Prometheus airseal nozzles rock!

LUTNIT · January 16th, 2008, 14:57

I have a stock TM M14 OD. Installed a Prometheus Ms110 spring and Prometheus airseal nozzle, thats it. In my experience a Prom Ms110 spring in a TM G36c delivers 355fps, in a TM M4 delivers 365fps, in a full length CA36 it delivers 390fps (with tightbore, rest where stock barrels, all with hopup off.) My M14 is now shooting 420fps with the hopup off, 406fps with the hopup properly set for BB Bastard 0.25's. Just a heads up that Prometheus airseal nozzles are damn good, brought me up at least 20-30fps for that one piece alone. Now I'm afraid to get a tightbore for my M14 in case it brings me up another 5-10fps.

Crunchmeister · January 16th, 2008, 15:13

That's good to hear. I was on Jugglez's site making up my next list of things to buy and was considering picking up 2 of these for my AEGs.

CDN_Stalker · January 16th, 2008, 15:18

Normal stock nozzles have no inner O-rings, where airseal nozzles (whatever the make) do and provide a much better seal. I've wrapped the cylinder head nozzle in teflon tape before (just this past weekend on Apoc's SAW) then put the graphite lube on it, then the stock nozzle, and got a very noticable increase in compression (not that I chronied it, was sorting out his leaking problems which he "fixed" by putting half a tube of lithium grease into the cylinder, artificially getting the seal after he plugged his piston head ports with too much grease).

I think I'll buy some airleak nozzles to keep in stock on my next order.

Omi-san · January 16th, 2008, 17:42

I have the guarder air seal nozzle. That might explain why I was getting way above 400fps with a Prometheus MS110 in my G36k.

CDN_Stalker · January 16th, 2008, 18:53

And................ this thread is good info to pass onto V2 mechbox users who want to increase their fps but have their shell last as long as possible. I know it's been mentioned in other threads, sealing up airleaks to increase velocity, but this thread has numbers and why, so I think it should receive a sticky of some type.

Crunchmeister · January 16th, 2008, 19:16

Just how much of a velocity increase can one get using one of these nozzles compared to a stock TM one? I installed new gears and a Prometheus MS110SP spring in my C8 (TM M4A1) and am now in the 350 - 370 FPS range according to the chart on the pop can 'poor man's chrono'. I also have a tightbore barrel coming for the gun shortly. Before I put in the order, I want to make sure the tightbore / nozzle upgrade isn't going to throw me above the 400 FPS mark.

dontask · January 16th, 2008, 19:38

Quote:

Originally Posted by CDN_Stalker

Normal stock nozzles have no inner O-rings

funny, my TM aug's stock nozzle has a inner o-ring and I bought it new/stock while the systema "airseal" nozzle I bought off of a guy on asc had no o-ring whatsoever... I suspected that I got ripped so I left the nozzle stock

Syn · January 16th, 2008, 20:45

Quote:

Originally Posted by dontask

funny, my TM aug's stock nozzle has a inner o-ring and I bought it new/stock while the systema "airseal" nozzle I bought off of a guy on asc had no o-ring whatsoever... I suspected that I got ripped so I left the nozzle stock

I think I have the same problem from upgrade parts that came in a kit. I put the stock nozzle back in for now. Where exactly does the o ring go? inside or behind the nozzle? I have teflon plumbing tape or can I hit a Home Depot for an o ring.

CDN_Stalker · January 16th, 2008, 21:21

Inside the nozzle in a recessed groove. Go with teflon tape and see if you can get an increase. Just remember to lube it.

Syn · January 16th, 2008, 21:26

Quote:

Originally Posted by CDN_Stalker

Inside the nozzle in a recessed groove. Go with teflon tape and see if you can get an increase. Just remember to lube it.

silicone 100% thick kind or the oil drops? I have some thick from Moen. lol

thanks.

CDN_Stalker · January 16th, 2008, 21:50

Really thick silly oil should work ok, I used anhydrous graphite lube since i use it 90% of the time for grease use. Just wrap a reasonable amount around the nozzle, then place the stock nozzle on it with grease and move it back and forth to make sure it compresses enough to allow it easy movement, then put back together. Get's kinda messy on the nozzle, as far as looks go, and I'm not sure how long it'd last, I just came across this trick last weekend (a result of wrapping my hop up rubber on my CA M24's inner barrel before installation, found almost a 20fps increase in fps. So I tried the teflon tape on the nozzle and found the increased compression by working the piston manually was enough to warrant my mentioning it.)

Crunchmeister · January 16th, 2008, 22:22

Quote:

Originally Posted by CDN_Stalker

found almost a 20fps increase in fps.

Really? The increase was that significant from a better nozzle seal?

Hmmm... I may reconsider adding an airseal nozzle to my M15 rifle then. Like I said, my C8 with the torque-up gears and MS110SP spring is already in the 350-370 range. I'm not sure how much of an increase the tightbore barrel will give me, but it will give me a boost. If an airseal nozzle can throw in another 20 FPS, that's going to put me dangerously close to 400 FPS already.

I've got a new Systems piston, and Systema silent piston / cylinder head set for my M15, as well as another MS110SP spring on the way. With the longer barrel, I estimate that will put me in the 370-380 FPS range. Adding a tightbore and an airseal nozzle would probably put me over 400.

CDN_Stalker · January 16th, 2008, 22:28

Well not quite, my ~20fps increase came from wrapping the hop up rubber in my M24 with teflon tape (mid 490fps to mid 520s after............ ok, a bit over 20fps increase), but I did notice a good increase in pressure on the bench with the CA M249 SAW with ported pistonhead by wrapping the nozzle of the cylinder head with the tape and manually pushing the piston forward with my finger on the nozzle, even when sitting forward by the tappet plate in position to fire). I just have more work to do on the SAW until I'm at the point of actually chronying.

dontask · January 17th, 2008, 00:22

how does wrapping the hop up rubber work?
I've already wrapped between the barrel and the hop up rubber if that's what you mean. However I seem to be getting a ridiculous amount of hop even with the hop up dialed completely to zero
any ideas?

Crunchmeister · January 17th, 2008, 00:35

I just reread this entire thread and have the answer I was was looking for in my original question. MS110 is what I'll be installing in my M15. As LUTNIT said, it should produce about 390 in a full length G36, so I should expect about that with my M15 once I get it upgraded. I'll pass on the nozzle and tightbore for this gun because it will most likely bring it above 400 fps.

However, I should be safe to install the tightbore and airseal nozzle on my C8 and keep it below 400.

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January 16th, 2008, 14:57	#1
LUTNIT Trader rating Join Date: Dec 2005 Location: Ottawa	Prometheus airseal nozzles rock! I have a stock TM M14 OD. Installed a Prometheus Ms110 spring and Prometheus airseal nozzle, thats it. In my experience a Prom Ms110 spring in a TM G36c delivers 355fps, in a TM M4 delivers 365fps, in a full length CA36 it delivers 390fps (with tightbore, rest where stock barrels, all with hopup off.) My M14 is now shooting 420fps with the hopup off, 406fps with the hopup properly set for BB Bastard 0.25's. Just a heads up that Prometheus airseal nozzles are damn good, brought me up at least 20-30fps for that one piece alone. Now I'm afraid to get a tightbore for my M14 in case it brings me up another 5-10fps.

January 16th, 2008, 15:13	#2
Crunchmeister Trader rating Join Date: Nov 2007 Location: In your bedroom going though your underwear drawer	That's good to hear. I was on Jugglez's site making up my next list of things to buy and was considering picking up 2 of these for my AEGs. __________________

January 16th, 2008, 15:18	#3
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Normal stock nozzles have no inner O-rings, where airseal nozzles (whatever the make) do and provide a much better seal. I've wrapped the cylinder head nozzle in teflon tape before (just this past weekend on Apoc's SAW) then put the graphite lube on it, then the stock nozzle, and got a very noticable increase in compression (not that I chronied it, was sorting out his leaking problems which he "fixed" by putting half a tube of lithium grease into the cylinder, artificially getting the seal after he plugged his piston head ports with too much grease). I think I'll buy some airleak nozzles to keep in stock on my next order. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

January 16th, 2008, 17:42	#4
Omi-san Trader rating Join Date: May 2007 Location: Montréal	I have the guarder air seal nozzle. That might explain why I was getting way above 400fps with a Prometheus MS110 in my G36k.

January 16th, 2008, 18:53	#5
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	And................ this thread is good info to pass onto V2 mechbox users who want to increase their fps but have their shell last as long as possible. I know it's been mentioned in other threads, sealing up airleaks to increase velocity, but this thread has numbers and why, so I think it should receive a sticky of some type. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

January 16th, 2008, 19:16	#6
Crunchmeister Trader rating Join Date: Nov 2007 Location: In your bedroom going though your underwear drawer	Just how much of a velocity increase can one get using one of these nozzles compared to a stock TM one? I installed new gears and a Prometheus MS110SP spring in my C8 (TM M4A1) and am now in the 350 - 370 FPS range according to the chart on the pop can 'poor man's chrono'. I also have a tightbore barrel coming for the gun shortly. Before I put in the order, I want to make sure the tightbore / nozzle upgrade isn't going to throw me above the 400 FPS mark. __________________

January 16th, 2008, 21:21	#9
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Inside the nozzle in a recessed groove. Go with teflon tape and see if you can get an increase. Just remember to lube it. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

January 16th, 2008, 21:50	#11
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Really thick silly oil should work ok, I used anhydrous graphite lube since i use it 90% of the time for grease use. Just wrap a reasonable amount around the nozzle, then place the stock nozzle on it with grease and move it back and forth to make sure it compresses enough to allow it easy movement, then put back together. Get's kinda messy on the nozzle, as far as looks go, and I'm not sure how long it'd last, I just came across this trick last weekend (a result of wrapping my hop up rubber on my CA M24's inner barrel before installation, found almost a 20fps increase in fps. So I tried the teflon tape on the nozzle and found the increased compression by working the piston manually was enough to warrant my mentioning it.) __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

January 16th, 2008, 22:28	#13
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Well not quite, my ~20fps increase came from wrapping the hop up rubber in my M24 with teflon tape (mid 490fps to mid 520s after............ ok, a bit over 20fps increase), but I did notice a good increase in pressure on the bench with the CA M249 SAW with ported pistonhead by wrapping the nozzle of the cylinder head with the tape and manually pushing the piston forward with my finger on the nozzle, even when sitting forward by the tappet plate in position to fire). I just have more work to do on the SAW until I'm at the point of actually chronying. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871 Last edited by CDN_Stalker; January 16th, 2008 at 22:30..

January 17th, 2008, 00:22	#14
dontask Trader rating Join Date: Jan 2006 Location: Vancouver	how does wrapping the hop up rubber work? I've already wrapped between the barrel and the hop up rubber if that's what you mean. However I seem to be getting a ridiculous amount of hop even with the hop up dialed completely to zero any ideas? __________________ Present TM AUG A2 [Standard/Commando barrel], KSC U.S. M9 HW, KSC USP Compact

January 17th, 2008, 00:35	#15
Crunchmeister Trader rating Join Date: Nov 2007 Location: In your bedroom going though your underwear drawer	I just reread this entire thread and have the answer I was was looking for in my original question. MS110 is what I'll be installing in my M15. As LUTNIT said, it should produce about 390 in a full length G36, so I should expect about that with my M15 once I get it upgraded. I'll pass on the nozzle and tightbore for this gun because it will most likely bring it above 400 fps. However, I should be safe to install the tightbore and airseal nozzle on my C8 and keep it below 400. __________________

Prometheus airseal nozzles rock!

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