rookie tourney gun

[pat360]

I was wondering if this set up would be good for rookie tourneys or something better. pirahna sts g3 with a small nitro tank,drop forward,barrel and a 12v revy . my freinds have a team and they go in tourneys and they said i could join there team. would that be a good begginers tourny set up?:confused:

[Jake]

The pirhana is good but with a small nitro tank you won't get many shots per tank. Even with a 68 4500 you'll only get 382 at best. I would get a stock vertical feed cocker and a small nitro or run the pirhana on co2 and get a spring kit, expansion chamber, and just work with the consistency. Either one will give you plenty of firepower. Hell my team lost to a bunch of kids shooting spyders and we had 2 cockers and an impulse so good luck man.

[VeNoM]

Originally posted by Jake
Even with a 68 4500 you'll only get 382 at best.

i have a 68/4500 and i get about 1200 shots off of it.

i hope thats a typo, or you are just on crack. if you get a small 47/48 ci tank you will get about 450 shots off of it, but will that be enough for you? in speedball i easily go through more than that in a game. have you added up how much money you have to spend on everything? you could probably get a nice used cocker or mag for that much . . . let us know your budget and maybe we can help you out more . . .

[Jake]

no pirhanas run at 800 psi whereas your bushy probably runs at 300-400 psi thats why the pirhana would only get marginal shot count

[woods]

go over to the piranha blowback forum and ask this question they can give you a list of things to make it low pressure. i used a 48 3k on mine until i got my cocker with a 45 45. i added the turbo valve, ergo reg, drilled out everything to allow for more flow, sanded my valve pin, played with spring combos and made an open face derlin bolt. all this got me to around 450 range. i got about 400 shots off the 48 3k. just look around and read you'll find some good info about how to make it low pressure.

[VeNoM]

Originally posted by Jake
no pirhanas run at 800 psi whereas your bushy probably runs at 300-400 psi thats why the pirhana would only get marginal shot count

yes i know that, and my gun runs about 200 psi. but you would still get more than way more than "382 at best" off of a 68/4500, you would get well over 700, probably closer to 1000.

[Jake]

woods i agree with a couple of upgrades you can get plenty of shots off a tank on the pirhana

However Venom, My way of getting the number that i got is this


68(#of cubic inches) x 4500(psi per cubic inch) = 306,000

306,000/ 800(standard operating pressure)= 382

He may be able to get more then that but not very much more

However with wood's modifications he could get 680 shots

Thats how I figure it so if I'm doing it wrong let me know

[elTwitcho]

Originally posted by Jake
woods i agree with a couple of upgrades you can get plenty of shots off a tank on the pirhana

However Venom, My way of getting the number that i got is this


68(#of cubic inches) x 4500(psi per cubic inch) = 306,000

306,000/ 800(standard operating pressure)= 382

He may be able to get more then that but not very much more

However with wood's modifications he could get 680 shots

Thats how I figure it so if I'm doing it wrong let me know

That's very very very wrong. Paintball markers just plain do not work that way, and your calculations dont even take volume per shot into account. So.... yeah those numbers can be pretty much tossed out. You'd be looking at more around a thousand shots with a piranha on a 68/45

[Jake]

really?

There has to be some sort of theory to figure out how many shots you can get. Maybe we need to make one up. But yeah i didn't think about the volume per shot. So my mistake

[elTwitcho]

I'm sure there is, but it's difficult to calculate the volume per shot on a marker, unless it's a fixed volume marker. Otherwise you have to try and figure out exactly how long the poppet is open and what not, and that's just gonna be difficult as hell

[TheZephyr]

If the operating pressure is 3000psi on the tank, you usually multiply the # of cubic inches by ten, and then you get a bit more depending on your gun. My 51 ci tank gets about 600 shots i believe, but I haven't tried to count yet.

[BlaziN AzN]

wooooow this almost made me cry u guys r slow for 30k tanks do (leyts say its a 45/30 u would do 45 times 10=450) thats on avergae and for the 45k tanks just do same thing but times 15 instaed of ten .....if u get confueed vist the air forum and look at the top sticky peace

[BlaziN AzN]

i get bout 1000 w/ my 68/45

[phatboy]

Jake: the main mistake of you problem lies in the exponents. Because the volume of the tank is given in cubic inches it is not compatible with psi which is pounds of pressure per square inch. If you were to set up that problem with numbers it would be:
68in^3*4500psi (pressure/in^2)=306,000in^3*psi
Now you need the cubic inches (volume) of the route the air travels in the marker or you get 450in^3. If anyone can tell me what that 450 cubic inches means, please reply. I'm guessing that if your shot is 1cubic inch of air let through then you would get 450 shots per fill, but I dont think a marker lets out 1cubic inch per shot, most likely less.

Note: the ^ sign shows that the number following it (^) will be an exponent.

[Jake]

I've always hated math so i'll just shoot a tank and if its not enough then sell it and get another