Tippmann 98c Problems

[BiNx0]

Hi I own a Tippmann 98 Custom Marker. I bought it refurbished about three years ago and it has always worked fantastic. Recently I've bought a few upgrades for it. More specifically a flatline barrel, cyclone feed system, response trigger and the conversion kit so I could use both on my marker. Before I had purchased the response trigger and flatline, I used my marker and it performed perfectly. The next time, before adding anything else, except an ironsight, it had problems like feeding more than one ball into the chamber when firing once, balls breaking inside the chamber itself, and drastic changes in velocity of the paint when fired (the first shot will basically drop out the front, second will shoot extremely far and quick, and the third will cause the gun to sputter, shoot two balls and the rear bolt will fail to cock back). Strange I know, but nine times out of ten thats exactly what would happen. I brought it into my local paintball store and they went through it, looked at all the seals and gave it a clean bill of health. So thinking that it was just the CO2 bottle I was using, I bought a brand new 20 oz tank. Installed the response trigger to give my military family a run for their money, and same problems. I know my fair share about how the guns to work. I live in Arizona and it was about 70 degrees outside, and I'm pretty sure that's pretty good conditions for the CO2 to operate in. I also have a collapsible stock if that makes any difference at all and a iron sight like an M16's. And it seems to fire and re-cock great when the tank is connected but no balls are added.

If anyone has any ideas about what could be wrong it'd be tight.

Thanks

[CockerKiller520]

try checking to see if the sear is getting a good grip, sounds almost like its slipping to me seeing as how it sputters and then will fire once and not re-cock.

also consider possibly a spring package if it does seem as though the sear isnt gripping, look at the hammer to make sure it isnt rounded at all where the sear grips.

it sounds like an air issue to me, and that makes the most sense seeing as how youre using co2 at an optimal temp and didnt have any issues with any mechanics of the air system, nothing seeming to break down at all.

did you take it apart at all and forget any parts? say cleaning/greasing the marker?

[speedy2k4]

are you using basement balls? aka balls that have been sitting in your basement since the time of the dinosaurs?

low quality, improperly stored, dirty/wet/whatever it may be, balls that arent round would cause every single one of those problems. which seems more likely than 3 or 4 seperate things going wrong with the marker to cause it.

however if you are using new quality paint and still having the problems, double feeding would be caused by the rubber finger detent in the front of the gun being worn out or missing. this could also contribute to the bolt chopping paintballs inside the breech, although it is bound to happen from time to time when using a gravity fed loader. additionally, cyclone feeds will often cause breaks with fragile paintballs. paint breaking inside the barrel can happen often with fragile paint and a flatline barrel because of the friction and forces acting on the ball to cause it to spin. velocity spikes and misfiring can be caused by dirt or grease inside the breech and barrel, fluctuating temperatures with co2, worn seals inside the gun in addition to other things.

but again, all of those symptoms can be caused by bad paint. gets hot in AZ, if the paint was stored in the heat at any time through the year it can cause them to slightly melt or expand causing all sorts of feeding and velocity issues. not all that much that can come out of tune with a basic tippmann 98.

[Corrupted355]

The most common problem I find when people install a new Flatline is velocity. People think that they can still shoot at 280-300 fps, and you really can't. The Flatline is designed to operate between 240-260 fps. If you're not shooting in this range, you should be.

You're also going to want to check your detent. It's possible that you installed it backwards, and chopped it off when you fired the first paintball. This could account for your low velocity on the first shot (paintball rolls down the barrel a short way) and your double feed problem. The detent is one of those things on a Tippmann that most people tend to forget about, so it's entirely possible that the tech at the pb shop never even looked at it.

[speedy2k4]

forgetting about tippmann detents, yeah. its generally the part that after you clean out the gun, oil it, put it back together and tighten down the screws. then you look down and see the detent sitting on the table and blurt out a series of profanities.

then continue to do that with every other gun when cleaning 50 rentals. eventually you get to the point where you decide it is an "optional" part and just scratch your head and say "i dunno..." when rec players ask you why paintballs keep rolling out of their barrel.

[nwc08]

did you tune the RT? You might need to do that or change out the O-Rings in the power tubes valve, put a few drops of oil in your air line at the ASA then run air through it. Another thing could be that you are using CO2. It is cheaper to start with CO2 but High Pressure Air Tanks are really the way to go.