medeco 'biaxial' knob cylinder

by **frollard** » 20 Jul 2004 17:16

I know this is a secure forum thing - so I'll keep it simple (or stupid, one of the two)..

I got these cylinders off ebay - medecos...fancy

comes with 3 keys, 2 different. a control "C", and user keys "A" and "B". - they are IDENTICAL except one says control on it. and the keycode stamped on them.
what significance is this?

AND the cylinder itself, how do you attach a tailpiece? theres no threads - just a spring clip holding the plug in the cylinder.
pics:
http://frollard.serveftp.com:81/image/medeco/
thanks in advance.

by **Varjeal** » 20 Jul 2004 18:41

This is an educated guess, but from the looks of the lock cylinders you have the "control" key may be a master key. The easiest way to tell is to try the keys. You may find that two of the keys will work individual locks while one operates them both.

Depending the what the code looks like, it may either be a direct bitting code, or more likely an indirect reference number to the actual bitting.

The tailpiece is already attached, it's that discolored looking piece on the end. Your cylinder pictured there is called a "key in knob" or k.i.k. cylinder.

by **frollard** » 20 Jul 2004 22:41

clarification - the control key and user keys are identical in every way. I bought 2 - they are the same way - different cuts.

and as for the tailpiece - I have 'regular' kik cylinders, and they have the spring loaded pin holding the threaded nut on the back, to keep a (more literal) tail protruding. this one has nothing, and the piece thats attached doesnt seem to have anything that would engage with any unlocking mechanism.

any other ideas

by **HeadHunterCEO** » 21 Jul 2004 18:29

frollard wrote:clarification - the control key and user keys are identical in every way. I bought 2 - they are the same way - different cuts.

and as for the tailpiece - I have 'regular' kik cylinders, and they have the spring loaded pin holding the threaded nut on the back, to keep a (more literal) tail protruding. this one has nothing, and the piece thats attached doesnt seem to have anything that would engage with any unlocking mechanism.

any other ideas

the schlage way of attaching tail pieces is one style of many.
there is no tailpiece on the the ass end of that plug.

that might be for a medeco padlock.

it would not take too much imagination to see how a post mounted on a disk would pop the shackle.

the cylinder drops in to the padlock.

thats my guess

by **Factotum** » 24 Jul 2004 9:37

From the looks of your reference, the cylinder is for a Sargent & Greenleaf Model 833C High Security Padlock, I am sure that it could be use in other models as well.

by **frollard** » 25 Jul 2004 23:44

padlock cylinder eh? thanks!

any idea what the difference between the 2 keys is?

by **Factotum** » 26 Jul 2004 4:41

The control key is used to disassembled or assembled the lock body. The control key is used by a key and lock control and is not normally used on a daily basis. It should only be used to service the lock. The other two keys are used as service keys for daily use. If you look at the control key and service keys, you will notice a difference in the shape of the key near the bow. The control key will allow the key to be turned in both directions. The opposite direction is what allows the lock body to be disassembled or assembled. The service key can only turn in one direction. They do not allow the lock body to be disassembled or assembled. Follow the link and it will better explain than I can. http://locks.nfesc.navy.mil/pdf_files/tds-2043.pdf

by **frollard** » 29 Jul 2004 11:27

thats the thing - I'm 100% sure, after VERY VERY close analysis that the keys are TOTALLY identical, except for the shape of the head, from the shoulder onward, they are totally identical, every cut, the keyway, length, no extra cuts or nicks, shavings etc. Other than that it makes sense what you're saying.

by **CaptHook** » 29 Jul 2004 19:43

Given the precision required for the key to operate that lock, maybe its to be kept seperate for copying if needed? As a worn key would possibly not give a good copy.
Just a thought.
Chuck

by **frollard** » 2 Aug 2004 22:39

I've got it figured now - the bottom of the key has an extra 'shoulder' - whereas the control does not - allowing the control to turn if the cylinder is put into a recessed (what would you call it) - butterfly hole. (hole which only allows key to rotate 90 degrees. - this key is 'smaller' so it would miss those allignment marks.

medeco 'biaxial' knob cylinder

medeco 'biaxial' knob cylinder

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