GTA
PCP - HPA - C02 Gate => QB-7X Gate -W/Co2 & HPA => : December 06, 2006, 02:45:00 AM
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Not knowing a lot about compressed air and co2 I'm just wondering what kind of fittings, adaptors, quick releases that you might find at your lacal hardware store's air tools department that could be used with the QB78 and it's various forms of power, bulk fill, PCP, etc. Will any of this work or do you have to stay with the things specially made for the QB that places like Archer sells ?
Thanks Bill
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Gotta tell ya Bill, there are not a lot of things that you can buy at the local hardware stores but many of the paintball shops have fitting, tanks, tubing/lines, control valves and such. Common brass pipe fitting can be found just about anywhere but when it comes to PCP stuff...you need to be careful as that is almost all high pressure stuff. Ya gotta be careful cuz that can cause very high, loud, and fast leaks that can be dangerous :0 :0
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These guys make tube extensions and valves for turning the qb into a pcp...
http://www.mac1airgun.com/pcpcomponents.html
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Guys! PLEASE do NOT try to use the QB CO2 tubes as PCP reservoirs! They are too thin for the pressuses required. We dont want any accidents!
Ian
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I know that PCP pressures are much greater than co2, but it's ok to use the QB tube as a bulk fill co2 tube sinse there's no difference in pressures.
Is this correct ?
Thanks Bill
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Yes, that is correct. The only variable in pressure in the Co2 tube will be caused by the surrounding temperature and that doesn't change enough to cause a safety concern. Makes a big difference in velocity though. And I do like my Co2 guns....gotta a fist full of them. They are not so hard on my bum shoulder :) :)
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Well one of the things I have been reading is that co2 is like 900 psi give or take. So most have just been charging there tubes to about 1000-1500 psi...
Im just repeating what ive heard.
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To use compressed air in a QB, you would need a regulator to give a steady 800 or 900 psi, otherwise the breech pressure and muzzle velocity would drop with each shot. Also, if charging to "only" 1500psi, you would only get a few shots before power dropped off even with a regulator. With CO2, as each shot is taken, more liquid boils off to maintain pressure, until all liquid is gone. (OK the gun chills and the pressure drops a little with rapid fire). For all the hassle of charging gear and frequent topping up with air, I would say it's better to stick to CO2; simply find a source to bulk buy the 12gram caplets. In the UK, Walther caplets from many small shops are $1.70 each as singles, but we have mail order sources where 100 caplets is only $80. To me that is economical shooting, 80cents for 30 to 50 shots, depending on tune. There must be other sources of caplets in the States than Crosman. Think of all the tyre inflators, fire extinguishers etc..
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Here at Walmart you can buy a 15 box of powerlets for $8.50, thats around $0.56 each. How much would you save if you went bulk fill and used the largest bottles they make and only pay for the co2, swap out price ?
Bill
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Up to personal preference I guess, Bill. How long would it take to recoup the cost of the bulk conversion, hose and bulk cylinder at 2 x 56cents a time. Also factor in the hassle of running out of bulk gas half way through a session and the relative hassle of refilling from bulk in general. I can understand that for paintballing, playing Rambo, bulk is the only way to go, but is it really worth the initial outlay for hunting and genaral shooting? Personal choice, but do the sums first.
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Are you going to go out, away from home, shooting without your bulk fill with you (or at least in the car)? Look at it this way, the 12gr. powerlets are a lot easier to carry for a gun that will see serious field use...can put a 1/2 doesn in your pocket...while a bulk fill is selodm near at hand when you need it in the fireld (unless you strap it to your back).