update on my Bird’s repair

I have no idea what the pull is. Never checked a trigger weight before because most PCPs I’ve owned had adjustable 2nd stages, and I could find a suitable feel. I wonder if Kalibrgun will make the second stage adjustable as part of the improvements (if any) to the model. I don’t consider myself qualified to polish triggers, and starting on the most comlicated PCP I’ve ever bought wouldn’t be the brightest idea I could come up with.
darryl

The Bird isn’t so much cooked as it is “done”, as in repaired and working flawlessly so far. 😉 Only a couple of magazines through it just to test’s function, shooting in my basement. (I’m waiting for a brass sleeve that will fit over the stock cocking-bolt handle.) In talking with Peter I now understand that adjusting the power is not a best achieved by adjusting the hammer spring, but by adjusting the regulator (aside from Ernest’s suggestion of rotating the barrel). Like Ernest, Peter is very impressed by the engineering that went into the Bird. I am too; so much in fact that it’s the first PCP airgun that I won’t tinker with aside from making a power adjustment. About not adjusting the hammer spring, Peter had done some experimenting on using softer hammer springs but ran into a problem with not enough hammer force to also advance the magazine. Plus there’s a plunger in there that he polished, but found out that it created a vacuum which affected something (I don’t recall what now) so that he had to rough it up with 80 grit to return the function to normal. He has a Bird he tests and experiments on, so no, it’s not a customer gun. 🙂 I like a gun that’s a bit different from the regular herd so the Bird also has that appeal for me. I don’t even mind the pull weight on the trigger, though I was very impressed by the trigger tune Ernest did. Maybe a bit of moly to reduce friction can be used?

Those two magazines I ran through it were confidence builders with regards to the repair. Obviously I’ll feel even better with more time and use. It’s nice to be able to load pellets in a passive magazine versus the spring-loaded types I’ve been used to from various makers. That part is quite the design too, as is the indexing mechanism of the gun, of course. Very ingenious use of a magnet with the index mechanism too.

I’d posted an observation about accuracy as it related to the orientation of the shroud holes. I don’t know how the repair might affect that now, but I did one thing to reinforce my observation. I put a thin o-ring on the gun where the rear of the shroud fits over. This allowed me to snug the regulator to just the 6~12 position I’d observed earlier. Probably helps seal something a bit better too. Can’t be sure. along that line I slipped a small o-ring over the threads of the cocking bolt handle because it easily loosened up, and I did not want to use a tool to torque it down, nor use blue LocTite. This little o-ring allows me to go finger-tight and it’s snugged up just fine.

I can only hope for some decent weather so I can get to a range and see what the Bird will do. I’d be very pleased if it could do sub-MOA out to 60 yards. So far no one has posted groups at that distance or beyond. Anyone able to reach out that far with his Bird and post groups here?
darryl

This morning I received a tracking number from Peter. True to his word, he’s sent my Bird within the week, as promised. As of 5:30 pm yesterday it’s on the road to me, and should be here for turkey day. He reports the reason for the extreme blowby was the absence of a breech seal. :suprisedn: There reason for the sudden drop of air from the reservoir was a blown regulator seal, It just let go. Though I have tinkered with PCPs in the past, I did not intend nor do i intend to tinker with this one, except to lower and raise the power, if that’s not too much trouble to do. I’ll be happy to get it back.
darryl