ShadowTank

Maybe I misunderstand the physics involved but if the volume of the barrel is more than the amount of air being pushed through the barrel from the "bladder" when you recock the Nerf CS-6 Recon, then wouldn't there be a vaccum as there is less air than needed to push the dart out of the barrel? Or is that why the barrel is so much wider in dia. than the darts? I just bought a reeming tool to reem out a 1/2" CPVC Pipe so that the standard streamline nerf dart can go down the barrel without restriciton, which basically reduces the dia. of the barrel, but before i do that, i'm concerned a vacuum will actually form, causing the dart to fire a shorter distance than if i leave the barrel alone. Has anyone reduced the barrel length to match the size of the bladder? i like for "form factor" of the CS-6 Recon (it looks similar too a storm trooper rifle once it's painted black!) and I'm modifying the "slider" to recock the main spring so it's located similar to a real shot gun underneath the barrel, so shortenign the barrel will cause problems for that. I've done a search for mods on this gun, and haven't found anything posted thus far that answers this question. There are some excellent mods already posted, and thanks to all who have taken the time to post them. Though I am going to go a slightly different route to modify mine, they have given me excellent ideas!! Any thoughts? Thanks!!

ShadowTank

I am making a a new turret/barrel assembly for what I'm calling the ST-3. I am using the Nerf Rapid Fire 20 as a guide for it. For the RF-20, the opening from the piston to barrel is about .25" in diameter. Because of certain design issues I may need to reduce that opening to .125" in dia, and maybe even .094" in dia. FOr the .125" dia to work, the hole between the piston and the barrel would be off center. So my questions are this.

What issues can I expect by reducing the hole in the first place?

Would it matter if the hole is "off center" or not?

Just as a reminder, Pressure is constant/consistent using CO2 with a Low Pressure Regulator since pressure is a factor.


Thanks!

Shadow Tank

Would anyone have any idea what is the maximum air pressure (measured in PSI) that the Rapid Fire 20 would have when the pressure is released from the air bladder ?

Shadow Tank

Does there need to be a seal behind the middle O-Rings so that the part of the cylinder where the main spring is needs to be sealed? Or Can I cut into the clear plastic as long as the area in front of the Orings in the middle of cylinder is sealed am I ok?

THanks

Shadow Tank

The new version of the Modified RP 20 I am working on, I plan to have 4 circular rows of darts, fired by two air cylinders. Only one will advance the actual ammo clip. I am using CO2 so I have plenty of pressure to supply both. I have had great success using CO2 with what I call the ST-2 which is the RP20 modified to use CO2.

I am custom making the ammo clip. My question is, if I wanted only one row to fire at a time, I would have to have the barrels in the ammo clip offset by 1/4 instead of 1/2 a barrel. Which means when one of the cylinders fire, they would be firing into an obstruction. Would this cause the cylinder to become damaged becaue the CO2 has no where to go. the only other option I can think of is not to use the cyliner, and just run a line to the other two holes and when pressure is released by the trigger, it will flow and where there is an opening for the barrel, it will release the CO2. Sure there will be some leakage, but only when I'm firing.

Any thoughts other than I'm nuts for doing this?

Shadow Tank