Need Explination (Maybe a Diagram) on a Valve

[iamthewalrus]

Ok, does anyone here know how the valve on Tippmann's 98C paintball gun works, or any other valve similare to it, I think they are called hammer valves, and if they arn't then why did u say they are drac... . Im looking for a detailed explination on their operation, not "the hammer moves forward and hits the pin and it fires". Any sort of diagram would be greatly appriciated also, if possible, thanks. Anyone who can make a detailed and/or moving digram (detailed is more important) can have 1500bux from me too.

[carlbelcher]

I hope this helps. I found a 3D animated model of a generic paintball gun valve it looks like its pretty good, worth a look.

http://entertainment.howstuffworks.com/ ... 3d-gun.htm

[frogy]

I work at a paintball field in Alliance, Ohio called TPA and I'm there UN-offical TECH, but still a tech, so your in luck...


Tippmann calls their valve a "power-tube", I'll write an explaintation then draw a picture for you....

A ram in the back of the gun is attached to a spring which keeps good tension on it, the ram is being held back by a sear, which is really just a bar that moves out of the way when u pull the trigger....

When you pull the trigger you trip the sear, making it fly foward from the string expanding... While the spring pushes the sear foward the "linkage arm" on top of the ram is pushed foward... The other side of the linkage arm is attached to the bolt (the delrin plastic peice rod type thing)...

So when you trip the sear, the ram and the bolt move foward simutaneously, the bolt pushes the paintball foward in the chamber and seals the chamber while doing so...

Finally the ram hits the back of the power tube which releases a measure ammount of co2, then the power tube vents air backwards pushing the ram back in place, compressing the spring and re-locking the sear...

When the gun releases the co2 the paintball fired and when the ram moves back, it pulls the bolt back with it, causing the chamber to be un-sealed and allowing the next paintball to drop in.

Edit:
Update:
Here's the picture I had to draw it up, so it took a while
<img src="http://img161.imageshack.us/img161/5906/tippmann9rv.jpg" border="0" width="708" alt=""></a>

[iamthewalrus]

Sorry froggy. Maybe I wasn't clear enough as to what I want explained. I know how a Tippmann itslef work's, I'm actully working on making mine full-auto. But what I need to know is how the Power Tube itself works. Sorry for the misunderstanding. And Carl, I've seen that be for and it's not the same kind of thing I'm trying to figure out, sorry.

[frogy]

When the ram hits the Power-tube air is released foward to shoot the ball then backwards to push the ram back.

I think to make it full auto you have to remove the sear so it never catches and just keeps cycling.... But to do this you would need an air source with a very fast recharge rate because since it fires so fast it would be consuming a lot of air.

You could make your own Response trigger by simple putting a hose from the ram's chamber to a piston behindd the trigger...

[iamthewalrus]

Ok, again, sorry for not being clear enough. What i need to know is how the internal parts of a power tube work. I need to know how this part of the gun works internaly.....http://www.geocities.com/iamthewalrus1113/untitled.bmp

Edit: Ok, thanks to frogy who told me what the valves are called I finally found a site on google that explains eveything i need to know on it, execpt how a volocity screw changes the volocity. The site i speak of is http://www.warpig.com/paintball/technic ... ndex.shtml
A last question i have is would i be able to machine my own power tube out of aluminum and have the walls be about 5mm thick and hold the pressure of a co2 canister??

[noname]

frogy, could you draw a diagram on how to put a hose to the ram's chamber? I would want to make myself a response trigger but need to know how.

[frogy]

I'm not accually sure how to do this now, I did it to my friends gun, but I think he must've bought a new power-tube off EbaY or something because the RT has a power-tube with an extra hole in it that vents air out to a ram behind the trigger, it doesn't tap into the rams chamber....

This is the ram behind the trigger, notice that it goes out the side of the gun and not up into the rear bolt (i was referring to it as a ram) chamber....

<img src="http://images.amazon.com/images/P/B000A ... ZZZZZ_.jpg" alt="">

[iamthewalrus]

Frogy, could u explain to me how the velocity screw works? like, what it does to slow or speed up the velocity.

[noname]

If you screw it right, it goes down into the gun more and cuts off more of the Co2 flow. If you screw it left, it will come out and widen the flow.

[huse_spud]

righty tighty, lefty lucy

[frogy]

Hmm... it is true that the tighter you make it the less air comes out, but right now I'm not sure how it works.... Since I work on 98c's a lot I should know, but I barely ever have to work on the power-tube or valve....

Inside the Valve is a "valve plunger"... I'm not sure if the velocity screw going in tightens the spring on the valve plunger or if it just lossens the flow out of the front of the power-tube...