Author Topic: Any one ever heard of the Dynamic PCP air rifle? (Read 57528 times - 1 votes)
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nervoustrigger · « **Reply #500 on:** September 29, 2018, 07:21:09 AM »

Well regarding the slow leak through the vent hole, this evening I was delighted to find the needle hadn't budged in almost 48 hours.

I took it outside and set up the flashlight downrange to re-zero it at 43 yards, and it was the quickest and easiest zeroing session I can remember. 4 pellets.

I think we're ready

Wayne52 · « **Reply #501 on:** September 29, 2018, 11:35:21 AM »

Jason I just took my 25 apart to replace the internal o ring on the regulator and the old o ring was literally in terrible shape, looked like it had be in there rotting for ten years almost, just terrible I can't believe how low quality the orings are that they used on these guns, I'll put it back together and air it up, and there's no doubt in my mind it's going to cure the slow leak.

I also turned the regulator up another quarter turn, that should put it into the low 900's with the 26 grainers while it'll still sling the 34.5 grainers decent.

Wolverineshooter · « **Reply #502 on:** September 29, 2018, 11:52:11 AM »

Good to know it's the O-ring within the regulator having the problem, hope that fix things for all

Wolverineshooter · « **Reply #503 on:** September 29, 2018, 11:53:23 AM »

The leaking is very slow. Mine did not lose much air at all in the last 48 hours either, but last time I did not touch for two weeks all air are gone

Wayne52 · « **Reply #504 on:** September 29, 2018, 11:58:32 AM »

Greg if the o rings in my .177 & .22 are that nasty it's only a matter of time before they start leaking too. Now I need to do another Chrony test to see how the regulator is acting now, it's gotta be better and will probably help for the up and down swings of pellet velocity and will probably also preserve on the air as well.

Wolverineshooter · « **Reply #505 on:** September 29, 2018, 03:07:36 PM »

I should probably change all the o-rings, if that is all the problem then after fixing it we should have greater shooters

Wayne52 · « **Reply #506 on:** September 29, 2018, 03:23:48 PM »

Great both of my other DARS are still holding air just fine but it stiil tick's me off knowing they probably have the same sub standard o ring on the inside of the regulator. I kinda think that most of the slow leak problems are from this -12 o ring and I'm glad Jason discovered it, he's pretty good at things like this I think. After I took that other o ring out I could put it on my little finger and roll it and all kinds of minute pieces of rubber came off it, they're plain junk and why the Chinese didn't address a lot of things that are bad with these guns I'll never know, it must have been for the quick buck.

Rat Sniper (AKA: PaulT58) · « **Reply #507 on:** September 29, 2018, 08:22:11 PM »

I ordered some of those O-rings for the regulator since I’m sure mine will probably fail sooner than later. May as well be ready for the inevitable!

Another issue popped up on my DAR25. I was shooting it today, zeroing in a new scope I got for it and the cocking lever is blowing out at a 45 degree angle every time I take a shot. Any ideas on what could be causing this and how to fix it?

Wayne52 · « **Reply #508 on:** September 30, 2018, 01:19:13 AM »

My .22 does the same thing Paul and I noticed the magnet on it isn't aligned as good as my other two. It didn't do it at first but it's doing it occasionally now. I'm thinking that whoever it is that's getting going on the second generation of these guns (if in fact they actually do make them) they'd better be doing some extensive testing of the older models because they're going to find many things wrong with these guns that haven't been discovered yet. I sure do wish they'd hurry up with their magazines though cause I could sure use some.

Rat Sniper (AKA: PaulT58) · « **Reply #509 on:** September 30, 2018, 09:40:56 AM »

Mine just started doing it yesterday, I was wondering if maybe there is an o-ring inside the chamber area that might need to be replaced? These really are great little guns, it's too bad there are so many minor QC issues. Hopefully, the Gen 2 models will have addressed and fixed all these. A huge plus 1 on getting those magazines! I'd like to have at least 3 per rifle, even though at the current tune, I can only make it through 2 before having to refill with air!

Wayne52 · « **Reply #510 on:** September 30, 2018, 02:32:00 PM »

Paul did you replace the o ring inside of the regulator too, it's a -12 and Jason replaced his with a 90duro one, I did the same thing and my slow leak disappeared.

Rat Sniper (AKA: PaulT58) · « **Reply #511 on:** September 30, 2018, 02:39:10 PM »

Quote from: Wayne52 on September 30, 2018, 02:32:00 PM

Paul did you replace the o ring inside of the regulator too, it's a -12 and Jason replaced his with a 90duro one, I did the same thing and my slow leak disappeared.

Not yet, they are in the mail and should be here tomorrow. So far mine’s not leaking but I’m sure it will start if they are the cheap Chinese ones like yours and Jason’s.

nervoustrigger · « **Reply #512 on:** September 30, 2018, 11:16:34 PM »

Hey guys, I got to thinking about the regulator construction and decided to diagram it out on a piece of paper, and I think there is another O-ring down in the slender portion of the regulator body. When you take out the knurled brass thumbscrew (the valve seat) and look up inside the regulator body, you'll see a brass ring that can be removed with a slotted screwdriver. I'm pretty sure it traps an O-ring that seals against the OD of the stem portion of the regulator spool. When I was working on mine, I was in a hurry to get finished up so I could put the little ones in the tub and I didn't bother to remove the brass ring to see what was behind it. Thankfully my leak was solved but I wanted to give you guys a heads up to look for it because you probably want to replace it given the track record of O-rings on this rifle.

Gertrude · « **Reply #513 on:** October 01, 2018, 12:03:21 AM »

You are correct
There is a small Oring inside the regulator.
I have replaced it with a white Viton oring and will see how it holds sometime next week.

nervoustrigger · « **Reply #514 on:** October 01, 2018, 03:08:19 AM »

Hi Ron, okay thanks for confirming the other O-ring. Did you happen to notice if the original had the flakes that Wayne and I found with the O-ring on top of the spool?

By the way, today the DAR laid down its best 5 shots at 43 yards...0.183in CTC, comes out to 0.41 MoA. The more I shoot it, the more I like it.

Wolverineshooter · « **Reply #515 on:** October 01, 2018, 03:16:40 AM »

Fantastic Jason!

Bob Pratl · « **Reply #516 on:** October 01, 2018, 06:08:35 AM »

Jason, very nice, Great gun and shooting.

Wayne52 · « **Reply #517 on:** October 01, 2018, 07:23:07 AM »

Thats an amazing five shots you did with the DAR25 Jason !!! You'd really appreciate the other two calibers I'm sure, I have a photo still in my camera of a red squirrel I took out yesterday for yard guard using my DAR177 while I was casting pellets, I cast another few hundred very nice 23 grainers in .22, I'll be continuing to stock pile my cast pellets because my first attempt at casting yesterday it was just too darned cold out and the lead oxided really fast with cold hitting it, I had to wait until it got warmer and was successful then with some quality.

nervoustrigger · « **Reply #518 on:** October 01, 2018, 10:57:53 AM »

Thanks Greg! Thanks Bob! I was chasing a wandering POI just prior to those shots...was trying different things with the barrel band and stock to see if I could remedy it. Still need to test some more, particularly after it has been stored overnight. That’s why I was procrastinating about taking it down to address the slow leak. The POI was stable but after reassembly, it wasn’t.

No doubt there’s a bit of luck involved because my setup wasn’t very stable. Forestock on a pillow and the buttstock shouldered so I was really focusing on my hold and timing my heartbeat. At the same time, I could probably set up the shooting bags and go through a whole tin of pellets without duplicating it.

Wayne, you do a great job on the castings. Very nice! Seems like you’ve recently gotten 2 or 3 different dies. So far what is your best combination? Pellet and rifle.

Wolverineshooter · « **Reply #519 on:** October 01, 2018, 11:06:31 AM »

POI wandering - I was having this issue a day ago when I was shooting my Stormrider .22. I got dramatic POI shift(jumps). I figured there may be a pellet clipping the muzzle suppressor issue based on the sound, so I looked throughthe barrel and and rotated it trying to center the suppressor. Afterward it became much better. But still there are shifts. I assume that was due to speed change as the rifle is not regulated, but still, it seems moved more than I expected.

I did add a second barrel band right behind the muzzle, not sure if that is the best position, or if that is the cause of the shift.

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Any one ever heard of the Dynamic PCP air rifle?

Author Topic: Any one ever heard of the Dynamic PCP air rifle? (Read 57528 times - 1 votes) )

Author Topic: Any one ever heard of the Dynamic PCP air rifle? (Read 57528 times - 1 votes)
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