Attempting manipulation of a S&G 6642-001

[femurat]

Well, generally speaking, 4 hours aren't bad. I know you're aiming at half of that time, but let me congratulate with you anyway. It was a difficult and demotivating manipulation, but you kept up and finally won. And more important, we all learnt something in the process.

Cheers

[MartinHewitt]

Thanks, femurat, for your kind and true words! Let's see how the next manipulation will be.

And btw. it is just a Group 2 lock.

And btw. the new S&G website has information less accessible and is also wrong or at least misleading. The 6630 is indeed a Group 2M lock. On the top of http://www.sargentandgreenleaf.com/prod ... 30-series/ is written "GROUP 2 MECHANICAL SAFE LOCK" and near the bottom "Tested against expert manipulation for 20 man-hours."

PS: I will now map all false gates precisely to update the cheat sheet.

[MartinHewitt]

From my mapping the false gate data I had was good enough. 0-27-53-83 instead of 0-28-52-84 and 0-20-37-46-69-90 instead of 0-19-37-47-69-90. I don't think it is necessary to change my template for this difference.

Any additional wheel/lock info? Is the 6651 always in 2-fg / 5-fg / 2-fg configuration?

[MartinHewitt]

I think my 6642 is showing this slop behavior. Wanted to identify the wheel at 92.5 which I got with a scan of R/R/L65. L100/R92.5/L65 made the indication jump up, i.e. indicating that it was indeed wheel 1 where the gate was. R100/R92.5/L65 did not modify the indication, i.e. hinting that it was wheel 2 with the gate at 92.5. And from further dialing it was indeed wheel 2. Also the look of L/L/L and R/R/L65 was quite different. The second scan was partly higher than the first scan even so there the biggest wheel was optimized.

The lock is not yet open and I haven't added my working time so far, but I believe I will be below four hours. Not sure by how much. Tried first something Oldfast suggested here the last days: Quick scan for a low point, than scan w3 with w1&w2 at the low point. This was a waste of time on this lock. There was no significant valley visible. Continued then with a full AWL. This showed a narrow low point at 0 which I believe not to be a gate. The graph of the right contact point is without much variation unlike with my 6730. The left contact point is even flatter, so that I stopped graphing it after some time.

[MartinHewitt]

Open in 109 minutes! 24 minutes for the (rather slow) quick scan attempt, 85 minutes then for the real opening.

Real opening by just reading the right contact point was:
1) AWL. This showed a low area at 0.
2) L0L0L scan. This showed a clear gate at 65. (?/?/65)
3) RRL65 scan. This showed a clear gate at 92 which was identified to be at wheel 2. (?/92/65)
4) R92R92L scan. This showed two clear gates and some indications. From the false gate position chart the clear gate at 37 could be identified as true gate. (?/92/37)
5) LR92L37 scan. Very best gate shown at 58 which matched with some clear and minor gate indications as the true gate on the false gate position chart, but it did not open. (58/92/37)
6) Because w2 with was the least certain and most easily tested (due to even spacing of true and false gates) wheel I tried there the other two possible positions. 92-33=59 and 92-67=25. I tested first 25 because with 58/59/37 there would have been a good chance that the look would have been open already and indeed 58/25/37 opened the lock.

I will then look into the 6630.