25 marauder and SS valve

This topic has 8 replies, 3 voices, and was last updated 1 year, 3 months ago by karmical.

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January 6, 2018 at 9:18 pm #23108

airgunmann
Participant

Has any one used the new ss valve from Travis unregulated with the 33.94 mk2 yet I got the valve on my bench . I’m currently tunning my talondor 12 in barrel and wanted to finish it before I give into my mrod again . Once I do I want to find out what the valve will do should be a power house

January 9, 2018 at 3:11 am #273763

bigtinboat
Participant

Is that the valve that’s like those old balanced paintball valves? With orings on the piston inside the valve? If it is I’d sell it instead of installing it. Otherwise you are just asking for problems. If you do install it just keep checking your gun with a chrony. You’ll see. Un-lubed o-rings don’t last forever. Even while they are new you will see problems. After they sit for a while don’t expect your 1st shot to be anywhere near subsequent shots.

January 12, 2018 at 12:59 am #273800

airgunmann
Participant

This isn’t the same old balanced paintball valve . This valve has been put to the test with several people running the prototype . It’s also really efficient and uses poppet design of the war valve I believe

January 12, 2018 at 1:40 am #273802

bigtinboat
Participant

quote Airgunmann:

This isn’t the same old balanced paintball valve . This valve has been put to the test with several people running the prototype . It’s also really efficient and uses poppet design of the war valve I believe

OK, don’t take my word for it. Install it into the gun. See if you can get a decent shot string out of it. Once you think you have it let the gun sit for a few hours and the shoot it over the chrony. I’d be willing to bet it shoots quite a bit lower then what you have it tuned for. This is due to the internal o-ring in the valve. How are you going to lubricate them?

Also don’t take my word for it being old technology. Do a google search on balanced paintball valves. It’s old news being resurrected as “new”.

January 12, 2018 at 11:03 pm #273815

bigtinboat
Participant

Any chance to try that valve?

The below info was sent to me on a guy who installed the valve.

Name: SS With Striker 5 turns from flush. Hammer spring 3.75 turns in.
3 oring buffer orings
3 spring loops cut off factory spring (I do not suggest this as it is a bit too much)
Notes: 3100-2600 psi
Shots: 8
Average: 888 FPS
SD: 8 FPS
Min: 876 FPS
Max: 902 FPS
Spread: 26 FPS
Power Factor Average: 38
Power Factor Low: 37
Power Factor High: 38
Barometric Pressure: 30
Temperature: 71
Weight: 43 grains

Index Velocity Ft/Lbs
1 876 73
2 893 76
3 902 77
4 893 76
5 891 75
6 888 75
7 883 74
8 879 73

and here is a tune one of the “amateur” valve modifiers came up with running his own home modified valve and spring that he makes.

My valve and hammer spring – everything else stock.

43 Eujins – start pressure 3000psi and end pressure 2350psi.
FPS
914
919
914
915
906
896
896
895
Average FPS – 906 and nearly 79fpe for a 2.6% ES. Heck, it was the fist try. I think I can do better.

Note that the SS valve tune is lower in power, higher in ES, and was done using an OVER filled tube.

SS valve might not be all it’s “advertised” to be.

January 13, 2018 at 8:55 pm #273826

airgunmann
Participant

Yeah alot of people are using a regulator and a light hammer with them . I thought I would try it any way

January 31, 2018 at 4:09 am #274110

bigtinboat
Participant

So did you ever get your SS valve installed?

February 10, 2018 at 11:56 pm #274259

airgunmann
Participant

I got side tracked with a fire arm project .so it is on my work bench along with 2 revisions that they sent me to change out . Apparently the prototype s we’re doing better than the production pieces and they sent the parts to change out to try to get the better efficiency from what I understand

October 6, 2019 at 4:49 am #529130

karmical
Participant

I’ve had my 1st gen SS valve now for over year.

Its tuned to 26 shots at 54fpe, I’ve haven’t had the striction issues since the valve broke in.

I can let it sit for months, and the first shot isn’t 50-125 fps low like claimed.

It did do it a couple of times, but I just kept using the gun and its settled down and works just fine
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