The powertube has a Cyclone/RT port on the side of it that lines up directly with the cavity of the valve that supplies air to the ball. When the hammer strikes the valve pin, it releases gas, which then routes around the valve through channels and to the ball and at the same time, also goes through the port previously mentioned and supplies air to the Cyclone. If this is true, opening and closing the port would affect the velocity of the ball, in addition to affecting the functionality of the Cyclone.
Some people believe that the Cyclone operates on blowback gases, the same gas that is used to drive the hammer back and recock the gun. Some believe that no gas is unused in the system. If this theory is true, opening/closing the cyclone port shouldn't affect the ball's velocity and will only affect the Cyclone.
Using packing tape over the powertube's Cyclone/RT port and using a port plug, I was able to block off any possibility of air getting to the Cyclone. I took 30 shots with its blocked off, took off the tape and reconnected the Cyclone, and then took another 30 shots.
Here is my setup:
-Polished A5 receiver halves
-Orange Howizter front bolt
-stock powertube w/ FVA flushed
-2Liter Plus Dual w/ small etension cap and HP spring (550psi max)
-ION threaded barrel adapter
-ION threaded Freak back
-Blue Maddmann spring
-Gold Cup oil
-1/8" banjos and hoses for Cyclone
-TechT lightning rod
-stock feeder cylinder
-HPA on remote line
-CP on/off ASA
-F1 Shooting Chrony
Here is my data:
As you can see, the average speed did drop by about 5 fps. I was quite surprised at this, expecting it to drop more. Also worthy of mentioning is that the consistency was barely affected as well. So it seems that the Cyclone being attached has little affect on ball to ball consistency but more so on it's velocity. Since the velocity was affected, it seems pretty safe to assume that it does NOT operate on blowback gases but rather shares the same air source that accelerates the balls.
Edited by Lord Odin, 29 June 2009 - 09:36 PM.