com.hk/produc_hj.htm Just throwing this out there for those who will find it useful. ^^;

September 7th, 2012, 12:24	#19
lurkingknight "bb bukakke" KING! Trader rating Join Date: Jul 2011 Location: Ottawa	pry the copper trigger prongs a little farther part... the shuttle is getting stuck between them and not resetting.

November 16th, 2013, 22:40	#21
localfreerider willing to perform services in a dark alley that may or may not leave you satisfied for a title. GFE = 1, looks = 2, BBFS for an extra $50. Trader rating Join Date: Oct 2005 Location: Never gonna let you down	I am working on a gearbox for a friend and I am having this exact problem. Are there any techs who have found a way to eliminate or minimize this problem? should I suggest to him running a slightly more powerful battery?

November 16th, 2013, 22:42	#22
TaktikAirsoft formerly moogy Trader rating Join Date: Mar 2008 Location: Montreal	Have you tried me solution. __________________ ~~~Honor The Game(tm)~~~

November 16th, 2013, 23:14	#23
localfreerider willing to perform services in a dark alley that may or may not leave you satisfied for a title. GFE = 1, looks = 2, BBFS for an extra $50. Trader rating Join Date: Oct 2005 Location: Never gonna let you down	I am a bit of a visual learner, a photo or ms paint description might help

November 16th, 2013, 23:20	#24
TaktikAirsoft formerly moogy Trader rating Join Date: Mar 2008 Location: Montreal	Send me a picture of your open gearbox and will draw the part on it. Info@taktikairsoft.com __________________ ~~~Honor The Game(tm)~~~

November 16th, 2013, 23:50	#25
localfreerider willing to perform services in a dark alley that may or may not leave you satisfied for a title. GFE = 1, looks = 2, BBFS for an extra $50. Trader rating Join Date: Oct 2005 Location: Never gonna let you down	I just got it back together lol could you show me on a generic photo of a V.II gearbox I have a vague idea of what your talking about. increasing the return force of the trigger contacts?

November 17th, 2013, 07:45	#26
TaktikAirsoft formerly moogy Trader rating Join Date: Mar 2008 Location: Montreal	Just email me the picture Thanks __________________ ~~~Honor The Game(tm)~~~

November 17th, 2013, 14:58	#27
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	Cycle overlap is when you shoot semi and the gear train has so much momentum it brings the piston back part ways before coming to a stop. If you have really bad cycle overlap, what you actually need is a neo magnet motor. The increased magnet strength REALLY helps the mechbox come to a stop faster. If you have bad cycle overlap with a neo magnet motor, you may need a lighter gearset or a different gear ratio. And never, under any circumstances, should you ever over-shim the gears to provide more resistance to the gear train.

November 17th, 2013, 16:52	#28
localfreerider willing to perform services in a dark alley that may or may not leave you satisfied for a title. GFE = 1, looks = 2, BBFS for an extra $50. Trader rating Join Date: Oct 2005 Location: Never gonna let you down	normal cycle is (zipp...pop) when I have lock up I've found it was caused by a light/incomplete trigger pull (zipp...nada) after it locks up, the trigger has a slight clicking noise when depressed but does not engage the electric switch. I've found that switching to full auto solves the problem but I would like to eliminate it all together if possible. Is it possible I've installed this piece upside down? it is the part that engages the trigger when you switch the safety http://airsoftdepot.ca/catalog/produ...oducts_id=2218 as far as shimming, it is flawless as far as I can tell. I used modify shims and got the gears to float in the gearbox without rubbing against themselves or the gearbox shell. They are as tight as I can get them while still having a very slight amount of play. compression is 90% to 100% and fps deviation is 1-2fps its the most consistent shooting gearbox I've built thus far but the trigger lockup is driving me nuts!

November 17th, 2013, 18:29	#29
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	If the safety switch was upsidedown, you'd be able to shoot in safe If your only issue is incomplete trigger pulls, you just need to learn how to shoot the gun lol You can't look at fixing the mechbox if the problem is the operator, right? The only other solution is installing an SW-comp that features complete cycling on semi so it finishes the shot even after you let go of the trigger. You should really only be encountering semi-lock after using full auto and the cycle stops at a weird spot.

November 17th, 2013, 23:02	#30
localfreerider willing to perform services in a dark alley that may or may not leave you satisfied for a title. GFE = 1, looks = 2, BBFS for an extra $50. Trader rating Join Date: Oct 2005 Location: Never gonna let you down	well you've guys have set my mind at ease a bit. Thanks for all the help. The gearbox is working as it should. I'll tell him to lay off the twitchy finger. Last edited by localfreerider; November 17th, 2013 at 23:05..

Semi-Auto Seizure Explained ( trigger glitch )

AEG Solutions