[Bad Lamb Boy]

I have a 98c and when I dry fire it with no paint or air hooked up, the bolt goes forward and it (I don't know how to desribe it) thumps a few times before it stops. With my friends newer 98c it just goes forward with one quick thud. Should I get a new spring? Would that make it more efficient? I was also wondering if a lighter rear bolt makes it more efficient.

[Not_You]

it is acting like it is out of air, try turning up the velocity or refilling your tank

[Z3R0]

How old is your 98? It may have been one of the ones with a defective sear, or it's just worn out. Either way, Tippmann can send you a new one, I believe.

It could also be low air, but I doubt it's your velocity, since all the velocity adjustment screw on a 98 does is slow down the CO2/HPA before it contacts the ball, which means it really has nothing to do with the hammer (as far as I know).

-J'92

[euglow54]

He said it makes that sound with NO air hooked up. Sounds like a sear issue to me.

[Z3R0]

True, missed the no air part. So it MUST be a sear issue. I don't see what else could cause it, at least.

-J'92

This post has been edited by Jaeger1992: 12 February 2007 - 01:55 PM

[noobiekilla]

Same thing happens on my Spyder Victor, I have no idea what the problem is though.

[Bad Lamb Boy]

Sorry, i didn't mean that it bounces all the way back and doesn't lock with the sear. I just meant that it bounces a few times off of the center gas chamber thing. And this is WITH OUT air hooked up (just to clarify that). It's probably no big deal, it just bugs me because my friends tippmanns don't do that.

[D.E.A.D. EYE]

check your rear spring and make sure it isnt like rusted(doubtful lol) or damged. check your sear for like srachs or broken off pieces.

[Bad Lamb Boy]

Both are in fine condition. I gues the spring is just getting a little old and not as stiff and springy.

This post has been edited by Bad Lamb Boy: 12 February 2007 - 08:29 PM

[Z3R0]

Let me get it straight:

Your gun has no air on it, and you are cocking it. When you release the hammer (pull the trigger), the hammer travels forward, but instead of halting all at once, it "bounces" several times?

If that's the case, I don't know what it is. Perhaps you've got a o-ring out of place and it's being cushioned, or there's some other obstruction?

-J'92

[Bad Lamb Boy]

Jaeger1992, on Feb 12 2007, 09:38 PM, said:

Let me get it straight:

Your gun has no air on it, and you are cocking it. When you release the hammer (pull the trigger), the hammer travels forward, but instead of halting all at once, it "bounces" several times?

Yep. it's just like the spring isn't pushing hard enough. The gun shoots fine when it's aired up and has paint.

I do have another question for you guys. I have a rear velocity adjuster and I was wondering if I tightened it if that would make it stop doing that. The only problem I have with that is, doesn't a more forcefull spring/ bolt make that gun use more gas when it's aired up? Does it make the gun more gas efficient if I have a looser spring? I heard a guy talking about that (the gas efficiency thing), but I can't remember exactly what he said.

[Dark Shadow Hunter]

It does sound as though you have a problem. I bought my 98C used and it does not do that at all. You may have to take it in to a proshop and have it looked at. I have no idea what to do in that situation.

[Z3R0]

Bad Lamb Boy, on Feb 13 2007, 02:23 PM, said:

Jaeger1992, on Feb 12 2007, 09:38 PM, said:

Let me get it straight:

Your gun has no air on it, and you are cocking it. When you release the hammer (pull the trigger), the hammer travels forward, but instead of halting all at once, it "bounces" several times?

Yep. it's just like the spring isn't pushing hard enough. The gun shoots fine when it's aired up and has paint.

I do have another question for you guys. I have a rear velocity adjuster and I was wondering if I tightened it if that would make it stop doing that. The only problem I have with that is, doesn't a more forcefull spring/ bolt make that gun use more gas when it's aired up? Does it make the gun more gas efficient if I have a looser spring? I heard a guy talking about that (the gas efficiency thing), but I can't remember exactly what he said.

I don't have an RVA, so I'm not sure quite how it works (not as in what it does, but how the spring tension will affect how you tune your velocity. I assume a higher tension would increase velocity though, not a loose spring)... but from what I understand, a 98 always uses the same amount of gas to fire, because all the velocity screw does is slow it down while it's pushing the ball (it extends into the gun somewhere near the valve I assume, but I haven't looked to see exactly where when I've opened my gun). So a loose spring wouldn't make you more air efficient. But it does sound like the loose spring could make it do that.

I don't know really how to do it properly with an RVA, as in how far in/out the velocity screw should be before you start using your RVA to change it. Someone else will probably be able to answer it (I bet it's going to be Maj. Tom, too ).

-J'92

This post has been edited by Jaeger1992: 16 February 2007 - 01:57 PM

[DVLCHLD]

This has nothing to do with the sear. If your marker can shoot a paintball at 300 FPS when it does have paint and air in it then it's not a drive spring issue. When you pull the trigger the hammer moves forward. The O-ring on the hammer is forced into the rear opening of the power tube. Wether or not the bolt sticks in the power tube or bounces back out depends on how tight the seal is between this O-ring and the power tube and how strong the spring inside the valve is. So if your marker can fire a paintball at 300 FPS then it's OK and I wouldn't worry about it. To see the O-ring I'm talking about just cock the marker and look in the slot right there where the cocking handle is. See that thin O-ring that goes around the hammer? That's it. You can spin it around the hammer with your finger to inspect it. Your markers fine.

[Nelos]

My 98c doesn't have a rear spring anymore. I messed up the old one so I've been trying to make a new one. Whenever I point my 98c in the air, though, (when it's cocked) the spring comes off the little stem it sits on and causes my marker to jam. Would it damage my marker if I played without it?