first shot always misfeeds

tintin1223456 · March 25th, 2012, 16:20

Ares G36:

There are no BBs in the gun. I put in a mag, and the first shot misfeeds, no BB. All other shots after the first shot, fires fine, no double feeds, misfeeds.

I've ruled out the hop-up, magazine, by putting in another gearbox. It fires fine with the replacement gearbox.

Does anyone have any idea what might be wrong in the gearbox?

Thanks.

HKGhost · March 25th, 2012, 16:34

If it's always the first shot after a mag is inserted that mis feeds, it's not an issue. There's no bbs loaded into the hop up chamber when the mag is inserted because the nozzle is forward. After the first shot, the nozzle retracts and a bb is now loaded. If you're lucky, the nozzle is retracted when you insert a mag which will allow a bb to be loaded. There's nothing wrong with the gun.

Gunny_McSmith · March 25th, 2012, 16:48

Yep, that's totally normal, although, I haven't experienced that problem since I installed an AWS raptor mosfet in my gun! :P

IggysPiggy · March 25th, 2012, 18:57

Put a full mag in shoot a few rnds off then do a mag change (without having emptying first mag), now with fresh mag take one shot, if a bb comes out and doesnt missfeed then it means that the gears are stopping in an overclocked state.(means that on trigger pull guns doing over a full cycle causing the tappet to be pulled back while the mags empty and doesnt load a round on next shoot as the loading part of the cycle was completed on an empty mag). If this isnt the case then theres something else.

It isnt uncommon but can cause you issues in a game when you might realy need that first round.

kalnaren · March 25th, 2012, 20:53

Er, when the spring isn't under tension, the nozzle should be all the way forward. The sector gear doesn't release the tappet plate until after the piston has started retracting. If your gun loads a shot after it fires, it means your mechbox is stopping mid-cycle. End-of-cycle should be tappet plate and piston fully forward. Ie, no BB loaded.

tintin1223456 · March 26th, 2012, 17:31

Looks like you guys are right.
At the end of cycle, the nozzle is sitting a little too much forward. There is not enough gap between the air nozzle and the hop-up bucking for a BB to fit in between. So when I put in a mag, the BB is prevented from being pushed in front of the Nozzle and the hop-up bucking.

Comparing my new gearbox and the old gearbox, the difference in the nozzle position is like 1-2 mm.

LocoYokoPoco · March 26th, 2012, 18:08

An active braking mosfet would remedy this.

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March 25th, 2012, 16:20	#1
tintin1223456 Trader rating Join Date: Jan 2011 Location: Winnipeg, MB	first shot always misfeeds Ares G36: There are no BBs in the gun. I put in a mag, and the first shot misfeeds, no BB. All other shots after the first shot, fires fine, no double feeds, misfeeds. I've ruled out the hop-up, magazine, by putting in another gearbox. It fires fine with the replacement gearbox. Does anyone have any idea what might be wrong in the gearbox? Thanks.

March 25th, 2012, 16:34	#2
HKGhost Trader rating Join Date: Nov 2009 Location: Mississauga, ON	If it's always the first shot after a mag is inserted that mis feeds, it's not an issue. There's no bbs loaded into the hop up chamber when the mag is inserted because the nozzle is forward. After the first shot, the nozzle retracts and a bb is now loaded. If you're lucky, the nozzle is retracted when you insert a mag which will allow a bb to be loaded. There's nothing wrong with the gun. __________________ Please email me as I'm not on ASC too often. Custom Build \| Upgrades \| Repairs \| Maintenance Contact: ghostgunwork@gmail.com / Private Message

March 25th, 2012, 16:48	#3
Gunny_McSmith a.k.a. Palucol Trader rating Join Date: Mar 2008 Location: MTL	Yep, that's totally normal, although, I haven't experienced that problem since I installed an AWS raptor mosfet in my gun! :P __________________

March 25th, 2012, 18:57	#4
IggysPiggy Trader rating Join Date: Sep 2007	Put a full mag in shoot a few rnds off then do a mag change (without having emptying first mag), now with fresh mag take one shot, if a bb comes out and doesnt missfeed then it means that the gears are stopping in an overclocked state.(means that on trigger pull guns doing over a full cycle causing the tappet to be pulled back while the mags empty and doesnt load a round on next shoot as the loading part of the cycle was completed on an empty mag). If this isnt the case then theres something else. It isnt uncommon but can cause you issues in a game when you might realy need that first round.

March 26th, 2012, 17:31	#6
tintin1223456 Trader rating Join Date: Jan 2011 Location: Winnipeg, MB	Looks like you guys are right. At the end of cycle, the nozzle is sitting a little too much forward. There is not enough gap between the air nozzle and the hop-up bucking for a BB to fit in between. So when I put in a mag, the BB is prevented from being pushed in front of the Nozzle and the hop-up bucking. Comparing my new gearbox and the old gearbox, the difference in the nozzle position is like 1-2 mm.

March 26th, 2012, 18:08	#7
LocoYokoPoco a.k.a. ian209 Trader rating Join Date: May 2009 Location: Calgary, AB, Canada	An active braking mosfet would remedy this. __________________ World record in propane sniffing. Armory -KWA Tavor TAR21 GBBR -TM PX4 w/Detonator Aluminum Slide

first shot always misfeeds

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