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Addley Precision

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Honkytonk View Drop Down
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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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Post Options Post Options   Thanks (0) Thanks(0)   Quote A square 10 Quote  Post ReplyReply Direct Link To This Post Posted: March 16 2018 at 5:48pm
post some photos when you got it ready , 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: March 17 2018 at 9:00am
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)?
Wacko
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 17 2018 at 11:58am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 17 2018 at 12:07pm
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: March 17 2018 at 4:44pm
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.
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote englishman_ca Quote  Post ReplyReply Direct Link To This Post Posted: March 18 2018 at 10:17am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: March 18 2018 at 12:34pm
I'm guessing, but it may be to allow a "thinner" safety mechanism,so the mount can be more easily centered over the bore?
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 18 2018 at 3:18pm
Spot on Shamu! Same length, milled thinner.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: March 19 2018 at 4:43am
So does it lock/ disengage  the cocking piece, but allow for bolt cycling?
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 19 2018 at 4:58am
It does not engage or disengage the safety like the "original".
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: March 19 2018 at 7:31am
But does it back off the cocking piece when engaged?
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 19 2018 at 8:30am
No sir. It does feel like it engages anything. Just free wheels from safe on to safe of position.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 19 2018 at 8:44am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: March 19 2018 at 12:31pm
Beats me!
Wacko
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!



Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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