GTA
Airguns by Make and Model => Air Venturi Airguns => Topic started by: sandog1 on January 28, 2023, 01:42:16 PM
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I've had my DF MKII for a couple months now and really like it, but a couple weeks ago it got to where it would cock but not fire.
I took the stock off and saw that the metal bar that screws to the receiver was loose. (The trigger guard screw and stock screw attach to the bar, which in turn attaches to the receiver). Cleaned the screw thread, put a drop of Blue Loctite on it and snugged it down. The rifle shot fine for a couple more weeks.
Now it's doing it again.
With the stock off, you can see that movement of the trigger will move the bar that is the sear upwards. When it travels far enough up, the sear will release the hammer.
For some reason now the trigger travel alone is insufficient to move the sear enough. If I take a punch or small screwdriver and push a bit more up on the sear, the hammer will fall, and then I can re-cock the action.
I have done nothing to the trigger group at all, when I got it I cleaned the bore, put some wax on the wood and mounted a compact 4x scope.
My Stormrider Gen II has an almost identical trigger (same manufacturer) but is adjustable and has the adjustment screws showing on the bottom, whereas the Dragonfly is non adjustable.
I could see where engagement could get insufficient if you were to move the sear adjustment screw too much, but how does my sear engagement change after 300-400 pellets shot through a new rifle with non adjustable trigger ?
The 3 trigger pins are in place, no bits of spring or other metal came out. I remember seeing a thread where the trigger on someone's Dragonfly got tied up and he determined it was a set screw that had come loose, but I see no set screw on my trigger assembly.
Airgun Depot said I was a couple days over their 60 day return policy and to contact Air Venturi. I did that last week but have yet to hear back from them.
Hopefully they'll get back to me and will replace the rifle, but if I don't know what caused this, it might also happen to the replacement down the road.
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There should be a small hex screw in the sear to adjust the affect of the trigger on the sear, that screw is known to rattle loose and you loose sear engagement resulting in no fire. added a drop of vibra-tite to it to keep it adjusted, and allow for fine tuning.
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Dang it, I typed out a reply and got a message that files included were too large, and all the text went away.
I reduced the size of the pics, got the same message. Further reduced the size of the pics, same thing.
Four times I typed out with smaller pics, and each time the reply was wiped out.
O.K., I'll try to do this and maybe add pics later.
Yes, James, there is a set screw hiding in there. Being a new gun that I haven't modded in any way I was considering sending it back, but glad now that i dove into it.
Remove the back(bottom) pin and the trigger will flop forward enough to get at the set screw.
It sure doesn't take much movement either way for things to get out of whack.
Before, my issue was the set screw had moved down, and the rifle would cock but not fire.
I initially moved it too far this morning, and then the rifle would not cock.
Backed the screw off a tiny bit more and now have normal cock/fire functioning.
Hopefully the blue Loctite will keep it there.
Thanks again !
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Yes that is the culprit and the cure, also the picture I never took along with other supernatural events I witnessed LOL 8)
IIR I also reversed the screw orientation to allow easier adjustment access ???
I Imagine it happens when tolerances on both items get close to out of spec. in opposite ranges ???
(https://www.gatewaytoairguns.org/GTA/index.php?action=dlattach;topic=205734.0;attach=424790;image)
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Here is the NEW diagram for DF II rifle.
https://www.pyramydair.com/model-schematic/m/seneca-dragonfly-mk2-multi-pump-air-rifle/5170#11990%20spart (https://www.pyramydair.com/model-schematic/m/seneca-dragonfly-mk2-multi-pump-air-rifle/5170#11990%20spart)
HtH's
Don