QB 79

[ribbonstone]

Mr. Archer's speed of delivery strikes again...no damage, and what looks to be a very good stock.
Not tuned in any way, just cleaned and test fired so far...no leaks, functions fine.

Happy camper.

Think the little 3.5oz. tanks are going to work out.  From a balance point of view the rifle feels lively.

Looking good.

Did you have to do anything special to get the 3.5oz. tank to fit under the barrel?

Thanks

[Gene_SC]

Lookin good Rib. And Mr Archer is a great guy to deal with as well. Great service.

Gene

[Big_Bill]

Congrats Ribb,

Very nice lookin shooter you have there !

Best of luck with her..

[ribbonstone]

I added an on/off valve.  Could screw the paintball tank directly to the gun as it comes out of the box. As the tanks have a pin-valve (works like the valve in the valve stem of a car tire), could detach the tank by unscrewing it...would waste some gas until that pin valve shut, so having an On/OFF vavle works out a lot better.

The little 3.5oz. tanks are the same dimeter as the 9oz. tanks...just 1/2 as long and lighter. The 3.5 oz. bottle comes in at 14.6oz. filled, the 9 oz. tank comes in at  24.6oz. filled....and the extra 10oz. is out towards the end of the barrel.

[shadow]

She's a looker and a bottle fed baby. Ed

[longislandhunter]

Rifle looks great.  Best of luck with it.

Jeff

[ribbonstone]

Out of the box, averaged 563fps with 14.3gr. and a 10fps variation.  Not bad, about average.

(1) Tuned the trigger...like some have posted, the overtravel screw is  backed out so far it's liable to fall out and the sear engagement is super deep.
(2) Removed the barrel to clean the rest of the shipping ear-wax out of it (with barrel off the gun, can blast it with carb-cleaner).
(3) Barrel holding screw was one-finger-tight as issued...and had that internal burr around the threaded hole that cuts the o-rings.  Interresting, there was a burr right under the tapped hole for the set scew, which looked like they ran the tap in a tiny bit too far and it "dinged" the opposing side.  Deburred and polished the inside of the reciever and bolt way, replaced o-rings.
(4) Bolt handle set scrrew was loose..bolt was loose...deepened the little detent in the bolt and tightened the screw on reassembly.
(5) Replaced the transfer seal with ice-maker line seal.
(6) Bolt probe passage measures right at 7/64ths....which is the drill size for a 6-32 tap, so it's a pretty common size.
(7) Drilled the bolt probe's transfer port to 7/64ths.
( Cleaned the hammer and spring and re-lubed with a little silicon grease.

That's it...left the main tube alone, didn't touch the valve.

Averages 601fps/14.3gr with a variation of 4fps over 10shots.  

When I ordered this, posted that I'd quit as soon as the chronograph winked out 600fps...which it did...so I'm leaving the internals alone.

Sorry you missed my question.

I'll ask once more, "Did you have to do anything special to get the 3.5oz. tank to fit under the barrel?"

Thanks

[ribbonstone]

..my first answer came out at the top of this thread...but will answer again.

You can screw any standard paintball tank that will fit under the barrel to the gun as it is issued....the 3.5oz. and 9 oz. will fit (is limited by diameter).

Problem is, there is no good way to turn the gun off and remove the tank (unless the tank is empty).  So adding a simple on/off adaptor (it screws into the gun, paintball tank screws into it) lets you turn the tank off...shoot what is trapped in the gun (with a QB79, that's only 3 or 4 shots)...then remove the tank.

Picture at the top of the thread...the 3.5oz. tank is screwed into an on/off, and that's screwed into the rifle.

So to make things short, you had to do nothing.

[ribbonstone]

.   .

[CharlieDaTuna]

Not sure why the question would need to be asked again when it was perfectly answered the first time.  It would seem that if a person would take the time to read the answer after someone answers his question, you would realize that he didn't miss your question at all and answered it beyond what was needed to ensure clarification.  Then it was very easy to come to the conclusion that .... "no... he didn't need to do anything". It can't be any more plain than that and it seems that everyone else related to it just fine and the answer seemed pretty simple and straight forward to me. And I ain't very smart...lol...  

[ribbonstone]

...doing in the heat (at least it's hot here).  To get a fair  comparative test, have to set the shop AC to 85F and let it stabalize

[CharlieDaTuna]

Not sure if you mean me Rib but it is hot here also. It's been at or over 100 degrees here for about the last ten days and that's in the shade. If I have the Co2's out there in the sun for long, especially the bottle fed, they just may lock up on me. It has happened before when the jugs were full and on the bulk fed also. (over fed it...lol...)

I really do like the "D" model I got from Mike though. The lead gets out of the shoot chute at about 700 fps using 14.3's and 85 degrees or so and a real tack driver. Of the five QB-xx's that I have, it's a tossup between that and my model "T". I've just about given up on the HPA idea though. Who knows.