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I recently acquired this padlock and I'd like to manipulate it opened.
It's a 8077AB. The B stands for the colour of the dial which is green.
Being familiar with S & G safe locks, I can imagine how it works but,
if anyone has gut shots, I'd like to see them. Any tips on cracking this one are welcome.

http://s1155.photobucket.com/user/Altashot/media/S%20and%20G%20padlock%208077/DSC02224_zpse49a6dfa.jpg.html?sort=2&o=0

Thanks

M.

These are made to be almost manipulation proof. They have extremely good tolerances.. IIRC it is 0.5 of a number to each side. It would probably be easier to just put an auto dialer on it. I have an exploded view of the 8088 padlock if you want them.

You can try the factory combo of 4 turns left, stop at 25, turn right directly to 0 and pull the shackle as well as the common 10-20-30, 25-50-75 etc.

50 or 75 might be a little tricky. Numbers go from 0-49.

Gordon

I guess that is what I get for not looking at the dial before submitting my response

LOL! point taken anyways...Already tried the usual obvious combs.
Nearly manipulation proof you say...Only 125000 theoretical possibilities...
Since my OP, I found some pics on lockwiki. Not quite like I had imagined.
Vibrations?... maybe?...

M.

Had not though of vibrating the lock open. Might be doable. Let us know!

Gordon

I myself like to believe it is indeed possible to manipulate them. I have 3 (one is tore apart). It's one
of those projects you always "plan" to do... but just never seem to do, lol. Maybe I'll get to it this winter.
Be nice to find a consistant method. Seems like there's just SO MANY of em' floating around w/o a combo!

I haven't taken photos of mine, but I remember LSA tore one apart some time
ago in this video. Would at least give you a peek at the inner workings anyway.
Good luck my friend.... and I'd love to hear about it if you have some success.

Hi Altashot.

I have an S&G 8088, same mechanism I believe.

On the back are the patent numbers 2,673,457 and 2,625,032 .

Download the patents and I think you will see that they are impossible to manipulate via the dial.

There is a discussion of these locks on this site at;

Lockpicking - Sergent&Greenleaf - S&G Combo Padlock

I asked the question there, if anyone had ever heard and verified if these locks had ever been manipulated and no one here had.

I think that after studying the design you will see why they can’t be manipulated.

The fence does not touch the gates in the wheelpacks and does not drop into the gates till you pull up on the shakle. You have to turn the dial back to 0 after dialing in the combo and only then can the shackle be pulled up, ie. it has a three number combination plus 0.

If you DO manage to manipulate one (verified) I will start a religion in your name and I’m sure all the Keypicking community will join it and worship you for ever and ever………

Seriously, you will waste a lot of time and only learn that they can’t be non-destructively manipulated.

My two cents.

Cheers.

How about if the pull on the shackle itself where used as the contact point and measured ? Naturally the lock would need to be in a jig of some kind with the shackle pull being carried out by a consistent method (dead weight, or spring power) etc.

I agree... that's basically been my train of thought & was going to be my initial approach (if I ever get around to it).
If anyone can pull it off.... it'd be Altashot lol

mh made a decoder for the master speed dial padlock, it may be helpful to carefully read the article and study his tool before starting this crazy project. You can find his article under "Other publications" at the bottom of this page http://toool.nl

Cheers

I've seen MH's device, I think it's the way to go...
Gonna try to design my own low tech version.

M.

not to change subject , do you have to go back to 0 when changing, the como ??

When changing the combo, no. But it is not a bad idea to turn it back 4 or 5 numbers, just like a combo safe lock.

Enter the known combo, open the shackle, screw in the screw that keeps the change key cover in place (or blocks the shackle open if screwed down). Remove the change key cover. Re-enter the combination using the change index. Insert the change key, turn 45 degrees. Enter the new combination. Remove the change key. At this point, I do not yet close the shackle or install the change key cover. I enter the new combination to the change index, then look through the keyhole for the change key. If the holes all line up, then I know that the combo is probably correct. Back out the screw so the shackle can be closed, leaving the change key cover off. Close the shackle. Try the new combination at the opening index. If it opens, great! Install the change key cover, and you are done. If it does not open, CRAP!!! At least you have the back cover off so you can recover the combination.

Gordon

Thanks GW,I'll let ya know how it goes later tonight.