fas 6890

[safecracker33]

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[MartinHewitt]

very clever lock

It sure is! One of my favorites.

[madsamurai]

Neat, I didn't realize any of the FAS locks were wheel-pack designs like that, I thought they were all up/down levers. Reminds me of the LaGard 2200 series, but on steroids... I feel like I really need one of these now. What sort of pick protection is in there? From looking at it, you'd think a 2-in-1 would have little trouble with the same techniques you'd use for the 2200s.

[MartinHewitt]

It is not from FAS. The Swiss invented it. I think it can't be picked. The metal part on the "drive cam" is the manipulation protection. See the patent in my post.

[safecracker33]

7 Levers or disks operated by a double bitted pipe key with a barrel and curtain would be problematic enough, but the clever bit is a spring loaded rotary cam that pre loads as the key is turned, pauses and then snaps past drop in very quickly, so all the lever gates and drive cam need to be aligned when the spring cam snaps past drop in, or the lever arm will not drop in, we also used to see these with the timebination add on, so the key would wind the DAT and then only retract the bolt once turned again in the open window.
Unfortunately these were not the most reliable of locks in use, so getting a good working one will be a struggle nowadays. I built three up out of parts a bit back and whilst two out of three worked fine with a key, they would not change combination cleanly, bit of a pain after you have gone through all the palaver of stripping them down to reset them.
I have never heard of this lock being picked.

[madsamurai]

Oops, sorry, was confusing the thread title with the post content... Yep, read thru the patent and that's how I understood it as well. Too bad about the reliability... I assume they're no longer in production then..

[MartinHewitt]

They were only produced for a few years and never certified. One issue with them was that the key post, which was screwed into the curtain/drive cam got lose and was screwed out with usage. The post was than pressed to the back of the lock which made turning of the key harder and harder.

PS: The relocker is also quite nice. On the photos of the open lock you see behind the lever a brass plate which is actually a spring loaded lever. It is held in the unlocked position by the brass pin which you can see through the hole in the stainless plate directly behind the lever. When the stainless plate is moved a bit the pin falls outs and the relocker snaps to prevent an opening.

[Oliv]

Few information about 6990.

https://twitter.com/sosafeservices/stat ... 30625?s=21

[MartinHewitt]

Video of the MP mechanism of the Prima MP

https://vimeo.com/509408670