KWA 2gx Gearbox problem?

pitobread · November 13th, 2011, 20:50

Hey all,

I have a KWA g36c with a 2gx gearbox in it. I took it apart to replace an air seal nozzle the other day and noticed when I cycled it on the battery the piston is stopping about half way down the barrel every shot on semi.(I can see it through the vented cylinder) It does do the whole cycle but this seems to be the spot where it wants to come to a rest.

I am not sure if it is supposed to be this way, it makes sense for it to stop at with the spring with the least tension, so a little clarification would be great and a little help if it is indeed a problem to help me get it sorted would be great.

krap101 · November 13th, 2011, 21:34

Possibly a stripped piston or broken piston head?

pitobread · November 13th, 2011, 21:37

No, it still does the full cycle, but it continues back the cylinder and comes to a rest at 1/2. I am not sure if this is normal. Like I said, I assume it would stop at the bottom of the stroke once the spring is unloaded.

Spawn28 · November 14th, 2011, 20:09

Does it happen everytime?or like 5 times outa 10 type thing?

pitobread · November 15th, 2011, 12:33

I would say almost every time. Every odd shot I don't see the piston head through the cylinder vent, say 8 out of 10.

pitobread · December 9th, 2011, 07:21

Kind of figured this one out, using a 11v 1800mah lipo and gun is over cycling on every odd shot.

Wrath144 · December 9th, 2011, 18:39

Yes, this sounded like overspin. In order to correct this problem, either use a lower power battery or an active breaking mosfet.

ManateeMatt · December 10th, 2011, 14:41

Ok wow, didn't read original post all that well....

Id say over spin too, but they should be able to take 11.1v lipo without to much issue.

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November 13th, 2011, 20:50	#1
pitobread Trader rating Join Date: May 2011 Location: Ctown	KWA 2gx Gearbox problem? Hey all, I have a KWA g36c with a 2gx gearbox in it. I took it apart to replace an air seal nozzle the other day and noticed when I cycled it on the battery the piston is stopping about half way down the barrel every shot on semi.(I can see it through the vented cylinder) It does do the whole cycle but this seems to be the spot where it wants to come to a rest. I am not sure if it is supposed to be this way, it makes sense for it to stop at with the spring with the least tension, so a little clarification would be great and a little help if it is indeed a problem to help me get it sorted would be great.

November 13th, 2011, 21:34	#2
krap101 Trader rating Join Date: Jun 2007 Location: Roscoe, IL USA	Possibly a stripped piston or broken piston head? __________________ AIRSOFT PRECISION DYNAMICS - Augmenting Reality

November 14th, 2011, 20:09	#4
Spawn28 I am manly hear me squeek Trader rating Join Date: Apr 2007 Location: North Bay The Gateway to Hells Ars!	Does it happen everytime?or like 5 times outa 10 type thing? __________________

November 13th, 2011, 21:37	#3
pitobread Trader rating Join Date: May 2011 Location: Ctown	No, it still does the full cycle, but it continues back the cylinder and comes to a rest at 1/2. I am not sure if this is normal. Like I said, I assume it would stop at the bottom of the stroke once the spring is unloaded.

November 15th, 2011, 12:33	#5
pitobread Trader rating Join Date: May 2011 Location: Ctown	I would say almost every time. Every odd shot I don't see the piston head through the cylinder vent, say 8 out of 10.

December 9th, 2011, 07:21	#6
pitobread Trader rating Join Date: May 2011 Location: Ctown	Kind of figured this one out, using a 11v 1800mah lipo and gun is over cycling on every odd shot.

December 9th, 2011, 18:39	#7
Wrath144 formerly steyr Trader rating Join Date: Sep 2005 Location: Winnipeg, Manitoba	Yes, this sounded like overspin. In order to correct this problem, either use a lower power battery or an active breaking mosfet. __________________ BROFORCE Admin - Winnipeg Airsoft

December 10th, 2011, 14:41	#8
ManateeMatt Trader rating Join Date: Apr 2011 Location: Halifax NS	Ok wow, didn't read original post all that well.... Id say over spin too, but they should be able to take 11.1v lipo without to much issue. Last edited by ManateeMatt; December 10th, 2011 at 14:44..

KWA 2gx Gearbox problem?

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