So I was talking to my friend in the killbox at our last game and he stated that he couldn't get his 98 custom to work since he had no CO2 and that for some reason it was "so old" that it was "before" the HPA-tanks and therefore it would not be able to run off of HPA.

I told him that physics say that as long as it is the same pressure it makes no difference (as long as it is not a marker designed for liquid CO2). He didn't believe me and said that the internals are different from the "newer" ones.

what would be the best way to prove to him that it can run off HPA (i think it is missing some parts to so airing it up is not an option)

The internals are slightly differnet on the older 98's however all paintball guns can run on compressed air with no problems.

yup

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Well, almost all of them. Some of the older tippys can have low velocity issues when using HPA, but I don't see that being an issue with original 98s.

My 98 Custom is about 10 years old and it runs HPA just fine. My 98 has actually used HPA for 5 years now, though there are others out there that have used it longer.

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West Coast Paintballer and 98 Custom Owner!

Both CO2 and HPA (with a high pressure regulator) output around 850 psi. So any 98 should work with either.

Some HPA tanks have a low pressure regulator on them and output around 450 psi. I've seen where several operators have tried a HPA tank and it didn't work because it was for a low pressure gun.

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that's exactly what i said... but i've heard that the pro-lite can have some problems but the pro-carbine should run just fine.

like beer said it could just be that the tank was for a low pressure marker and that was the root of the problem.

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Don't put someone down for being creative with their marker. That's just not right

when one person says that someones idea is stupid, that idea can go on to change the world.



Its not the number of markers you own it is what you have done to make them your own style of marker.

It should work great on all Tippmann's. There are many field that run exclusively HPA on their rental guns including M98, M98 Customs, and Pro-Lites (My Favorite Rental Gun).

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Oh my gosh. So. Much. Misinformation.

First off, I have heard of 98's and A5's not being able to chrono up high enough on compressesd air. It's probably just due to the springing. The output pressure on the compressed air tank is probably further from the valve's sweetspot. CO2 in ideal conditions will output at 800 PSI, but we all know there is no such thing as ideal conditions. Any difference in temperature will change the pressure. So even if a compressed air tank is outputting at 850 PSI, a CO2 will, more often than not, be either higher or lower in pressure. It will never be the same. And because of that, the velocity will be different. And yes, CO2 fluctuates enough that a 100 FPS difference is very plausible.

Secondly, not all guns will run off compressed air. There are several Tippmanns that require liquid CO2 because the internal air passages are drilled so small that liquid CO2 is the only thing with enough potential energy to propel the ball.IIRC VM-68's/EMC-68's/PMI-3's require the use of CO2 as well.

Thirdly, while there are some differences in the internal design of newer 98s compared to older 98s, none of these differences will affect how it chronos. The only differences have been air fittings and trigger setups.

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Model98.org, Where Tippmanns Have No Limits

GONE TIL NOV 2013