Evolve valve cap is not adjusting anything

[thatguy!]

I'm trying to set my Evolve Lite up per Evolve/Triggas instructions, but one thing is getting in my way. The valve cap adjustment screw, which is supposed to adjust fps without adjusting input pressure, is not doing anyintng. All the way in, all the way out, no change in velocity.

Tank output 400
CP output 225
LPR at 50 or so
Dwell 8

With those sttings I am shooting 325 consistently, valve screw position does not make ANY difference. Lower LPR does nothing except cause shootdown. Lowering the input will lower the FPS, but I have to end up lowering it to the 150 range to get it to chrono at 275. 150 is way too low for an Evolved A4 Fly, I think.

So... at this point I'm really likin' the stock valving. Any thoughts?

[Trigga Nometry]

That is weird. What it is supposed to do is increase or decrease the spring tension meaning that the valve should close faster or slower (depending on what tension you have it set to) and that will inpact your velocity.

If you screw it all the way in then the valve should not open at all. Does that happen? Does the spring still look "normal"?

[RangerJoe]

mabe grease the o-ring at the end of the valve?

[thatguy!]

When the screw is as far in as it'll go (it never bottoms out, it just is stopped by the spring and wont go any more) it shoots the same as it does when it's all the way out.

However, upon looking at the spring I noticed the faces of the spring are a bit tilted. This makes sense because I spragged the spring after I got it back fom FMA, and I recall hoping that I wasn't going to bend it. When I put it on a flat surface the whole spring leans in one direction. Based on what my other various springs look like, I think this may be my problem or part of my problem. Where can I get a new one?

[Th3bLaCkNiGhT]

When the screw is as far in as it'll go (it never bottoms out, it just is stopped by the spring and wont go any more) it shoots the same as it does when it's all the way out.

However, upon looking at the spring I noticed the faces of the spring are a bit tilted. This makes sense because I spragged the spring after I got it back fom FMA, and I recall hoping that I wasn't going to bend it. When I put it on a flat surface the whole spring leans in one direction. Based on what my other various springs look like, I think this may be my problem or part of my problem. Where can I get a new one?
contact evolve if you want an exact one or even any MT center may have a few extras. im sure you could also find a spring at a hardware store or something similar.

[BoB]

Springs are already compressed when we install the kit. What are you using to test your pressures? You made the same post on FMA and we asked you to call us so we could compare settings from when the marker was set up to new settings so we could better determine what is going on.

[thatguy!]

I'm using the guage on my CP, and my LPR is being judged based on 1/5 a turn being 5 psi. The CP is part of why this got all messed up, because when I sent it to you it had the stock mini-reg on it. Before I switched regs I shot it and it was fine, but it was slow ROF-wise. So, I decided to switch to my CP and go from there. I adjusted it (CP) up until I was shooting 280 again, but it was still slow. I looked over Evolves instructions and took the valve cap off and examined the spring. Felt overly stiff, so I compressed it again. I put the spring back in and put everything else back together. I reset my LPR to 60 and decided I would lower it until my performance was where it needed to be.

Clearly, that did not work. I'm sure the valve cap worked when it was sent out. I just got too nosy and messed it up. From what I've seen, my pressures have no bearing on the performance of the adjustment aspect of the cap. That is why I believe I screwed it up physically, rather than my pressures being too far off.

[BoB]

The 1/5 turn stuff is very in-accurate. When you say slow, are you refering to rate of fire? If so, you can alter your board settings such as MROF, Trigger offset and hopper speed.

[thatguy!]

I know, I'm in the process of getting one of the LPR guages that someone on here sells.

Slow is referring to ROF. Nothing on the board or hopper was slowing me down, and it wasn't my fingers because I tested it with PSP ramp on my Tadao.

[BoB]

What about the intellifeed settings?

[thatguy!]

It shoots the same speed whether the Intelli is hooked up or not. But right now it's set at 3, right where you put it. :cheers:

[BoB]

PSP is 15bps. Try putting the board into semi unlimited and see how that works for you.

[thatguy!]

Uncapped PSP ramp is what it was in. Semi speed seems unaffected, because I can hit maybe 14. Max ramp was maxing out at maybe 16.

Mode 5
MROF 26 blinks
Loader Delay 1
CPF 1

[dilligaf]

That is weird. What it is supposed to do is increase or decrease the spring tension meaning that the valve should close faster or slower (depending on what tension you have it set to) and that will inpact your velocity.

If you screw it all the way in then the valve should not open at all. Does that happen? Does the spring still look "normal"?

Hey Trigg, when I try to use the Evolve Adjuster cap and valve I can't get the valve to seal. It leaks & when I use the stock valve, spring, etc. it seals fine. I even raised the minireg to 240 psi and it still doesn't seal, but when I use my Cobra valve, or even the stock set up, I can run my minireg at 150-160 and the valve seals fine. Any thoughts.

[Trigga Nometry]

Hey Trigg, when I try to use the Evolve Adjuster cap and valve I can't get the valve to seal. It leaks & when I use the stock valve, spring, etc. it seals fine. I even raised the minireg to 240 psi and it still doesn't seal, but when I use my Cobra valve, or even the stock set up, I can run my minireg at 150-160 and the valve seals fine. Any thoughts.Does it look like there may be significant wear or damage to the valve stem on the Evolve valve stem's cup seal (the black part that goes against the valve body to make the seal)? Or is the leak come from the cap of the Evolve?

[dilligaf]

Does it look like there may be significant wear or damage to the valve stem on the Evolve valve stem's cup seal (the black part that goes against the valve body to make the seal)? Or is the leak come from the cap of the Evolve?

They air comes out the breech opening of the Valve. If I fire a few times it'll come out the adjuster cap as well. As far as wear, the kit has never been used. Brand new. I compared the black washer to the stock one to see if there was a grove that is indented in the washer for a seal, but there isn't. I tried tightening the spring tension screw to ad as much tension as possible to "Seat" the valve shut, but no luck.

[Trigga Nometry]

They air comes out the breech opening of the Valve. If I fire a few times it'll come out the adjuster cap as well. As far as wear, the kit has never been used. Brand new. I compared the black washer to the stock one to see if there was a grove that is indented in the washer for a seal, but there isn't. I tried tightening the spring tension screw to ad as much tension as possible to "Seat" the valve shut, but no luck.Sounds defective to me.

I know that some people have had to jack the pressure way up and take some shots and then let it stay at that high pressure for a while to help the cup seal "take its seat" or break-in but it sounds like you may have already tried that.

Might be time to contact Evolve.

[dilligaf]

Sounds defective to me.

I know that some people have had to jack the pressure way up and take some shots and then let it stay at that high pressure for a while to help the cup seal "take its seat" or break-in but it sounds like you may have already tried that.

Might be time to contact Evolve.
thanks Trigg.

[thatguy!]

Hah, my evolve cup seal wont seal either. It adjusts, yes (thanks for the spring, bob) but it will not seal no matter what I do. All I get is a gurgling sound from the hole in the breech. I finally just said screw it, and I put my stock valving back in but with the evolve hammer sill in there. I got it working like a charm, no leaks, no fuss.

Probably could be better if I could get the evolve valving to work, but I am content with where it is now.

[thatguy!]

HA! I figured out why it wouldn't adjust. Either my main valve rod is too short, or my adjustment screw was too short. I think it was my adjustment screw, because the correct length of the rod is about 4.5 inches, correct?

What was happening was that the screw was running out of threads to turn on in the body. So, with the screw as far in as it would go, it was still possible to push it in further with an allen wrench. So, I made a new adjustment screw that is longer, and with it screwed in all the way till it wont turn anymore, there is no airflow through the valve. Success is sweet.

It doesn't leak anymore either, because I bought a new valve (the face on mine was all messed up, explains the leaking)

[BoB]

I am waiting to hear back from Evolve on why they went to a shorter adjustment screw. Only time will tell.