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All Springer/NP/PCP Air Gun Discussion General > China/Asian AirGun Gate

Umarex Octane Match-Grade-Trigger upgrade

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Ronno6:

--- Quote from: Novagun on November 24, 2023, 02:51:12 PM ---All has gone down hill after the six or so shots with the new duck bill trigger part. It will now not allow the piston to cock. The trouble seems to be that a second face has been ground on the point of contact between the new part and the corresponding sear. Whether that is by design or accident i don't know but the texture of the grind is different to the machined texture . Not a big worry as it was only 100 odd bucks and replacing the old sear brought the rifle back to normal . I still have a good useful rifle that tells me that I do not want a Diana 350.
I just might have a go at making my own sear. File and emery paper. Maybe an excuse to buy a Dremel. We will see .
A new Dremel. See you later. Got to go and look at prices.

--- End quote ---

Possibly a trigger screw adjustment ??

Jshooter71:

--- Quote from: Ronno6 on November 25, 2023, 09:15:00 AM ---
--- Quote from: Novagun on November 24, 2023, 02:51:12 PM ---All has gone down hill after the six or so shots with the new duck bill trigger part. It will now not allow the piston to cock. The trouble seems to be that a second face has been ground on the point of contact between the new part and the corresponding sear. Whether that is by design or accident i don't know but the texture of the grind is different to the machined texture . Not a big worry as it was only 100 odd bucks and replacing the old sear brought the rifle back to normal . I still have a good useful rifle that tells me that I do not want a Diana 350.
I just might have a go at making my own sear. File and emery paper. Maybe an excuse to buy a Dremel. We will see .
A new Dremel. See you later. Got to go and look at prices.

--- End quote ---

Possibly a trigger screw adjustment ??

--- End quote ---

That very well could be the cause, also.

Ronno6:
Trigger adjustment hot-to on Umarex Octane.
Dunno exactly which Umarex the Mr. Hugh is working with.

 

Novagun:
My Umarex is the Octane Elite with the Stopshox recoil absorbtion system.
I have played with the trigger screw and eventually taken it right out.
As far as I can see that screw only provides a bearing surface for the trigger to bear on the top trigger lever. It also takes up the freeplay in the trigger travel. With a longer trigger screw you could take out all the freeplay plus a bit to get the a half engaged position that might make the trigger lighter or at least moRe sensitive. I don't want to do that because a half engaged trigger in a magnum springer seems dangerous to me.
I have completed the new duckbill type lever and installed it. It works and has positive latching stop and discharge. It is made of steel but not yet hardened. It is still a hard trigger and i guess a magnum springer at 22 to 25 ft/lbs is always going to be strong or a bit heavy , I don't have a gauge to measure trigger pressure so I just go by feel. Now that I know what I am doing there I will make another duckbill type but slightly different in dimension to get to where I want it to be.
It has been interesting making the part and a good self teaching lesson.

Novagun:
I have made another small modification to my homemade duck bill trigger part and I now have a reliable and comfortable trigger. I don't know the exact weight but it suites me just how I wanted it.
The Tim Montano replacement part just did not fit my particular trigger group well but it was the incentive to make my own and without the TM one I would still have a very heavy trigger.
The whole exercise was satisfying and at times frustrating but was worth it. Thanks to interest from Ronno6 to stir me on.

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