Question About Pump Volumes
Posted 30 August 2009 - 09:28 PM
Thanks in advance.
Posted 30 August 2009 - 09:54 PM
Church... gotta soak up that Jesus!
Posted 31 August 2009 - 04:01 AM
Posted 31 August 2009 - 10:34 AM
Posted 01 September 2009 - 05:15 PM
The pumps on Big Blasts and Berserkers are tiny, the stroke is three-four inches, if that.
For your integration, if you leave the pressure relief valve in place and choose not to band the bladder, the relief valve will kick in long before the BS tanks have any problems. BS tanks can handle a higher pressure than most NERF air tanks (I take mine to 60 PSI frequently). The pressure in the bladder and the tanks will be at equal pressure while pumping. If you want different pressures you'll need some sort of valve (ball valve, toggle valve, etc.) to allow air to be pumped into only one or the other.
You seem to understand this pretty well, but your phrase "path of least resistance" doesn't quite apply in this case. The pressure you apply via the pump will be felt equally and undiminished throughout the entire system. This means that if your bike pump (assuming you use that) reads forty psig, then everything that holds the air (tubing, tanks, bladders, valves, etc.) have forty pounds of force per square inch exerted on them. I hope that was more helpful than confusing.
If you're interested in a flow path/schematic for your integrating with the necessary check valves, etc. labeled, let me know and I'd be happy to create one for you.
Posted 01 September 2009 - 08:09 PM
Another thing, though. The rf20 bladder holds air at pretty low pressure, right? Quite a bit lower than would normally be in hornet tanks? This would decrease the range from the hornet tanks, but expanding them could raise the range to compensate some for the lower pressure, correct? I don't want to band/inner tube the bladder because I've heard that the stock rf20 tubing doesn't hold up well to that, and I don't necessarily want the extra rate of fire associated with the banding. I find myself going through ammo pretty quickly as it is.
Posted 01 September 2009 - 09:07 PM
If you do decide to attempt operating them at different pressures, just throw in a ball valve where you would have put the check valve before the bladder. After the relief valve kicks in you could close the ball valve and continue pumping to further pressurize the hornet tanks. Just an option to consider. Also, if you're concerned about ROF for the RF20, remember the dial that changes the speed; you could just turn it down closer to "single shot" mode and have slower firing, even with a banded bladder. Again, just something to think about.
Posted 02 September 2009 - 01:04 AM
Time for a parts run!
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