Author Topic: DAR Gen II is now available (Read 79115 times - 3 votes)
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RDB · « **Reply #620 on:** February 11, 2021, 05:19:41 PM »

A bore brushing and polishing turned mine into a laser.

Firewalker · « **Reply #621 on:** February 11, 2021, 07:38:44 PM »

Then that is what I will do, I just wish I could pull the barrel so I could get to the chamber and avoid the o-ring.

RDB · « **Reply #622 on:** February 11, 2021, 08:23:35 PM »

Quote from: Firewalker on February 11, 2021, 07:38:44 PM

Then that is what I will do, I just wish I could pull the barrel so I could get to the chamber and avoid the o-ring.

Just 2 allen set screws. Im not advocating being dishonest to the manufacturer. But there is simply nothing to screw up by doing so. Slides right out. You need to remove the breach oring do do any sort of good job at it.

Firewalker · « **Reply #623 on:** February 11, 2021, 08:35:42 PM »

I see 4 grubs, not 2.

Insanity · « **Reply #624 on:** February 11, 2021, 09:13:09 PM »

2 barel band and 2 on the top of the breech and the barrel is out. Easy peasy.

Firewalker · « **Reply #625 on:** February 11, 2021, 09:21:37 PM »

OK, Ill check.

Quote from: Insanity on February 11, 2021, 09:13:09 PM

2 barel band and 2 on the top of the breech and the barrel is out. Easy peasy.

Back_Roads · « **Reply #626 on:** February 11, 2021, 09:29:04 PM »

Quote from: nervoustrigger on February 11, 2021, 01:02:18 PM

Yeah I feel very fortunate that the pre-production gen 2 I got for testing has yet to develop a leak. Meanwhile I also know this represents little more than postponing the inevitable. High pressure air is relentlessly motivated to find its way back to the atmosphere. Even while we sleep. 24/7/365.

Ordinarily there would be something that prompts me to crack it open even if it’s not leaking, the tinkerer that I am. But the regulator doesn’t creep, the poppet knocks open easily, and the setpoint and porting happened to be right where I like them for JSB 15.9gr and 18.1gr (~30fpe) so I’ll ride this out as long as I can. And because it is so remarkably accurate, when the day comes the air makes good its escape, a re-seal job will be quick to follow.

If I may add my consumer version .177 has been rock solid since day 1, only thing I did was a light bore polish, didn't need much and my turtle wax bore polish to make it shine. Doesn't creep or purge air even going through this Wisconsin winters extreem temp swings. Call me impressed !

RDB · « **Reply #627 on:** February 11, 2021, 09:32:07 PM »

Quote from: Firewalker on February 11, 2021, 09:21:37 PM

OK, Ill check.
Quote from: Insanity on February 11, 2021, 09:13:09 PM
2 barel band and 2 on the top of the breech and the barrel is out. Easy peasy.

Under the front scope mount.

Firewalker · « **Reply #628 on:** February 11, 2021, 09:44:32 PM »

Thank you gents! I completely lost vision on the screws, I though the barrel and threaded retainer were 1 piece and that the 4 grubs held the barrel to the breech. The 2 screws on top seemed strange so I dismissed them. Yupper, EZPZ!

I also am thinking about getting a barrel blank now, tight twist for slugs. Mmmmmmmm, options!

Now, lets chuck it up and check runout.

Insanity · « **Reply #629 on:** February 11, 2021, 09:47:24 PM »

Welcome hope you get some good data.

Firewalker · « **Reply #630 on:** February 11, 2021, 10:27:30 PM »

By the looks of it, it has a 1:18" twist, the rifling looks good, no noticeable defects. I may have to remount the barrel and do a double check but it looks like 0.0012" runout and a LOT of marks on the outside denoting where the barrel was bent to straighten it. The major deflection is till along that line in a spiral pattern.

I would love to have a container of liquid Nitrogen to dip this in to right now.

Firewalker · « **Reply #631 on:** February 11, 2021, 10:28:07 PM »

Who can I send this to to have a new barrel made?

Firewalker · « **Reply #632 on:** February 12, 2021, 07:54:36 PM »

Gave the barrel a good scrubbing and cleaned it out very well, held it up to blue sky and I think this may be the roughest barrel I have ever seen! Of course, this may be the case on all airguns, I surely dont know but none of my PB's have such rough bores and now I am no longer surprised that it takes so many pellets to foul the bore enough to create a good slip layer for the pellets to travel down equally.

Four grits of polishing compound did nothing to the bore, even flitz didn't brighten it up any but I went ahead and waxed it as well and will put pellets trough it tomorrow after reassembly.

I think I have at least taken down the burrs from cutting the rifling, the test will be in the groups.

Rat Sniper (AKA: PaulT58) · « **Reply #633 on:** February 12, 2021, 07:57:58 PM »

Sounds like AimSprts should send you another barrel. My air gun barrels a all shiny, sounds like you may have gotten a bad one.

Firewalker · « **Reply #634 on:** February 12, 2021, 08:19:58 PM »

Um... they should but the warranty thing may preclude them from doing so. I'm heading into the shop to yank the first DAR's barrel and see what it looks like.

(From 35 years on smithing, using a blue sky gives you a completely different view of a bore, the shine is often missing and any defect can be easily seen.)

Firewalker · « **Reply #635 on:** February 12, 2021, 09:49:37 PM »

Check your barrels, DAR owners! My rough barrel is actually pitting! There is also some pitting on the other one but not nearly as bad.

crazyhorse1 · « **Reply #636 on:** February 12, 2021, 10:14:30 PM »

Think I would fire lap it. Did a airgun barrel 7 years ago and worked out fine.. It appeared to have some pitting but barrel came out clean, shinny.

RDB · « **Reply #637 on:** February 12, 2021, 10:31:30 PM »

Quote from: Firewalker on February 12, 2021, 09:49:37 PM

Check your barrels, DAR owners! My rough barrel is actually pitting! There is also some pitting on the other one but not nearly as bad.

I kinda wondered. When i did my initial scrubbing with the bronze brush...I got a lot of brown out of the barrel. My liberty was the same way. But, when the wind is calm. I have no problem hitting a 1 1/4 metal t post at the fence line at 97 yards. Just have to see how she shoots. I do lube my pellets with silicone spray.

Firewalker · « **Reply #638 on:** February 12, 2021, 10:48:21 PM »

I have it all back together, scope on and bore sighted, Ill put a few pellets downrange and see how she does.

Rich, I learned my lesson on an Enfield with fire lapping a pitted barrel, the lapping compound digs in on far side of the pits and elongates them. Ill just fire it as is and see how it goes.

Ron, me too. Lots of brown but I mistook it for cosmoline and without the bore scope, it looked like a rough broaching, up close, they are definitely pits.

crazyhorse1 · « **Reply #639 on:** February 12, 2021, 10:55:22 PM »

I used a product like this for fire lapping...just dip the pellet and shoot it numerous times.....then clean the barrel.

https://www.napaonline.com/en/p/PTW7652657

One of the causes of pitting is improper cleaning...or riding in a shipboard container for 20-30 days at sea...lol.

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DAR Gen II is now available

Author Topic: DAR Gen II is now available (Read 79115 times - 3 votes) )

Author Topic: DAR Gen II is now available (Read 79115 times - 3 votes)
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