Author Topic: QB79 HPA build for GTA member (Read 58418 times))

Buldawg76 · « **Reply #140 on:** April 04, 2016, 04:52:23 AM »

Chris
Ok cool but it just pain me that I did not get on the forum to see the issue you had so I could direct you to the threaded inserts that would have solved the epoxy letting loose issue. but keep me updated on the newer stock and I will keep you updated as well.

On the disco end cap the threads for the RVA screw I believe are going to be 12-28 but not sure as its actually there in that end cap to degass the gun by threading a long screw into push the hammer open against valve pressure so it was not intended to be an RVA hole but works very nice for one.

Tomorrow will be a busy day so not sure if I will get any testing done or not but will see if I can since I am eager to see how it groups.

Mike

BigTinBoat · « **Reply #141 on:** April 04, 2016, 10:16:40 AM »

Quote from: buldawg76 on April 04, 2016, 04:52:23 AM

Chris
Ok cool but it just pain me that I did not get on the forum to see the issue you had so I could direct you to the threaded inserts that would have solved the epoxy letting loose issue. but keep me updated on the newer stock and I will keep you updated as well.

On the disco end cap the threads for the RVA screw I believe are going to be 12-28 but not sure as its actually there in that end cap to degass the gun by threading a long screw into push the hammer open against valve pressure so it was not intended to be an RVA hole but works very nice for one.

Tomorrow will be a busy day so not sure if I will get any testing done or not but will see if I can since I am eager to see how it groups.

Mike

Disco end cap is 10-32

UCChris · « **Reply #142 on:** April 04, 2016, 11:04:16 AM »

Correct, the center threading is 10-32 and the two retaining holes are 8-32.

UCChris · « **Reply #143 on:** April 04, 2016, 12:08:34 PM »

AmBraCol · « **Reply #144 on:** April 04, 2016, 12:39:56 PM »

That pistol looks like quite a handful!

Looking good!

UCChris · « **Reply #145 on:** April 04, 2016, 12:47:19 PM »

Thanks, Paul. It's a sweet shooter. Won't be a pistol for much longer!

AmBraCol · « **Reply #146 on:** April 04, 2016, 12:52:43 PM »

Quote from: UCChris on April 04, 2016, 12:47:19 PM

Thanks, Paul. It's a sweet shooter. Won't be a pistol for much longer!

I figured as much from your posts. This build looks interesting indeed. Looking forward to seeing how you finish it out! (are these builds ever, truly, finished?

)

Buldawg76 · « **Reply #147 on:** April 05, 2016, 03:37:34 AM »

Quote from: BigTinBoat on April 04, 2016, 10:16:40 AM

Quote from: buldawg76 on April 04, 2016, 04:52:23 AM
Chris
Ok cool but it just pain me that I did not get on the forum to see the issue you had so I could direct you to the threaded inserts that would have solved the epoxy letting loose issue. but keep me updated on the newer stock and I will keep you updated as well.

On the disco end cap the threads for the RVA screw I believe are going to be 12-28 but not sure as its actually there in that end cap to degass the gun by threading a long screw into push the hammer open against valve pressure so it was not intended to be an RVA hole but works very nice for one.

Tomorrow will be a busy day so not sure if I will get any testing done or not but will see if I can since I am eager to see how it groups.

Mike

Disco end cap is 10-32

Rob
Chris has it right as the ones that hold the end cap in the tube are 8-32 and like I said I was not sure on the one for the RVA screw and thought it might be 12-28 but is in fact 10-32 so thanks for the correction.

Chris you got it looking better with the end sanded and painted red ( not my favorite color ) but it looks cool but I bet its a handful as AmBraCol stated. So waiting to see what you have in store next.

Did not get a chance to do any work or shoot today as just got busy and ran out of time and tomorrow is not looking good either so just going to play it by ear the next few day and hopefully will get back to it by the weekend. When our next cold front hits and drops the temps to the low 30s in the am which is not normal for april in Alabama at all, it should be 60s in the am and high 70s in the pm. I thought the gopher did not see his shadow and it was going to be an early spring. Just cannot trust mother nature anymore. LOL.

Mike

Monkeydad1969 · « **Reply #148 on:** April 05, 2016, 10:00:01 AM »

Nice Chris. Looks like a Ruger Charger.

UCChris · « **Reply #149 on:** April 05, 2016, 12:09:55 PM »

Quote from: Monkeydad1969 on April 05, 2016, 10:00:01 AM

Nice Chris. Looks like a Ruger Charger.

Thanks! The red stock was actually inspired by your Nail Gun. I don't usually prefer red, but when I saw the tank cover on your Nail Gun, I wanted to try it out.

Monkeydad1969 · « **Reply #150 on:** April 05, 2016, 02:09:46 PM »

Very cool...

But I am sure the QB is the better build, just because of the work put into it. Now, show us the finished shooter!

UCChris · « **Reply #151 on:** April 05, 2016, 02:41:38 PM »

Quote from: Monkeydad1969 on April 05, 2016, 02:09:46 PM

Very cool...

But I am sure the QB is the better build, just because of the work put into it. Now, show us the finished shooter!

Unfortunately, now that I'm living at college, I have to travel to my parents' house to use my dad's tools so I can only work on my airguns once a week on my day off of work. Which is probably for the best; my grades couldn't handle me being able to tinker daily. What it amounts too is that I won't be able to post pictures of the finished gun until Thursday.

Gipper · « **Reply #152 on:** April 05, 2016, 09:25:05 PM »

Chris,

Nice job shaping that pistol grip....she looks great. Look forward to seeing it finished.

Brian

Buldawg76 · « **Reply #153 on:** April 06, 2016, 03:28:03 AM »

Is it Thursday yet LOL.

I got my errands all done today and have the QB filled and ready to test the lower reg pressure tomorrow to see if its still at 850 fps or has lost a little bit so will know then if I have to go back up to 1300 psi or can leave it at 1250 psi and just sight in and enjoy. Will keep you posted.

Mike

UCChris · « **Reply #154 on:** April 06, 2016, 03:50:49 AM »

Quote from: buldawg76 on April 06, 2016, 03:28:03 AM

Is it Thursday yet LOL.
Mike

Tell me about it. Only 33 hours until I get to finish this project up. Figure 10 more hours of work and 6 hours for sleep and I only have to survive 17 more hours!

UCChris · « **Reply #155 on:** April 07, 2016, 01:45:08 PM »

Well, I'd love to post pictures of the rifle all finished, rave over how awesome it is, and create a new thread in the hunting gate about me taking it out after finishing it.

BUT

My boss nixed my day off for the next two weeks...

But

it wouldn't have mattered anyway. The Ebay listing I bought the stock adapter from said the guy had two on hand and would be to my place between April 2 and April 6. Well, he decided to ship on April 6th. So the stock adapter isn't even at my place yet. I'm going to go up to my parents house on Sunday and hopefully knock this project out.

AmBraCol · « **Reply #156 on:** April 07, 2016, 01:48:37 PM »

Life. It throws curve balls.

We're "glued to the tube" waiting for when it comes together for you!

Buldawg76 · « **Reply #157 on:** April 07, 2016, 02:13:58 PM »

Chris
Don't you just hate when your bosses pull that "got to work on your days off" stuff on you like you don't have a life and plans made for your days off already. So this stock adapter you are waiting on what is it and how does it work, got a link to the eBay page for it.

Well finally got to shoot my 79 today for some numbers and had to go back up to 1300 psi reg output since the 1250 psi setting only yielded an average 815 fps from the JSB 10.34s instead of the 853 fps with the reg at 1300 psi. so 1300 psi it is and got to mount the scope after the wife's doc appointment this afternoon and sight it in and enjoy it for now.

Eventually I will tear in to it and do some valve work and install my 2240 RVA end cap so I can adjust hammer spring tension from outside the gun without disassembly and fine tune it to 900 fps for my FT matches.

Mike

mackeral5 · « **Reply #158 on:** April 07, 2016, 02:46:01 PM »

I'm thinking the stock adapter is similar to this one:

http://www.ebay.com/itm/Crosman-2240-22xx-Custom-Stock-adapter-for-Tippmann-stocks-with-power-adjuster-/152038139885?hash=item23662de7ed:g:HeQAAOxy3HJTIKAR

Already has a hidden RVA built in, could be converted to ssg. I've got a little 22xx/QB Franken gun project that is using one.

Quote from: buldawg76 on April 07, 2016, 02:13:58 PM

Chris
Don't you just hate when your bosses pull that "got to work on your days off" stuff on you like you don't have a life and plans made for your days off already. So this stock adapter you are waiting on what is it and how does it work, got a link to the eBay page for it.

Well finally got to shoot my 79 today for some numbers and had to go back up to 1300 psi reg output since the 1250 psi setting only yielded an average 815 fps from the JSB 10.34s instead of the 853 fps with the reg at 1300 psi. so 1300 psi it is and got to mount the scope after the wife's doc appointment this afternoon and sight it in and enjoy it for now.

Eventually I will tear in to it and do some valve work and install my 2240 RVA end cap so I can adjust hammer spring tension from outside the gun without disassembly and fine tune it to 900 fps for my FT matches.

Mike

UCChris · « **Reply #159 on:** April 07, 2016, 03:25:57 PM »

Yup, just like that one. The Tippmann 98 style stock slips in and is held by set screws.

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QB79 HPA build for GTA member

Author Topic: QB79 HPA build for GTA member (Read 58418 times))

BigTinBoat