i'm pretty sure it is the volume of the gas being released.. not the time for the rocket valve/flute valve to close that determines the initial bullet velocity.
higher output valves and hammer springs help rapid release of pressurized gas into the barrel cavity resulting in higher FPS.
Johhnny/RA-Tech I don;t know if you are aware of this, FPS change doesn;t typically shown up until the NPAS is on its maximum length. I believe the width of cylinder have to do with it. Why didn't you guys make an bullet shape cylinder so FPS variation can be made easier? Currently to have a RA-Tech Custom WE M4 at 380fps w/ 0.2g you need to open to the point ~1.25 revolution can seperate the cylinder and disc valve.
Very good video but I had a question about the comment made at 2:30 mark. Where you say "Actually we have to tell you" about the cylinder rotating together and inserting something small to stop the cylinder. Is the cylinder not supposed to rotate together? What do you mean by that comment? DO YOU MEAN THAT THE CYLINDER IS NOT SUPPOSED TO ROTATE AT ALL? ONLY THE DISC VALVE IS SUPPOSED TO MOVE WHEN ATTEMPTING TO ADJUST IT?
@TheUTNUT If the cylinder move with the disc valve when you try to adjust it the overall length does not change, therefore you should prevent the moment of the cylinder.
Very good video but I had a question about the comment made at 2:30 mark. Where you say "Actually we have to tell you" about the cylinder rotating together and inserting something small to stop the cylinder. Is the cylinder not supposed to rotate together? What do you mean by that comment? On mine the 2 pieces of the cylinder fit together like 2 puzzle pieces. It doesn't appear that you can stop it from turning together as one piece, while adjusting it with the tool.
Hey, RA-Tech a little random thought came in mind about the Tanio Kobas twist barrel. Because the barrel only works for low presser gas and 330FPS or lower. Is it possible to make a "rifled" barrel for higher FPS guns? Like increase or decrease the twist rate to make this work?
@1776PatriotTeen In fact all modifications that make the gun stronger are illegal or require a gunsmith to do it and a new permission and all that stuff, new F in Pentagon. A lot of people still do it and the police basicly doesnt care as long as its below 7.5J and Semi auto but when they take it and test it youre screwed. Sry for you that you research on wikipedia.
@HDROSpieler123 Or you can just install yourself. It's not that hard. Your government isn't going to know EVERY single airsoft part! Oh and by the way, simple solution. KEEP IT ALWAYS BELOW THE LIMIT! They won't know if you don't tell them. They will not look completely thoroughly into the gun. That would violate even your countries privacy laws. And finally, they would need the tool supplied to even make the adjustment. Just ship the tool separately. That's what my friend did to his WE M14...
@1776PatriotTeen I know that you can do it yourself but to stay legal you have to go to a gunsmith. But the German law is not very specific about airsoft guns so you can do a lot to your guns without having too many issues with the police. I mean there are a lot of player who just use a body with a F in Pentagon on it and build a complete new gun of course illegal, and use it without problems. But its just safer. Not that i care too much about it. Btw the WE M14 is very nice, have it myself.
Very good explaination!
Lexuk1 1 month ago in playlist Uploaded videos
RA-tech, please make your own GBB's!
chemolovesairsoft 1 month ago
Thanks Ra-Tech! Very appreciated!
SNIPEDUDUDE 2 months ago
This has been flagged as spam show
Does the length of the spring matter? I might have cut a little too much while installing the Open Bolt NPAS.
sparta139 3 months ago
Comment removed
sparta139 3 months ago
The research done on Mcarterbrown seems to show that less dwell time and faster discharge rate equates to higher gas efficiency.
Low pressure does not always mean high efficiency.
Just some FYI. Not relevant to video.
Maybe RA-tech should make their own GBB.
One that doesn't suffer from cooldown.
Wabaanimkii 3 months ago
Very well done presentation!
hackzoerz 3 months ago
wow... extremely professional... and well executed
AsianJewAirsofter 3 months ago
i'm pretty sure it is the volume of the gas being released.. not the time for the rocket valve/flute valve to close that determines the initial bullet velocity.
higher output valves and hammer springs help rapid release of pressurized gas into the barrel cavity resulting in higher FPS.
swibowo 3 months ago
Johhnny/RA-Tech I don;t know if you are aware of this, FPS change doesn;t typically shown up until the NPAS is on its maximum length. I believe the width of cylinder have to do with it. Why didn't you guys make an bullet shape cylinder so FPS variation can be made easier? Currently to have a RA-Tech Custom WE M4 at 380fps w/ 0.2g you need to open to the point ~1.25 revolution can seperate the cylinder and disc valve.
kullwarrior 3 months ago
Does the NPAS do anything with the origional FPS?
Asdfghjklqwertyop 3 months ago in playlist Watch Nowww
Well explained...good job RA-Tech...
plh200976 3 months ago
On your King Arms NPAS video it doesn't look like you stick something small in there to stop the cylinder from moving. Why not?
TheUTNUT 3 months ago
@TheUTNUT wa system dont need innser somthin to stick.
ratech5915 3 months ago
Very good video but I had a question about the comment made at 2:30 mark. Where you say "Actually we have to tell you" about the cylinder rotating together and inserting something small to stop the cylinder. Is the cylinder not supposed to rotate together? What do you mean by that comment? DO YOU MEAN THAT THE CYLINDER IS NOT SUPPOSED TO ROTATE AT ALL? ONLY THE DISC VALVE IS SUPPOSED TO MOVE WHEN ATTEMPTING TO ADJUST IT?
TheUTNUT 3 months ago
@TheUTNUT If the cylinder move with the disc valve when you try to adjust it the overall length does not change, therefore you should prevent the moment of the cylinder.
kullwarrior 3 months ago
Very good video but I had a question about the comment made at 2:30 mark. Where you say "Actually we have to tell you" about the cylinder rotating together and inserting something small to stop the cylinder. Is the cylinder not supposed to rotate together? What do you mean by that comment? On mine the 2 pieces of the cylinder fit together like 2 puzzle pieces. It doesn't appear that you can stop it from turning together as one piece, while adjusting it with the tool.
TheUTNUT 3 months ago
THK keep working.
knightxxix 3 months ago
This was really informative! Good job Ra-Tech, Im gonna get the NPAS for m4 GBB M4!
MomentumAirsoft 3 months ago
Thanks a lot for this video. Extremely well and simply explained.
Aligakore 3 months ago
i think it's amazing that you guys found out this way to adjust the power of a GBB rifle.
kkww8963 3 months ago
Hey, RA-Tech a little random thought came in mind about the Tanio Kobas twist barrel. Because the barrel only works for low presser gas and 330FPS or lower. Is it possible to make a "rifled" barrel for higher FPS guns? Like increase or decrease the twist rate to make this work?
SugarFreeTargets 3 months ago
Very professional Ra-Tech..well done!
M4Strider 3 months ago 29
Can you make a NPAS which cant make the gun stronger? Cause the ability to make the gun stronger can be a problem in Germany
HDROSpieler123 3 months ago
@HDROSpieler123 You can lower the feet per second or in your case the meters per second. Do a little more research before commenting again.
1776PatriotTeen 3 months ago
@1776PatriotTeen But you still can make it stronger.
Yfr28 3 months ago
@Yfr28 It's not like you can see externally. All you do is just lower the power below Germany's laws and keep it Semi-Automatic.
1776PatriotTeen 3 months ago
@1776PatriotTeen In fact all modifications that make the gun stronger are illegal or require a gunsmith to do it and a new permission and all that stuff, new F in Pentagon. A lot of people still do it and the police basicly doesnt care as long as its below 7.5J and Semi auto but when they take it and test it youre screwed. Sry for you that you research on wikipedia.
HDROSpieler123 3 months ago
@HDROSpieler123 Or you can just install yourself. It's not that hard. Your government isn't going to know EVERY single airsoft part! Oh and by the way, simple solution. KEEP IT ALWAYS BELOW THE LIMIT! They won't know if you don't tell them. They will not look completely thoroughly into the gun. That would violate even your countries privacy laws. And finally, they would need the tool supplied to even make the adjustment. Just ship the tool separately. That's what my friend did to his WE M14...
1776PatriotTeen 3 months ago
@1776PatriotTeen I know that you can do it yourself but to stay legal you have to go to a gunsmith. But the German law is not very specific about airsoft guns so you can do a lot to your guns without having too many issues with the police. I mean there are a lot of player who just use a body with a F in Pentagon on it and build a complete new gun of course illegal, and use it without problems. But its just safer. Not that i care too much about it. Btw the WE M14 is very nice, have it myself.
HDROSpieler123 3 months ago
@1776PatriotTeen Yes, but the problem is that the replica may be considered as powerful as the NPAS can go.
Yfr28 3 months ago