Modified Etac-Reg
Well because my new lathe is a little late on showing up I figured I would make another etac-reg with a collar for more volume. Can’t make what I will make until the new lathe shows up in the next couple of weeks. I made this one about .187 wider to see how much difference it makes. All I know is that my new .22 condor I built shoots kodiaks in the 970’s with a standard etac-reg and 2500 psi reg. With modified etac-reg and 2000 psi reg it shoots in the mid 960’s to low 970’s. I have the 2000 on a 53 ci tank and the 2500 on a 62 ci tank. I get more shots with the 2000 reg on the 53ci tank. I will pressure test this one to 4500 psi in a bucket of water after I weld it together tomorrow. It is .180 on the top and the sides are .140 thick. The most it will see is 2500 psi and I don’t think I will need more than my 2300 psi to get the .25 kodiaks to 950 fps or so. Going to go down to 1800 psi for the .22 I think.
All Replies
Yeah thats not to bad they will hold up with out worry. just a thought u could.go and get them heat treated and them they would really be no worrys because the heat stress would be taken out
Thanks. I had 2 made from 1018. Standard ones are made out of 1144 I think. Can’t weld them. It only has 1800 psi and will never see more than 2500 psi.
Dope tig welds and maching. I dont think there should ever be a proble with a weld breakimg if done right because the weld should always be stronger them the metal. As long as your good at welding witch looks like u. Are. And that weld is finished nice with no crater on the end and no under cut. It dose look a little concaved but might be the pic thou . And I dont see any over heating spot and the penitration look good but thats hard to tell . Sorry I just love to weld and figuted id put my 3cents in. looks super awsome so 3 thums up from me.
what kinda metal are the etacs made from?
Dyotat100 – you do some very fine fabrication work – If you ever quit your day job you can always make accessories.
I can understand the liability for welds and threads and pressures and who knows what all. Wonder how the maker of the E-TaC deals with that. No pressure vessel certificates, I don’t think.
Maybe I’ll get that mini-lathe yet, just for hobby sake.
😆
It’s welding, pretty big difference. 😉
And some nice welding at that. 😉 😉
Sorry my bad, I meant welding keep thinking of electronics …
No plan on making them for sale. I’m trying to get a hold of Jim to get 2 more Etac-Regs made out of 1018 so I can weld on them also. I would never sell one of the welded ones because of liability reasons. I will make my version but I don’t think anybody will want to pay $300.00 for what I’m going to make and send your gun so I can clock it to your gun. I don’t even know if it will be worth it for me at that price. I will start on one after I get my new lathe.
I also forgot I would have to machine off the back of your scope rail like mine to clear what I’m making.
Soooooooooooo…. is that a way of saying you are close to going into production ?
Are you definitely favoring the VE-TaC over the Z-TaC ?
😆
It’s welding, pretty big difference. 😉
And some nice welding at that. 😉 😉
No way to make this one piece. No way to cut the grove in the collar. Has to be 2 piece or I’m hoping my idea works that I’m going to do on my version of the Etac-Reg.
I didnt know that soldering could hold such high pressure !!
Alright – now that testing seems complete and you have hit your numbers, what are you going to do ?
1. Buy E-TaCs and add a VE (Volume Expander).
2. Build the VE-TaC from scratch.
What do you think the price would be for either ?
By the way, if you pulled the Valve and Reg out and filled with water, how many cc of volume did you end up with (remember to get the bubbles out) ?
Put the tank on the .22 and first shot was 1017 fps with 1800 reg. It then leveled off in the 995, 997 area. Hard to shoot the .22 because I have to build a shroud. Way to loud in my garage. Waiting for someone to come knocking on the door. Also made some bipod mounts that bolt on to the frame. Now I need to get some smaller regs for the .22.
I think I can get 10 shots with less than 30fps difference with my Blod valve and 53ci tank. You will need a larger tank for sure. The other way would be to get a 4500 to 3000 psi reg. Don’t know how large the chamber would have to be. I have a 2500 psi reg. Maybe on thursday I will stick it in the big collared Etac-Reg and see what it does with 43 g eun jins. I’m thinking 1400 psi for .22 cal 18.1 g JSB’s and 1600 psi for .22 kodiak’s.
sweet… Can you think of any other improvements ? What about for the guys that want 10 good shots at near max pressure for 43.2 gr or 7 ring slugs ?
- You must be logged in to reply to this topic.
Yeah thats not to bad they will hold up with out worry. just a thought u could.go and get them heat treated and them they would really be no worrys because the heat stress would be taken out