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Dangerwerx Valve Results...


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#1 akiraspeedstar

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Posted 08 September 2012 - 08:09 AM

So I installed he Dangerwerx rocket valve today made for the MP7 since the RA-Tech barrel raised my fps on my 320fps "CQB Bolt" to 370fps (I had a few 400 shots today). After installing the Dangerwerx valve my FPS dropped to a very consistant 290-295fps with propane and .20g which is a 80+ fps reduction.

I stretched out my cut rocket valve spring and it now shoots 320fps. Guess I'll order another uncut rocket valve spring on Monday to hopefully get it closer to 350fps.

#2 dos_Santos

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Posted 08 September 2012 - 08:41 AM

With the stock barrel and installing the DangerWerx valve, I am shooting at about 310 fps (.20's and green gas) give or take.  I definitely want to get another 30-40 fps, so I was going to remove surface area from the stem of the valve with a dremmel.

#3 BoobieM4H

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Posted 09 September 2012 - 07:49 PM

http://www.airsoftgl...oducts_id=15834

wonder what this wil do???

#4 akiraspeedstar

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Posted 09 September 2012 - 08:30 PM

Interesting, never seen that before

#5 BoobieM4H

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Posted 09 September 2012 - 10:56 PM

Looks more like a TM nozzle valve. Illl prolly order it sometime this week

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#6 dos_Santos

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Posted 10 September 2012 - 11:26 AM

I wonder if you'll need a need spring with the OD of the "stem" being a bit larger.  Also looks like an o-ring is installed. Not familiar with the internals of the pistols mention, although I have a KSC USP Tactical I picked up while I was in Taipei last year; couldnt pass it up with all the official trades!!

#7 BoobieM4H

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Posted 10 September 2012 - 10:00 PM

Gonna have to see when i get it. I think the original spring will work

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#8 rigid650

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Posted 09 November 2012 - 05:02 PM

My Magpul PTS LM4 was shooting 395fps w/.20's stock, dangerwerx valve took it down to 295, i had to shave the dangerwerx valve on the backside to just past where the bevel was to get it to 330-335

#9 Twombles

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Posted 10 November 2012 - 04:09 PM

What part exactly did you shave back?  The top of the head or the bottom (shaft end) of the valve "head"?

#10 akiraspeedstar

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Posted 10 November 2012 - 05:46 PM

Bottom of the head, the shaft side wouldn't increase the FPS much at all. I had to do the same thing as well.

#11 rigid650

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Posted 11 November 2012 - 11:38 AM

View PostTwombles, on 10 November 2012 - 04:09 PM, said:

What part exactly did you shave back?  The top of the head or the bottom (shaft end) of the valve "head"?

this side
Posted Image

#12 Twombles

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Posted 11 November 2012 - 12:50 PM

Thanks.

#13 akiraspeedstar

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Posted 11 November 2012 - 01:01 PM

Also any FYI, Dangerwerx is working on a LM4 rocket valve

#14 Helix262

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Posted 09 February 2013 - 11:20 PM

Not to Necro an old post but just as an update on the Dangerwerx valve, I've installed all the ones for our local airsoft store and on the 7 i've installed they, on average, shoot about 300-310 FPS on the LM4c's with a .20g in a stock rifle, I am the only one with a LM4 standard length, I average 290 FPS with a .20. I'll probably be doing some sanding to get my FPS a little higher.

#15 WTF?Shane

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Posted 10 February 2013 - 01:02 AM

I ordered one the other night and looking to shave it down some when I get it in hand. Helix, if you can, measure the total length of the valve and the velocity. I'll try to do the same.

#16 optimuskmg

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Posted 10 February 2013 - 06:27 AM

View Postakiraspeedstar, on 08 September 2012 - 08:09 AM, said:

So I installed he Dangerwerx rocket valve today made for the MP7 since the RA-Tech barrel raised my fps on my 320fps "CQB Bolt" to 370fps (I had a few 400 shots today). After installing the Dangerwerx valve my FPS dropped to a very consistant 290-295fps with propane and .20g which is a 80+ fps reduction.

I stretched out my cut rocket valve spring and it now shoots 320fps. Guess I'll order another uncut rocket valve spring on Monday to hopefully get it closer to 350fps.

View Postakiraspeedstar, on 08 September 2012 - 08:09 AM, said:

So I installed he Dangerwerx rocket valve today made for the MP7 since the RA-Tech barrel raised my fps on my 320fps "CQB Bolt" to 370fps (I had a few 400 shots today). After installing the Dangerwerx valve my FPS dropped to a very consistant 290-295fps with propane and .20g which is a 80+ fps reduction.

I stretched out my cut rocket valve spring and it now shoots 320fps. Guess I'll order another uncut rocket valve spring on Monday to hopefully get it closer to 350fps.

can you put a video of that on your youtube? specifically stretching the spring, would be much appriciated

#17 akiraspeedstar

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Posted 10 February 2013 - 07:27 AM

Shaving the rear of the valve will get it to about 335fps and it doesn't seem shaving it more will do anything at this point.

#18 akiraspeedstar

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Posted 12 February 2013 - 07:32 AM

I figured it'd possibly lower the FPS and it did. I opened the hole on the base of the valve and crowned it. It lowered the FPS from about 335fps down to 305fps. Im assuming since this slightly lightened the valve and also allowed the gas to enter the rear port easier.




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