Bumping Master Keyed Locks

[DiamondHead.exe]

Suppose I were to bump a normally (read: non master keyed) keyed lock, the upper pins would have the energy transfered to them and would fly up, hopefully opening the lock.
Now if i were to bump that same lock but the pins were to be keyed for several keys. Only the topmost pin would fly up on each stack. What if the upper pin in for ex. stack 5 still wouldn't be lifted to the shear because of newtons law that the last pin on either side would receive the energy... not the middle one. So could it be possible to key a lock with master pins to defeat bumping?

If you need a picture, tell me and ill whip one up in paint.

Thanks for all the replies in advance!

diamondhead

[JackNco]

as long as the shear line is clear the lock will open, so no matter how many pins are in there bumping is possible/plausible (I say plausible because I am not convinced you could bump a zero lock.)

You are also looking at this as if physical laws are perfect, you are not taking tolerances (pins bouncing around) and friction in to consideration. hope that helps.

John

[Eyes_Only]

I've bumped a few cylinders I've masterkeyed and I have to agree that it does seem a bit easier. Guess its no different than using a raking method on a masterkeyed lock.

[robert11]

Guess its no different than using a raking method on a masterkeyed lock.

Also thinking in that way - may be its same as raking on masterkeyed locks

[robert11]

Guess its no different than using a raking method on a masterkeyed lock.

Also thinking in that way - may be its same as raking on masterkeyed locks

[robert11]

Guess its no different than using a raking method on a masterkeyed lock.

Also thinking in that way - may be its same as raking on masterkeyed locks

[Neo]

I've bumped a few cylinders I've masterkeyed and I have to agree that it does seem a bit easier. Guess its no different than using a raking method on a masterkeyed lock.

Come on!

No, it wouldn't be the same! That's why I created my thread. It's about energy transference through a range of motion, one range of motion. Raking is very repetitive. For what I understand, bumping is suppose to be more simplified than raking. With raking, you've got to imagine the lock cyllinder a lot. It seems with bumping, you wouldn't have to; but it would help to know how a cyllinder lock works.

[guest5999]

unless it's a cylinder with a master ring, bumping a master keyed cylinder doesn't matter. at rest, the master pins still aren't obstructing the shear line, only the top pins. so the energy is still transferred to the top of the stack which then jumps and clears the shear line

[Beyond]

at rest, the master pins still aren't obstructing the shear line, only the top pins.

That's entirely dependent on the setup.

[guest5999]

barring something with two shear lines (icore, master ring) i can't see any reasonable setup in that configuration. even if there was a given cylinder with a master pin that obstructs the shear line while at rest, yeah, it'll be a problem for bumping, but it's not acting as a master pin. instead it's more akin to just having 2 top pins.