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Rocket Valve Spring


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#1 BoobieM4H

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Posted 30 May 2012 - 08:55 AM

I swapped out the stock rocket valve spring with a stiffer spring. Spring is made by proud and I ordered it from tmc and its made for ksc m4. It did raise the fps slightly.  I did swap the stock bucking with a ra-tech bucking and it did bring my fps over 400 and made it more consistant.
https://www.youtube....be_gdata_player

#2 Raptor72

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Posted 30 May 2012 - 09:10 AM

Im gonna wait until I have 5000 rounds through it before I start really moding my gun.  That said, I am surprised how far the hop up nubs protrude into the barrel even with the hop up off.  My big question is will the RA tech nozzle/npas fit into the kwa bolt?

#3 BoobieM4H

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Posted 30 May 2012 - 11:40 AM

That is my next mod with this gun..hopefully it works..but I will be using the kwa shell of nozzle with the ratech npas because of the metal reinforments with kwa nozzle. Ill post up a vid when I do

#4 Raptor72

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Posted 30 May 2012 - 12:00 PM

GREAT IDEA!.  So simple.  So are you just going to order the nozzle with the npas installed, I think is like $90, and then just swap out the innards?

**EDIT** Never mind, just saw that you can purchase the valve separately.

Edited by Raptor72, 30 May 2012 - 12:05 PM.


#5 BoobieM4H

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Posted 30 May 2012 - 04:17 PM

Yup..exactly what I'm gonna do..ratechs video on the naps seems legit.

#6 niko_gpsy

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Posted 01 June 2012 - 04:26 AM

I will test this when I receive my LM4 this week but that FPS readings are kind of all over the place.  What were the readings before the spring swap?  Was the FPS reading wider in range in stock form?

#7 apacifico3

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Posted 01 June 2012 - 05:14 AM

Nice find! Look forward to seeing how my LM4 does when I finally get one. Then we'll see if it needs anything.

#8 BoobieM4H

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Posted 03 June 2012 - 12:36 PM

View Postniko_gpsy, on 01 June 2012 - 04:26 AM, said:

I will test this when I receive my LM4 this week but that FPS readings are kind of all over the place.  What were the readings before the spring swap?  Was the FPS reading wider in range in stock form?
my fps readings were in the range of 320-350ish..I play a lot of outdoor milsim and this wasn't gonna make the cut lol..I also replaced the nozzle oring for a slightly larger one and it makes good compression when testing in the bolt . The stock oring would make no compression when tested by holding fingers over nozzle tip and inlet for gas on bottom of nozzle and compressing nozzle into bolt.

#9 blazeflow

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Posted 14 June 2012 - 11:07 AM

View PostRaptor72, on 30 May 2012 - 12:00 PM, said:

GREAT IDEA!.  So simple.  So are you just going to order the nozzle with the npas installed, I think is like $90, and then just swap out the innards?

**EDIT** Never mind, just saw that you can purchase the valve separately.

i looked on WGC shop and i didnt see the npas by itself for the ksc m4. which npas did you see ?

#10 Tech-D

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Posted 14 June 2012 - 11:25 AM

Blazeflow:  I'm actually looking to do the same thing he suggested the KJW N.P.A.S. not the KSC.

#11 Raptor72

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Posted 14 June 2012 - 01:15 PM

The KSC NPAS only comes with the entire BCG or in the KSC nozzle.  It does not come separate.  I plan on purchasing the nozzle and take the NPAS out to put in my KWA nozzle.

#12 NSH808

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Posted 19 June 2012 - 04:55 PM

Hi
Just got a rocket valve for a m9 installed it today and the fps is 460


#13 Outlaw1995

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Posted 19 June 2012 - 06:51 PM

View PostNSH808, on 19 June 2012 - 04:55 PM, said:

Hi
Just got a rocket valve for a m9 installed it today and the fps is 460
Where exactly did you get your valve from?!

Welcome to the forums by the way...

#14 NSH808

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Posted 19 June 2012 - 09:30 PM

I picked it up from one of the shops here

#15 NSH808

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Posted 19 June 2012 - 09:32 PM

View PostNSH808, on 19 June 2012 - 09:30 PM, said:

I picked it up from one of the shops here
Q
Power edge in Hawaii. He said it was a rocket valve for m9.
Has no package it's aluminum and looks like a nurf football

#16 niko_gpsy

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Posted 20 June 2012 - 04:15 AM

How consistent is the FPS readings?  Is there a large difference between each shot?

#17 BoobieM4H

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Posted 20 June 2012 - 05:53 AM

What weight bb are you using?

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#18 NSH808

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Posted 20 June 2012 - 07:46 AM

With .25 it's shooting 460-475fps.
Tried using .2 but I'm having a lot of problem of bbs shattering.
Never happen with the .25 yet

#19 niko_gpsy

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Posted 20 June 2012 - 08:18 AM

How is your accuracy and range with higher fps? Want to get an idea if the current hop up system can handle higher fps.

#20 Outlaw1995

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Posted 20 June 2012 - 08:42 AM

Is there a link so I can check out this rocket valve?




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