Kiwi Airgunners Forum : Crusher trigger www.kiwiairgunners.co.nz/ This is an XML content feed of; Kiwi Airgunners Forum : Pauly's Technical Area : Crusher trigger Copyright (c) 2006-2012 Web Wiz Forums - All Rights Reserved. Wed, 22 Apr 2026 20:51:09 +0000 Fri, 11 Aug 2017 09:09:27 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 10.14 360 www.kiwiairgunners.co.nz/RSS_post_feed.asp?TID=347 Kiwi Airgunners Forum www.kiwiairgunners.co.nz/forum_images/logo.jpg www.kiwiairgunners.co.nz/ Crusher trigger : I got the grubs screws from blacks... www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2307#2307 Author: xyon
Subject: 347
Posted: 11 Aug 2017 at 9:09am

I got the grubs screws from blacks fasteners M3 diameter 20mm long I think. (use a 2.5mm drill bit)
Yep they have a hex socket in the end, so you can screw the screw right up inside the trigger.

http://www.blacksfasteners.co.nz/Contact-Us/Blacks-Fasteners-Christchurch-Stores-Sydenham-Store-__I.10982


]]> Fri, 11 Aug 2017 09:09:27 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2307#2307 Crusher trigger : Hi xyon, can you please tell me... www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2306#2306 Author: Gabion
Subject: 347
Posted: 11 Aug 2017 at 4:43am

Hi xyon, can you please tell me where you got your grub screw from and what size you ended up using? Called on at a couple of places today and smallest they had were 3mmx5mm which am thinking will be a bit short. I assume you used a hex socket head?]]> Fri, 11 Aug 2017 04:43:59 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2306#2306 Crusher trigger : thanks for sharing - very helpful!... www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2305#2305 Author: Gabion
Subject: 347
Posted: 08 Aug 2017 at 5:03pm

thanks for sharing - very helpful!]]> Tue, 08 Aug 2017 17:03:19 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2305#2305 Crusher trigger : To mod the trigger, install the... www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2303#2303 Author: xyon
Subject: 347
Posted: 08 Aug 2017 at 4:55pm

To mod the trigger, install the grub screw in the position shown. The trigger will most likely be hollow in this area so fill with JB weld or epoxy. (clean all traces of oil/grease first) Drill and tap after it's cured. Use the vibratite (or PVA glue works!) to stop the screw from moving after you have adjusted it, but will allow future adjustment.

Remove the spring in the trigger, it is not needed. (keep the other spring(s) that act on the sears.)
Round off and polish the tip of the screw for smooth operation.
The closer the grub screw is to the pivot (without touching it) the more distinct the first and second stages will be.

There will probably be a small amount of play in in the trigger, which you can ignore, but if it bothers you there are 2 solutions. Install a second grub screw in the front part of the trigger, but this could affect the safety, so I preferred to add a small bushing around the pin (on the right of the pic). about 7mm diameter. The trick is to find the size which just takes up the play, any bigger and you will start to reduce the sear overlap.

Thanks to Steve in NC who's picture I have hacked.
]]> Tue, 08 Aug 2017 16:55:19 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2303#2303 Crusher trigger : Nice work. Predictability is paramount.... www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2026#2026 Author: Pauly5
Subject: 347
Posted: 19 May 2017 at 3:22am

Nice work. Predictability is paramount. I have a Daisy 953 that has a stiff trigger, but with a polish is is smooth and reasonably predictable, which is an improvement.
I see you have a Zoraki too. Have you played with that trigger?
]]> Fri, 19 May 2017 03:22:54 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2026#2026 Crusher trigger : Hi Nunga,I wouldn't say it's... www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2025#2025 Author: xyon
Subject: 347
Posted: 19 May 2017 at 2:24am

Hi Nunga,
I wouldn't say it's an awesome trigger, but is much better.
As I'm sure you know, the pull of the faux first stage in the original is just a (rather stiff) spring, which I removed. The distance from the grub screw to the trigger pivot is about 1/2 the distance of the original lift point. So that would reduce the force by 50% but it's not that simple. The secondary sear's pivot location is working against us so the reduction in force is not quite 50%
Most of the trigger weight is the friction from the sear and trigger being forced together by the main spring. So that is where a polish of the sears helps + a bit of molly.
The weight of the second stage pull would be almost the same as the original minus the spring I removed. I adjusted the grub screw so the second stage travel is very short, so yeah, Tongue the main advantage is the predictable break point.
]]> Fri, 19 May 2017 02:24:24 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2025#2025 Crusher trigger : how did that work out for you?... www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2020#2020 Author: nunga
Subject: 347
Posted: 18 May 2017 at 7:49pm

how did that work out for you? shouldnt think it would improve the pull weight at all but at least you should know when it is going to fire
]]> Thu, 18 May 2017 19:49:32 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2020#2020 Crusher trigger : I recently got a crosman crusher... www.kiwiairgunners.co.nz/forum_posts.asp?TID=347&PID=2018#2018 Author: xyon
Subject: 347
Posted: 18 May 2017 at 6:44pm

I recently got a crosman crusher second hand. It's the bog standard crosman/gamo 25 piston 100mm stroke engine, but with a gas spring. The trigger is not great on these, so I decided to mod it to give a true second stage the same as a GRT or GTX trigger would. I drilled a hole through the trigger tapped it and installed a grub screw that presses on the sear to give the first stage lift. I also filled to void inside the trigger body with epoxy resin to better support the grub screw in position.


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