Addley Precision |
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Honkytonk
Senior Member Joined: December 30 2017 Location: Brandon Mb Status: Offline Points: 4770 |
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Posted: March 16 2018 at 5:03pm |
Received my new Addley Precision mount today. Wow. It was stout! Way sturdier than the Sun Optics! They supplied another safety thumb lever. Not sure what for as it's the same length, only thinner. I installed it. Didn't work. The original has sort of threads on the inside that moves the actual safety. The new one was smooth. I reinstalled the original. All looks nice!
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A square 10
Special Member Donating Member Joined: December 12 2006 Location: MN , USA Status: Offline Points: 14452 |
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post some photos when you got it ready ,
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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There should be 2 parts to the safety that work or block the action. The actual shaft which should have a "D" shaped end. This is the actual "safe" that holds the cocking piece disengaged. & the "ring with a tab" which is used to lock the bolt & stop it cycling with the safe engaged.
Might the safe be now be JUST locking the cocking piece, but leaving the bolt operable (for things like unloading I guess)? |
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Honkytonk
Senior Member Joined: December 30 2017 Location: Brandon Mb Status: Offline Points: 4770 |
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Shamu. Good points. The D shaft you mention was the same on original and Addley, connected to the thumb lever. The original was "threaded" by which I mean more like a worm drive. It was pretty affixed to the D shaft. The Addley did not have this worm drive. It would not engage with the actual safety, which did have a corresponding worm drive. When the Addley was installed, I could move it both ways with no engagement. Put the original back in, cycled bolt several times testing if safety was functional. It worked perfectly.
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Honkytonk
Senior Member Joined: December 30 2017 Location: Brandon Mb Status: Offline Points: 4770 |
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Again, I apologize to the forum for not having the capability of supplying pictures. The original thumb lever that engages the actual safety mechanism, has a smooth shaft, on this is (I call it a worm drive) then reduces in size and ends with a D notch. The actual safety mechanism, when pulled out, has corresponding "worm drive". Makes sense. Thumb lever needs to have a stable point to engage D notch. Addley replacement had thumb lever, smooth shaft with now worm drive, then reduces to the D notch.
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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What you call the "original safety" is the bolt lock.
Try it without that piece & see if it holds the striker, but allows the bolt to move. |
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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englishman_ca
Senior Member Joined: September 08 2009 Location: Almaguin Status: Offline Points: 1089 |
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Without the safety catch (the bit with internal multi-thread that engages the bolt's cam track) mounted onto the locking lever (the thumb lever), and when in the safe position with the striker in the cocked position, the bolt can still be popped open and will retract half an inch under striker tension?
That is how the locking lever on the Mk.I Lee Metford functions. It was removed from production early on only to reappear 13 years later, but with the additional safety catch part. So this lever that was supplied to you is a puzzler. We need pics. Any teenagers around?
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. Look to your front, mark your target when it comes! |
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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I'm guessing, but it may be to allow a "thinner" safety mechanism,so the mount can be more easily centered over the bore?
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Honkytonk
Senior Member Joined: December 30 2017 Location: Brandon Mb Status: Offline Points: 4770 |
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Spot on Shamu! Same length, milled thinner.
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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So does it lock/ disengage the cocking piece, but allow for bolt cycling?
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Honkytonk
Senior Member Joined: December 30 2017 Location: Brandon Mb Status: Offline Points: 4770 |
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It does not engage or disengage the safety like the "original".
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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But does it back off the cocking piece when engaged?
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Honkytonk
Senior Member Joined: December 30 2017 Location: Brandon Mb Status: Offline Points: 4770 |
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No sir. It does feel like it engages anything. Just free wheels from safe on to safe of position.
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Honkytonk
Senior Member Joined: December 30 2017 Location: Brandon Mb Status: Offline Points: 4770 |
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To be quite honest, Shamu. I'm not sure why they supplied this safety thumb lever. The original is totally accessable and has full movement.
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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Beats me!
Maybe e-mail them & ask just to satisfy your curiosity? One of the finickiest things to do when mounting & collimating the P-H 5A sight I had was the safety! I'd just get it dead square in all 3 axies & the safety shaft would bind in the mount! GRR! ARGHH! Talk about precision fit! |
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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