Noah
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Posts: 91
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Post by Noah on Nov 13, 2003 21:02:54 GMT -5
I'm replacing the spring in my FAMAS, and I can't get the spring out of the spring guide. Suggestions?
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Post by Savage on Nov 13, 2003 21:27:18 GMT -5
You sure it's the spring guide you can't get it out of or is it actually the piston?
I'm not familiar with the Famas, but if it has a ver II or III gearbox the spring guide should literally fall off the end of the spring since there is no retainer of any sort. The piston, however, is a completely different story.
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Noah
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Posts: 91
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Post by Noah on Nov 13, 2003 21:34:37 GMT -5
filairsoft.com/airsoft104.htmI found this guide, which has the same white spring guide that mine has, and it suggests carving it to get to the screw(take a look at the page). Do I have to reseal it after carving it, because wouldn't it let air out? Thanks in advance.
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Post by Knief on Nov 13, 2003 21:39:05 GMT -5
Indeed, the spring guide should slide right out of the spring (or have been shot out faster than any bb you've seen when the mech box popped open). Now, if it is the piston you're talking about (the longer white plastic piece facing the business end of the gun), then there is a good reason that it won't come out. The spring is screwed into the piston. This guide here explains it better than I can, read over the whole thing, but there is a section a little more than half-way down the page that talks about getting the spring out of the piston. www.airsoftplayers.com/mechbox/tutorial.aspThe thing to remember, you can always remove more material, but you can never replace it. And make sure you don't squeeze the piston head at all or you'll ruin it's shape and seal with the cylinder.
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Post by Blag on Nov 13, 2003 23:24:43 GMT -5
i just did this to my piston a coupe days ago, all i did was a a exacto-knife and where the very very small hole already is in the piston head. just instert the tip if the knife and start to slowy turn the knife in circles as you are taking away plastic from the piston head you will slowly start to reveil a screw (sorry but im having a brain fart right now its the other kind of screw other than a flat head..). then after you unscrew the screw the piston head will come off (be sure to not forget the o-ring when re-assemblying the piston). then the spring along with a piece of metal will fall out the end of the piston and vvvvwala.
EDIT: ok i remember now its a phillips screw.
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Post by Munin on Nov 14, 2003 1:33:10 GMT -5
The part you're referring to is not the spring guide, it's the piston.
The neater you can make the incision into the piston head, the better off you are. I used a dremel tool on mine to carefully excise the material, which gave me a minimum of marring and scratching of the piston head.
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Noah
New Member
Posts: 91
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Post by Noah on Nov 14, 2003 20:36:41 GMT -5
Thanks for the help, I finally got the spring out of there...but another question, if you don't mind.
"Next reattach the piston head to the piston- you will need to reinsert the metal spacer back into the piston- there is a metal nub sticking out of it that goes into a corresponding hole inside the piston. Get that lined up, insert the metal spacer, spin it inside the piston with a screwdriver until the nub is in the hole. Then, take your old spring, and insert the flat end back into the piston- this is only to apply pressure to the spacer. Then start screwing the piston head back on, until it is tight. Remove the old spring- it wont be needed anymore. Take out the new spring- the PDI line comes with plastic washers- place one in the piston on top of the spacer. You can now place the spring assembly to the side once again."
My old spring has a part that hooks into the metal spacer, but my new spring has no such part; it's simply a spring. Can someone give me some insight please? Thanks in advance.
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Post by Knief on Nov 14, 2003 20:46:18 GMT -5
It doesn't need to hook into it. The new spring will just sit in place. The pressure from the piston and spring guide will keep it in place. I really don't know why TM decided to screw their spring into place.
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Noah
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Posts: 91
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Post by Noah on Nov 14, 2003 22:37:21 GMT -5
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Post by Knief on Nov 15, 2003 13:11:07 GMT -5
It looks like your pison isn't riding in the tracks, it looks like it's rotated off center in that fourth picture.
I'm assuming that your bevel gear is set all the way back against the anti-reversal latch, correct? Then I think the sector gear (the one with teeth on only half of it) should be rotated just a hair further so the front tooth is even or a little bit higher than the back tooth relative to the east-west axis.
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Noah
New Member
Posts: 91
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Post by Noah on Nov 15, 2003 13:52:48 GMT -5
I can't seem to get my piston and cylinder to stay down, it does go down, however, once I close my mechbox(although never sure if it's on the track or not..). I got it to fire once, it doesn't quite push the bb through, and it only fires once, then I have to press the anti-reversal latch before it can fire again. What do you think the problem is? Thanks in advance.
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Post by Knief on Nov 15, 2003 14:15:51 GMT -5
Sounds to me like the gears aren't timed right. The last couple teeth on the sector gear are catching on the last couple teeth of the piston. Then the gears slip backwards when you move the anti reversal latch out of the way. Rotating your sector gear further forward should do the trick.
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Noah
New Member
Posts: 91
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Post by Noah on Nov 15, 2003 17:26:33 GMT -5
Thanks a lot to everyone who gave me the information I needed to make the gun, especially Kneif, thanks a ton dude. My gun shoots like a beauty now, thanks a lot!
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Post by Knief on Nov 15, 2003 18:11:43 GMT -5
No problem man, I'm glad I could help you out. Enjoy your gun!
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