Inside the Hummingbird–Now the tuning & issue begins!
I will post all internals and how the bird work and whats need tuning or improvements in this Topic. This BP is going to be a hit, vary well made over the cricket.
Got her today so I will cover several area as I go along tuning and adjusting:
1. the gauge isn’t aligned properly in my book. So if you have a standard cricket gauge socket it will fit the HB, but 1st the AT must be vented
under the trigger guard is where the standard fill hole and use the same fill probe as the cricket, as you can see on the photo near the fill hole is
the bleed screw—-> its a larger heavy duty screw compare to the cricket. After all the air is vented the AT can be unscrew—this AT wall thickness is thick and heavy–so vary unlikely you wont dent the AT in normal use–even dropping the HB. the oring that seals the AT is 3mm X 30mm. the fill
check valve is the same size as the cricket, had to increase the fill rate to my liking vary easy to do.
2. Now I’m having issue with the bolt blowing back when shooting pellets, when it does a lot of air will blow on your cheek and scare the shit out of me the 1st time it happen also the speed will drop about 8 to 12 fps. now it blow back about 2 to 3 time a mag full that not good—have to find this problem. Has to be the locking ball of some type—its like a free floating bolt after its cock if nothing locking it in place it will blow back! If anybody has this problem let me know!!!! 😥
All Replies
Hi Ernest,
I fully agree on this, this is the PARAMOUNT condition for a High End air rifle.
If the trigger isn’t outstanding then the air gun can never be High End, regardless of which brand we are speaking about and regardless the money they sell for.
Just my opinion.
ATB
Had accuracy issue this morning, not grouping so I shot a mag full in the air on top of this 11 floor building 60 yard away to see the flight of the pellet, what I saw was the pellet shooting vary high then left and right while tumbling . So I cleaned the barrel with no improvement. then started to look at the shroud and look in the baffles but look OK then decided to disassemble the baffles then I notice the front cap was loose–anyway I remove the cap and removed all 5 dirty baffles so cleaned and inspected with no signed of clipping or anything that wood affect the accuracy. while reassembly I notice there are vent holes on the baffle so started to think what alignment should I install them and then thinking of the Vent holes on the shroud—should I aligned the 4 vents with the baffle vents—- well that’s what I did then tested the flight test again——what I notice all 14 shots was dead ctr in the cross hair, while shooting I notice there was more air coming out of the vents (not the vents I drilled) was a little loader due to the extra air coming out of the vents, So I wanted to know if I point the vent hole on the barrels further away from the vent hole on the shroud—then tested the fight —- well I notice I was getting flyers and some unstable so I switch back to which the vents are facing each other—-wow it was shooting dead on again—to get the story short, the baffle arrangement affect the accuracy due to unstable turbulence, so I would think reducing the pressure in the baffles chamber.
here in the 1st photos after I cleaned the baffles—-I would think it’s normal to just throw in the baffles back in without thinking about the vents.
the 2nd photo is the arrangement of the baffles aligned with the vent on the shroud. I would think you can adjust the vents 1/4 off to reduce the sound, but I’m thinking its quieter with vents aligned when your in front further away listening and my accuracy is great–so I’m leaving it at that for now.
I think with different arrangements and some felts outside the baffles will reduce the blast, but that’s for another AG’er can tinkle with.
Anyway I think the loose end cap miss arranged the baffles that affected my accuracy–so make sure the end cap are tight.
Ernest, I’d forgotten I was subscribed to your YouTube channel. Look forward to some HB tutorials as they come. Let us know how that spring mod works out, plus the part numbers of the replacement spring. MIght as well build thAt knowledge base. :biggrinn:
Darryl
Ernest
Thank you for your time to do the breakdown of the .22 HB. I can’t wait for Kalibrgun to release the .25 HB. This is the caliber I want in this model.
darryl
You know that large spring inside the shroud—that helps a lot in closing the bolt fast so the HB doesn’t leave your shoulder if it didn’t have the spring.
I have tested a stronger spring—to close the bolt by its self—just cock back and let go —–>before you put you left hand on the AT to aim its close.
Did I say that the shroud has 2 vent holes for every baffle chamber total of 4 baffles??? it has some king of reducing macro screen to control the amount of air that is vented, like the huggett. . Now I did——->just didn’t hear it 
We have another winner! Thanks Ernest. Is the cocking effort so light that you can rack off shots as fast as you say? Not that I doubt you. A rhetorical question ,to put it another way, did Kalibrgun give us the next best thing to the semi-auto in a quick-firing Hum(dinger)? Are those defanged semi-auto pieces inside? Let’s see. You did the out of box accuracy test already. Right? Keep up the good work!
darryl
The Hummer sure seems to be the buzz around here. The bird appears to be south paw friendly from my observations with the forward caulking mechanism looking to be as left hand friendly as it is for right hand. The magazine sits flush with the breech – is this also true for right side of breech for the lefties? I ask because some pictures seem to depict this while others don’t. Just wondering about check weld for left hand shooters. Any insight you care to share for the left hand brothers here would be much appreciated.
It’s GREAT to have you share so much with us.
Cheers
Not only the mag seat flush on top but also the side angle of the breech,and its flush with the stock and its identical on both side so theirs really noting going to poke or hit anything sharp on your hard press cheek weld, but I do feel the slight rotation of the mag when I cock but noting to complain about—just an assurance that the mag is indexing.
I tied shooting lefty–and I can shoot it just as fast.
I’m going through a lot of pellets with this HB, its just a fast BP to shoot–I mean I can shoot off 14 rounds in 14 second if I wanted too.
The only thing I wish it had was a slot for the cocking handle to be lock in open position so I can load the mag one handed, as of now it takes two. I’m getting the hang of loading the mag—-if the mag isn’t flush with the action and stock its not in right–when it is the cocking handle will close every time and load a pellet—-when I’m not going to shoot right away I de-cock when I do shoot I cock right away and it won’t double load and it don’t matter how many time I de-cock—for me I never leave a hammer spring compress to long for that reason I rarely don’t use the safety—-> don’t get me wrong its the best safety I ever seen in a BP–vary positive rocker click and when its on that trigger blade is rock solid and vary easy to get too unless your a lefty.
I’l post a video in how to load the mag in the action the fast way.
next tuning topic is how to get the 2nd stage break down below 8 OZ, right now its at 1 lb 12 OZ out of the box that’s to much for my liking.. Have already adjusted the 1st stage tension down to 2.0 OZ—then how to adjust 1st stage travel. to get the best accuracy the trigger is the main factor in my book.
What are the options for attaching a picatinny rail and bipod to the air reservoir on this gun?
Ernest, you’re doing us all a favor by delving into this new product; sort of like an investigative reporter. Letting us know the nitty-gritty; the good, and the bad a you see it is a real confidence-builder for the community. I know I’d had concerns with regards to a Kalibrgun trying to resurrect interest in the name “Colibri” with a different version of the product from the original intent (of being a semi-auto). I hope the dealers are following this thread as it gives insight into how the ‘Bird is being received, plus the good and the not-so-great features (like the power adjustment, and that finger-fatiguing cocking bolt handle.
I don’t think I have the equipment to drill my shroud Ernest-style, but it’s an opportunity for an exchange program for some enterprising machinist. Can’t thank you enough, man. But don’t let the praise go to your head or you’ll never get a hat on that thing again! :rofl:
Hope you had a good night’s sleep. Now back to work with you. We want more info, of course. :winkn:
Darryl
Ernest,
The Hummer sure seems to be the buzz around here. The bird appears to be south paw friendly from my observations with the forward caulking mechanism looking to be as left hand friendly as it is for right hand. The magazine sits flush with the breech – is this also true for right side of breech for the lefties? I ask because some pictures seem to depict this while others don’t. Just wondering about check weld for left hand shooters. Any insight you care to share for the left hand brothers here would be much appreciated.
It’s GREAT to have you share so much with us.
Cheers
~ GKU
To de-cock===pull and hold cocking lever then pull trigger then slowly push cocking handle forward—-when you cock again it will not advance another pellet—keep cocking lever it will not double load. only when fired it will advance another pellet. :8:
That’s just SWEETer !
~ GKU, sweet dreaming also in anticipation of what’s to come.
I’m sure the gun is capable of 70 shots. No doubt in my opinion. However, I think it is not likely to get 70 tight shots at 30 foot lbs with such a small air tube. Especially, if the HB and cricket share the same regulator. I’m assuming they have the same reg because they are made by the same company. I would love to be proven wrong but I think 50 consistent shots is more realistic.
The thing I respect about Ed from edgun is that he seems to underestimate his guns’ shot counts so that he over delivers on his guns. It may be a marketing ploy but I think it is better than advertising unrealistic figures and then under delivering on the actual product. That being said, I will put my money down and buy an HB soon because it is what I was looking for when I first bought a cricket. A sleeker profile with what seems to be a better design and build. These bullpups are getting to be like smartphone upgrades, lol.
Gabe
~ GKU
To de-cock===pull and hold cocking lever then pull trigger then slowly push cocking handle forward—-when you cock again it will not advance another pellet—keep cocking lever it will not double load. only when fired it will advance another pellet. :8:
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ColiBri Bull Pub .22 exterior introductions Youtube Video: https://www.youtube.com/watch?v=qoH3urMqaPo
Mag loading video http://youtu.be/GLnv3Siij6M
14 shots in 8 Sec: http://youtu.be/LrTUBwP00vc