Question for anyone interested in the E-TaCREG
Guys,
Working out the final details on the E-TaCREG. (This is the E-TaC for the HPA bottle)
What velocity do you guys want out of a 24-inch barrel?
Thanks,
Jim
All Replies
I would agree with Waltor, if, IF, the shot count is up there…..????
920 with 18 grains is just fine Jim.
Guys,
Hi-flow valve installed. Got some 18gr JSBs (thanks Dave) and filled ‘er up.
Damn I’m having a hard time getting over 920 with the 18gr.
I don’t know what else to do. I’ve not been able to get above 920 with the 18gr. I get 952 with the 16gr Gamos, but the JSBs are proving a trick.
I modified the chamber for nearly double the volume and was not able to increase the fps. I’m kind of at a loss. I’m thinking a major redesign of the valve may be in order; I’m just not sure. I need more flow quicker. If I simply lighten the pre-load I’m afraid I’m going to loose a lot of air before it closes, decreasing shot count.
I didn’t take a whole lot of shots at 920 so don’t know how many will be available, but the 10 I did shoot were within 5fps so I know the reg is working nicely.
Any thoughts would be appreciated.
Jim
Hey Dave,
Thanks for the reply.
The delrin seal is definitely not interchangeable, I’m wondering about the brass spring retainer….what size hole does it have in it?
Regards,
Jim
From the pictures of the Old hi flow vs. the new hi flow. The hole in the delrin seal that the stem is pushed into, is bigger on the old one. They are not compatible from what I can see.
Dave
Question for you valve gurus:
Does the new hi-flow valve stem take the same valve spring retainer as the old hi-flow or is it different?
If different, how?
Never thought to order it or the delrin seal…such a dumbass am I.
THanks,
Jim
Sam,
Came in yesterday.
Have some other things weighing on my life right now that need attention.
Regards,
Jim
Did you get the valve yet?
The Hi-Flo valve is on order.
I’ve done some tinkering to get more flow by changing the back of the valve since it won’t have to go into the bottle anymore, only into my E-TaC. I made my own valve, actually. Makes for a much larger, longer chamber and much shorter distance for the air to travel from the delrin seal to the pellet.
Also, with the larger diameter, the diameter around the delrin seal will be much larger so the air won’t have to climb over the delrin seal to get to the ports. It will come in from the side. Think of it more as an engine poppet valve.
The location of the valve spring may change as well. I think I can put a flange on the valve tube and pre-load it that way. No more valve retainer and the loss of flow that comes with it and the spring in the way.
Regards,
Jim
I know what Jim is doing but he should know you don’t leave a bunch of kids at a candy shop forum and expect there to be any candy here for him when he gets back from finding 😆 😉 🙄 a Candy valve oh sorry Condor valve
Surrrrrre as shootin’ I’ve got the crappy old one.
Time to call Airforce.
Thanks for the link Sam. And to all the others for the info.
Jim
Jim no need to thank me. It’s like watching a kick ass movie and it ended leaving you saying “Wow! I can’t wait for part 2!” Now, I’m wishing I had an extra H.F. valve.
Holy Swizzle sticks Batman…I need a REAL high-flow valve.
Surrrrrre as shootin’ I’ve got the crappy old one.
Time to call Airforce.
Thanks for the link Sam. And to all the others for the info.
Jim
I need some clarification on this matter. How does the valve affect things on a “regulated” valve? Unless a talon valve is more restrictive than the reg.???
Sam,
The reg does not typically flow any ‘pellet-propelling’ air during the shot. The valve empties the regulated air and the regulator tries to fill it back up. The regulator has nothing to do with the hammer hitting the tophat and letting air into the barrel. The reg only fills the chamber back up to 2000psi to let it happen again.
HTH,
Jim
This is why I was saying about a blod(hiflow valve) putting out 21gr at 1000fps at 2000psi.
So it would seem the valve is the restricting factor…I presumed you were using a hi flow valve 😕
If you are, it must be the old crap ‘hiflow’ valve….
Jim
The inside of the talon valve stem is just less than 1/8″” When modded it is drilled out to 1/8″” . The condor valve looks huge when compaired side by side but it is about 3/16″” .
For comparison my moded talon valve produces about 1000 fps at 2800 psi but about 890 when down to 2000 psi . The condor valve still produces well over 1000 fps at 2000 psi . All with 18 g JSBs.
This is why I changed to the talon valve , just too much velocity with the condor valve and 18g pellets and 24″” barrel . However with a regulated system of 1800 to 20000 psi the larger valve might be perfect .
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I’m not sure what to suggest, I guess the extra volume in my pre chamber helped me get the extra few FPS
one thing though, did you get the condor hammer weight to aid in opening the valve.
Using my same pre chamber and an ultra flow valve made by me, I’m able to shoot 31 grain .25 kodiaks at 950 fps on only 2000 psi. I was also able to push 42 grain Sam yangs at 830 fps for 65 FPE. This is with a 24″ barrel
Dave