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M14 misfeed

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Old January 16th, 2009, 00:05   #16
Flatlander
 
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Quote:
Originally Posted by BORDENSNIPER View Post
rubber Lubed, mag tongue cut a little bit, lubed the magwell.

No effect. still does random feeding. For sure it is the nozzle not going back far enough.

have 2 choices

- cut the tip of the nozzle off.
- replace the SECTOR gear with a reinforced modify sector gear and see if it pulls better. UNLESS the sector gear is unique to the V7
Did you try a different mag as you mentioned it was a kart?

One way to test if a mag feeds well is to load it up (wind it if it's a hi cap) and release the bb's by pulling the lip back. They should come out with quite some force shooting the BB's probably at least 5 feet. Sometimes shitty mags (especially mid caps) simply can't keep up to the gun.

v7 sector gears are standard v2/3 gears as is the bevel gear. The spur gear is unique to the v7. This is the case on Marui and Marui clones anyways. I can't comment on the CA and G&G's.
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Old January 16th, 2009, 02:46   #17
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Alright, but the sector gear on this m14 has a thicker nob that pulls the tappet plate than most sector gears. w/e il figure that out.

the mag surely doesnt fire 5 feet not even 2.

it spits like maybe 1 foots max and feeds maye 8-13 bb;s out then stops.

i flipped the gun upside down, put a bb in the magwell but it didnt go down in fornt of the nozzle it got stuck right before it, BUT a light tap with an allen key fixed that.

conclusion being, mag is too weak to force bb;s in. OR, chance sector gear.
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Old January 16th, 2009, 10:24   #18
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Quote:
Originally Posted by BORDENSNIPER View Post
Alright, but the sector gear on this m14 has a thicker nob that pulls the tappet plate than most sector gears. w/e il figure that out.

the mag surely doesnt fire 5 feet not even 2.

it spits like maybe 1 foots max and feeds maye 8-13 bb;s out then stops.

i flipped the gun upside down, put a bb in the magwell but it didnt go down in fornt of the nozzle it got stuck right before it, BUT a light tap with an allen key fixed that.

conclusion being, mag is too weak to force bb;s in. OR, chance sector gear.

Some sector gears, like G&P for instance, have a larger cam (aka knob) on them essentially giving them a sector chip effect. I just checked my spare TM sector gear out of an m14 to be sure and it has the small cam on it, exactly like their v2 sector gears.

Sounds like your mag's spring is too weak to force the BB's into the hopup consistently. Try shooting your gun upside down with the mag in and see how it feeds, like someone had suggested earlier.
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Old January 16th, 2009, 10:38   #19
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Metal or plastic nozzle? I now there is a ledge on the nozzle that can get caught on the hopup and cause major issues.. take an exacto and smooth that _|- so it kinda is like this _/- but on a more sharper angle.. I have had this issue as the nozzle does not line up correctly after removing the mechbox.. this does not harm performance at all and actually helps alot.. only do this on a plastic nozzle. I have had to do this to a TM M14, CA M15A4 and one ICS nozzle.. Saves the issue and I still dont know why that damn ledge is there..
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Old January 16th, 2009, 16:58   #20
BORDENSNIPER
 
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il try the upside down with mag thing but i doubt thatl work, if the spring is weak in the mag being upside down wont help much...

IlL do the upside down thing, if it doesnt work then I will:
- take gun apart, check nozzl for ledge.
-take gearbox apart and wapt out the SECTOR
-put together
-if problem persist 100% its a shity mag.

so then im gonna have to order from lik ehobby or some shit for a tm mag.

grr....

many thanks for everyones help, keep it coming if u have experience with an M14
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Old January 17th, 2009, 15:50   #21
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The previous owner said it was not misfeeding ?
If this is right, it is your mistake somewhere while rebuilding it.

Why dont you try good lowcap mag into it ?
It costs nothing, just ask a friend or someone at any game.

Then try single shot VS full auto.
If no misfeed on single mode, no misfeed full auto = change your mags
If no misfeed on single mode, misfeed full auto = try a sector clip
If misfeed on single mode, misfeed full auto = check hopup assembly,rubber etc..

If hopup is pristine shape and open 100% and it still misfeed either single or full mode, I'll think about swapping nozzle but not cutting it.

Good diagnostic always comes cheaper.
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Old January 17th, 2009, 17:41   #22
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FIXED ...sort a lol

alright read up!

I took it apart and decided to swap the tappet plates to the stock one, WHY?

The GUARDER tappet plate I put into it is a little different than the stock one, how? the ack of the tappet plate that engage the cam of the SPUR gear is a little farther back than the stock one. what does this mean? it means that the nozzle wasnt going far back enough to feed properly.

Now the gun feeds and fire like a bull on crack.

BUT, once in a wile it double feeds, and that is the direct problem of overlubing and the fact that I cut a little of the mag lip so it feeds too much at once.

problem mostly solved...pissed that GUARDER bran new one i bought was the problem...BUT im sure if I put the guarder one back in with a proper mag that has a hard spring pushin the bb's hard in, then it should be fine

Question still remains:
- If the guarder one was not adequately pulling the nozzle back, How come some times it fed and sometimes it didnt?

Thanks to everyone who helped out here.

If u do have feeding problems, and mags switch ups didnt work, look into ur tappet plate movements and its affect on the nozzle, might just be it.
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Old January 17th, 2009, 18:28   #23
Gunny_McSmith
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I think I have a little idea for that...
When the gear moves the tappet plate back, by the time it goes back into its starting position where it would be ready to cycle the tappet plate back again, the tappet plate will have " some fraction of a second " where there is no gear in its way, and its spring, that is supposed to pull it back in place would have to fight with the spring of the mag pushing the bbs in, before the piston is released....And if the nozzle was pulled a little bit further , the spring of the mag would sucessfully be strong enough to push the BB in and the tappet plate back, but if the nozzle was a little bit forward, it would be the opposite...

I think that could explain that....
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Old January 17th, 2009, 18:34   #24
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might just be man, might just be....
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Old January 18th, 2009, 01:24   #25
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Quote:
Originally Posted by BORDENSNIPER View Post

The GUARDER tappet plate I put into it is a little different than the stock one, how? the ack of the tappet plate that engage the cam of the SPUR gear is a little farther back than the stock one. what does this mean? it means that the nozzle wasnt going far back enough to feed properly.

BUT, once in a wile it double feeds, and that is the direct problem of overlubing and the fact that I cut a little of the mag lip so it feeds too much at once.

problem mostly solved...pissed that GUARDER bran new one i bought was the problem...BUT im sure if I put the guarder one back in with a proper mag that has a hard spring pushin the bb's hard in, then it should be fine

Question still remains:
- If the guarder one was not adequately pulling the nozzle back, How come some times it fed and sometimes it didnt?
humm...

For better feeding, tappet plate should engage the sector gear and go back inside the mechbox earlier and a good period of time to let bbs going up.

That's why they make sector clip. Sector clip pushes the tappet plate far way back and longer time. It gives more time for bb to go up, nozzle goes further back (provides more space for bb to go into hopup chamber)

If your Guarder's doesnt go back enough, this wont help bb to go up. Not giving time for bb to go up can be fix by getting proper mag, but not fully cycling back is a bigger mechbox issue.

To reply at your last question :
It is hard to pin point one thing, but a mix of where exactly gears stopped after cycling and pressure given to bb to go up (from high-cap when scroll up) could be that.
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Old January 18th, 2009, 14:41   #26
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its hard finding the right sector clip since i bought many different verisons of gears from various companies, both torque up and stock versions and yet they ALL have differences in cam sizes.

yes the Guarder one gets engaged later than the stock KART one.

I just traded the aeg for something else but, for the next owner, if thy rally want to have proper modified parts, then I gues he can get a gear sector clip or the full gear with the clip and then put the guarder back in since that will be better than oviously having stock internals.

cheers
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