Any one ever heard of the Dynamic PCP air rifle?

[tracker1955]

Yes, with the clear cover facing you turn the cover counter clockwise till it stops, put the first pellet in from the back skirt first, rotate the cover one position clockwise and drop in pellets one at a time till full. If you have trouble with all of them feeding correctly you may have to do what I did and drill a new hole in the back with a pin drill for the spring, drilling it offset from the original hole so it adds some extra spring tension so pellets feed ok till empty. My mag would only feed about 5 of the ten before repositioning the spring.

[TheSaint]

Had the same sticking issue with my mag, too. But I just loosened the Philips head screw a bit and that cured it.

[Gertrude]

Ron I use an Optivisor that I have from the electronics business and I use it on airguns often, very nice magnification along with a flash light I can't do without it.  It is really nice for my old vernier calipers too, I need to break down and buy another dial calipers, heck they're cheap at Harbor Freight now.

Haha, yep,
And wouldn't ya know it, I was just at HF today. I could have picked up one for myself


Here's the pin that I was talking about earlier.

[Gertrude]

I have not yet removed the air tube from this rifle so this may be a dumb question,
So I have not yet laid hands and eyes on the regulator or valve,
But has anyone here tried adjusting the output pressure of the regulator ?
If so, can you share what and how it was accomplished ?
Also, any valve or TP work you may have done ?
I would like to see if I can get the .25 up to around 75-80 fpe, while still regged.
Yes I realize shot count will suffer,
I am hoping to see a decent ES for one full mag.
Do you think this is possible ?

[Wayne52]

Yes, the last one I messed with was my 177, I turned it up a little, you need to unscrew the thumpscrew to turn it it up and turn it in for turning it down.  I had my 25 cranked up too far at one time that created a downhill fps starting out a little over 70fpe, I think the 25's come set close to 150 bar (mine had 149 written with a sharpie on it but it's rubbed off long ago) and I think for the 177 it came set at about 100 bar (again sharpie written on the reg 102). I measured the port on my 177 which is .133 and I might bore it out eventually but the thing already is pretty powerful the way it is.  I haven't experienced anything like valve lock fooling around with it either.

[tracker1955]

If I recall I think my regulator had 137 written on it, but I didn't write it down on anything, not like I could test it in any way. I also found that the jam nut wasn't tight, secured it with a wrench so it wouldn't unwind itself. I think Wayne had mentioned that his wasn't tight when he first opened his too.

[Wayne52]

Yep that was true on mine too Tom.  I think I could get a 10 shot string with 60fpe, I never did measure the port on my 25 but on the 177, it looks like you can open up the port another .017 to make it to 85% of the bore.  My 177 pellets will be here tomorrow, JSB Monsters, H&N Sniper Magnum and 2 tins of Eun Jins.  I'll run all three over the chrony before I decide on which to use in it Friday morning in the woods.

[kingrude1]

Well got the o rings today the AS568-116 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring from the oring store. Tore the Dar.25 back down and replaced the regulator with the 90s and the ones at each end of the tube again with the 70s. As Wayne said the 90s fit inside the tube real good and snug, I am hopeful that these will do the trick. Put everything back together and aired it up, because if this doesn't stop the leaking it is headed to Aim Sports and they can either fix it or give me another one. Thanks Wayne for leading the charge on getting these rifles sealed up from leaking.

[tracker1955]

David, was surprised you got the #116 o-rings, I think Wayne got #117's and that's what I ordered also. Be sure to let us know if yours sealed up ok and keeps holding air. I know Ryan at Aim wants to know, they are watching the forum threads to see what develops.

[nervoustrigger]

In most cases, when dealing with O-rings this large (approx 1in OD in this case), the two adjacent sizes will work virtually identically.  The smaller O-ring will elongate slightly more when it's stretched over the part but not enough to "stretch it thin".  In other words, the amount by which its cross section shrinks is infinitesimal.  Either O-ring fills the gap.

[Nvreloader]

Guys
The better half gave me the OK to get a new toy,    
it's between the Gauntlet and DAR.

If you have both brand names and shoot them, which would be your choice,
1st =22 cal then 17 cal?

What is the bbl length for each caliber?

When I check the SG, they didn't have any 22 cal available,
will keep checking, until they show in stock.

Tia,
Don

[Wayne52]

I just went and checked both the 177 and the 25, they're both right up to snuff as far as the pressure goes from the last time that I looked at them.  I've had the 25 out for a good extensive test in the woods, while I was out there I did 2 refills (not really needing to do either one at the time) to put it through the paces for making sure it was going to hold air good.  Just before I came home I once again topped it off to 3K and that's right where it's at now.  I think that the 90duro's are going to do the trick, I'm sure that I could let them both sit for a month now and they'd both still have the same air in them that I left them with.  I do have the -116 90duro's but they were just way too loose in the groove and in order to make them seal they'd have to be compressed quite a bit to seal in the groove, the 117's actually were a perfect fit as far as the ID and OD were concerned so that's what went in it, seemed like the best fit yet and I'm glad to say they're both still holding air.

[Wayne52]

I might also add that the 25 is much louder than the 177, after I had done the last refill on it just before leaving the woods I had to get rid of the pellet in the chamber so I picked out a poison ivy leaf on the side of a pine tree about 25 yards away and nailed it.  Scott and his dog(very cool Australian shepherd) were both watching when I did it, Scott commented on the loudness and I had to agree but it's still nowhere near as loud as my stock Disco is.  The thing that cracked me up was his dog Rudy ran right over to check out the falling ivy leaf after I shot it.  That dog would make a fabulous hunter, he's not the least bit gun shy at all and he reminds me of one of the best hunting dogs I've ever owned.

[kingrude1]

David, was surprised you got the #116 o-rings, I think Wayne got #117's and that's what I ordered also. Be sure to let us know if yours sealed up ok and keeps holding air. I know Ryan at Aim wants to know, they are watching the forum threads to see what develops.

That was an error I did get the 117s.

[Wayne52]

David I doubt you'll have a problem then cause when I seen that you said you installed the 116's I thought holy cow how the heck did he get them in there

[kingrude1]

David I doubt you'll have a problem then cause when I seen that you said you installed the 116's I thought holy cow how the heck did he get them in there

Lol no Wayne I made an error it was the 117s I purchased and put in there.  Unfortunately didn't completely seal it, still  leaked down some overnight. Had one last thought this morning and that was to put the 117s/ 90's on each end of the tube too, so tore it down quickly this morning and did it. Aired it up and went to work,  if it's leaked down some by the time I get home from work I am out of ideas anf it's time to contact Aim Sports to send this reject to them.

[Hoople]

Wayne, my DAR finally started leaking. Let me get this straight, you are using AS568-117 B90 (NBR) Buna-N Nitrile 90 Duro O-Rings for the regulator and 117 - 070s for each end of the tube?

[Wayne52]

That's what I'm using Charles, I just got back from the state land with my DAR177, man is that potlicker accurate, I was really surprised, can't wait to get my other pellets tomorrow
I use divers silicone grease on the o rings, I imagine silicone oil would work too.

[Wayne52]

This is what I've always used for o rings

[tracker1955]

Well, guys, I've hit a wall, got home from work today and found my package from the o-ring store, installed the regulator with two new buna-n 90 duro o-rings and I still have a leak at the vent hole in the air tube. I degassed the gun removed the regulator and inspected the o-rings for damage and couldn't see any but it would not hold air. Put two new 90 duro rings on the regulator and this time pushed the regulator in from the opposite end of the air tube, hiss again from the vent hole. Degassed the rifle again, this time tried two urethane duro 90 o-rings on the regulator, aired the rifle up and hiss again from the vent hole. Just contacted Ryan at Aim Sports to see if he has anything to add, but at this point my wife wants me to send it back for a refund and I'm inclined to agree with her. This rifle might be ok to revisit in the future when the bugs have been worked out, but for now, with this one, I think I'm done.