lock with more than one shear line easier pickable? DOM RS

[pillar]

Hi

Some specific locks are system locks, they have different keys for different entries, including a master key.
When a lock has more than one shear line, is it easier to pick then?
Assuming a pin tumbler lock with no control pins on the side.

How can one find out how many shear lines a lock has?
Is it possible without disassembling?


How many shear lines can a DOM RS lock have?

[GWiens2001]

What do you mean by more than one shear line? Very few locks have more than one shear line.

A couple examples of locks with more than one shear line are Best (or any brand of SFIC) and Corbin Master Ring locks. Those make it more difficult to pick.

If you are talking about normal locks with master pinning, then yes, each master pin added doubles the number of working keys, which also doubles the chances of picking the lock.

Gordon

[jimu57]

Locks with a master ring have 2 seperate shear lines.

[kwoswalt99-]

What model specifically, RS Sigma or RS8? There's really no way to know how many wafers are in the lock unless you take it apart. I don't know the maximum number of wafers that can be added, but I don't think there is a limit. I've seen some Dom locks that have more than one in every chamber.

[pillar]

Hi

With shear line I meant:
spring - lower pin - upper pin - upper pin

in one chamber. This way two different keys can be used, in this specific case there are more keys.
It is a DOM RS, the key only reads RS, not RS8 or sigma.
There are no side pins as on RS8 keys (google pics), so I believe the only way to get a key system is by adding more key pins in one chamber.

Or did you read shear line as round cylinders that can be turned, one inner cylinder one outer cylinder? That is not the case.

[Joshua904]

I believe you're talking about a lock that is master keyed.
I'm not familiar with your specific lock, but yes it should make it easier to pick since in each pin stack you have 2 places to set it.
If you just had a 3 pin lock (example) keyed to something like 242 - then you'd have to pick to just those heights.
If the same lock was master keyed to 464 then you could pick to that, or 242 - and any combination of the two like 444, 262, and 264.

Hope it makes sense.

[kwoswalt99-]

Or did you read shear line as round cylinders that can be turned, one inner cylinder one outer cylinder? That is not the case.

Yes, that's what we think of when we hear "multi-shearline" locks. What you're describing is, as Joshua said, a master keyed lock.