unpickable Yuema 360 free spinning lock mechanism

[Squelchtone]

Ran across an interesting lock on ebay http://www.ebay.com/itm/271879298377

The design is really clever and does not allow you to tension it for picking purposes. The cylinder can always free spin, but only the correct key can turn the plug AND cam.

A little pricey at $60+ dollars, but the auction I ran across did contain a link to a nice youtube video done by Barry Wels explaining the lock mechanism.

Video 1


Video 2


Most interesting,
Squelchtone

[Mitchell S]

Did you pick one up for your collection?

[kwoswalt99-]

It seems pretty cool. It reminds me of the rivers lock, as well as one of my own designs. I can't wait to see how it works. I wish this computer allowed youtube videos. The rim lock is a little cheaper. http://www.ebay.com/itm/UNPICKABLE-Pick-Proof-Bump-Proof-YUEMA-750-Cylinder-High-Security-Rim-Cylinder/281701979430?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20131003132420%26meid%3Dc902d1dce3cd4ea1b8e5a735849018e4%26pid%3D100005%26rk%3D4%26rkt%3D6%26sd%3D271879298377&rt=nc I might just have to buy one and pick it. I was surprised that the seller wasn't fifth season.

[kwoswalt99-]

It seems pretty cool. It reminds me of the rivers lock, as well as one of my own designs. I can't wait to see how it works. I wish this computer allowed youtube videos. The rim lock is a little cheaper. http://www.ebay.com/itm/UNPICKABLE-Pick-Proof-Bump-Proof-YUEMA-750-Cylinder-High-Security-Rim-Cylinder/281701979430?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20131003132420%26meid%3Dc902d1dce3cd4ea1b8e5a735849018e4%26pid%3D100005%26rk%3D4%26rkt%3D6%26sd%3D271879298377&rt=nc I might just have to buy one and pick it. I was surprised that the seller wasn't fifth season.

I just realized that the one I linked to is a different design. I would guess that this one is similar to some of the goldatom padlocks, the older GM locks, and a really old patent I found, but can't seem to find again. I guess I will have to buy both of these locks, and disprove their claims.

[tomasfuk]

...disprove their claims.

You are right. When I saw the video ... it's pickable.

[Squelchtone]

...disprove their claims.

You are right. When I saw the video ... it's pickable.

Well, you know Barry Wels made that video, and he's one of the best pickers in the world, so I have to believe he knows what he is talking about. Given enough time I'm sure someone can make some sort of specialized tool, or a stiff piano wire pushed back all the way to create friction between the plug sections, that will tension that lock, or try out keys that water down the possible combinations to a small number of try out keys or rakes, but I don't think it is pickable with normal pick set tension wrench and pick.

What ideas do you have to pick this mechanism?
Squelchtone

[stainless steel]

.

[tomasfuk]

... Barry Wels made that video, and he's one of the best pickers in the world, so I have to believe he knows what he is talking about...

I suppose he is just preparing the public for his theatrical picking demonstration, like Harry Houdini did it

...What ideas do you have to pick this mechanism?
Squelchtone

Ideas that belong to the Advanced section, not here.

[smokingman]

As with other split plug locks , a tension wrench long enough to reach the back of the plug should defeat
the free rotation feature and allow tensioning.
A special tensioner of slightly unusual shape might also be needed.
I don't believe it is unpickable,but the rest would have to be in the advanced forum I suppose.
Just my thoughts.

[mh]

Matching thread in the advanced section: viewtopic.php?f=14&t=61007

Cheers
mh

[tomasfuk]

Matching thread in the advanced section: viewtopic.php?f=14&t=61007
mh

Do you think that Squelchtone does know that?
No other disputant can see it

[Squelchtone]

Matching thread in the advanced section: viewtopic.php?f=14&t=61007
mh

Do you think that Squelchtone does know that?
No other disputant can see it

I can see it. You have to have access to that area.. you'll have access soon enough.

Squelchtone

[GWiens2001]

Quite fascinating. Thanks for the video links, Squelchtone. It would be fun to play around with one of these.

Unfortunately, like many of the cool-key padlocks that Marduk finds, the picture of the shackle on that eBay listing looks like it can be shimmed.

Gordon

[kwoswalt99-]

Quite fascinating. Thanks for the video links, Squelchtone. It would be fun to play around with one of these.

Unfortunately, like many of the cool-key padlocks that Marduk finds, the picture of the shackle on that eBay listing looks like it can be shimmed.

Gordon

It would appear that they have been lying to us then. A quote from them

The lock itself has a deadlatch mechanism, which ensures that the lock cannot be shimmed open.

I think that this lock, in a way, is quite similar to those locks I mentioned above, except that in this one, the cylinder is free spining. The trouble is, and I'm sure that we all realize, that turning the core doesn't tension the lock. However, it isn't undefeatable, the lock provides it's own tension. In it's rest position, the sidebar will automatically proide feedback, but it isn't enough to hold the tumblers in position. So, as I've thought before, some type of sputnik tool? It seems plausible with the keyway as open as it is. I don't think I can elaborate here though. I think what squelchtone said about tryout keys might be plausible, because the tumblers don't have to be perfectly aligned. The sidebar will pull itself in fully, even if it is sticking out a hair.

[Mitchell S]

I just bought one. Will try my sparrows shims out when it arrives and report back!