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PostPosted: Sun Sep 24, 2017 12:03 pm 
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Joined: Mon Jan 20, 2014 10:32 pm
Posts: 758
Location: Burlington ON
My 1740 project has worked out really well but the trigger is terrible. If I squash the spring that is inside the grip a bit, it can be made lighter but then it does not pierce the CO2 (as I recall when I first tried this about a year ago...).
As it is, I need to dry fire a couple of times to get the CO2 flowing - I think because the snipped hammer spring also influences this.
Is the custom adjustable trigger kit (around $65) worth it or will I just end up with CO2 issues?


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PostPosted: Sun Sep 24, 2017 12:07 pm 
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Posts: 2776
Location: Somewheres near the Atlantic
I think the whole problem is your hammer spring. When I made my 1740 to shoot 180 rds from one C02. I had to fire it a few times for it to pierce. Nature of a clipped spring.

Installing the trigger kit shouldn't effect the piercing of the C02 at all, or the delivery. All it does is limit the effort it takes to pull the trigger for the sear to let go the hammer.


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PostPosted: Sun Sep 24, 2017 3:28 pm 
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Location: Winnipeg, Canada
...or install a P-rod grip frame and trigger assembly, and be completely done with trigger issues, regardless of hammer spring tension. You will have to come up with a non-waisted hammer- but It's better than entirely worth the effort.

-D.S.

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PostPosted: Sun Sep 24, 2017 3:52 pm 
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Joined: Sun Nov 06, 2011 2:16 pm
Posts: 1638
Location: 1/2 Way From Ottawa and Montreal,
Doc Sharptail wrote:
...or install a P-rod grip frame and trigger assembly, and be completely done with trigger issues, regardless of hammer spring tension. You will have to come up with a non-waisted hammer- but It's better than entirely worth the effort.

-D.S.



Got a link for this kit?

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PostPosted: Sun Sep 24, 2017 4:31 pm 
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Joined: Sat Nov 03, 2007 4:19 pm
Posts: 8973
Location: Coalmont BC
It's a Crosman part, the complete trigger assembly for the Marauder Pistol.... You will also need either the hammer to go with it, a hammer from a Challenger, or you will have to fill the "waist" in your 2240 hammer.... The hammer MUST be straight on the bottom, with no hollow frm the waist, or you cannot cock the gun without pulling the trigger....

I agree that your CO2 piercing problem is all hammer spring related, and NOT related to the trigger sear spring....

Bob

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Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
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Too many! Springers, Pumpers, CO2, but I love my PCPs and developing them!
Proud Member of the 2000+fps Club!


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PostPosted: Sun Sep 24, 2017 8:01 pm 
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Joined: Mon Jan 20, 2014 10:32 pm
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Location: Burlington ON
Thanks all, sounds good and probably worth the investment.


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PostPosted: Sun Sep 24, 2017 8:21 pm 
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Joined: Sat Mar 16, 2013 5:15 am
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Location: Edmonton
Kewl stuff to know. Thanks guys.


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PostPosted: Tue Sep 26, 2017 7:29 pm 
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Joined: Mon Jan 20, 2014 10:32 pm
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Location: Burlington ON
Just coming back to this, my hammer snipping adventures have given me about 55-60 good shots from one CO2. I have only had one opportunity to measure, seemed to be doing right around 500 fps.
Snip more? Start again with a new spring? Add some washers to put more tension on the current spring? Leave alone?
This is what I was getting - the black circles are half an inch so approximately:
20 yd : 1/2 in
30 yd : 3/4 in
40 yd : 1 1/2 in
Worth spending more on the trigger kit (or anything else for that matter) or will this be as good as it gets?
Also, anyone know why the groups start to fall away to the right? Is that me pulling them or something like scope alignment?


Attachments:
170924 - 1740 at 20-30-40 yd.jpg
170924 - 1740 at 20-30-40 yd.jpg [ 165.79 KiB | Viewed 512 times ]
170924 - 1740 w Hawke scope.jpg
170924 - 1740 w Hawke scope.jpg [ 594.78 KiB | Viewed 512 times ]
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