Lockpicks and rolls, breaking of Cisa Elbor locks Mottura KerberosClass using a roll, metal doors

Now I will tell you about the methods of unlocking lever locks with the help of a 'roll-up'. Convolution (thieves' slang) - a special device for breaking the locking device of the lock in order to move the crossbars to the unlocked position. I already wrote about the rolls for breaking the cylinder mechanism of the lock, and now it's the turn of the lever locks. A huge number of lever locks, both domestic and imported, have appeared on the market. It is very difficult to independently figure out which of the locks is better if you are not an expert in this field. To protect you from thieves and save your money when buying a castle, I am writing these lines. The following locks were tested in laboratory conditions: Cisa-Elbor, Class, Cerber, Mottura, Kerberos, Mettem and Senate. But in order not to load the article with illustrations, I have divided it into two parts. The experiment began with the fact that the turner Uncle Vasya, with the help of a mat and a lathe, in just half an hour and a bottle of vodka, made a twist according to a sketch. Here is he (a swag, not Uncle Vasya). The material from which the roll is made is plain steel St.45. The rod thickness was chosen to be 8 mm. For durability. But if the roll is 'hardened' (heat-strengthened), then the rod can be made thinner, although, looking ahead, tests have shown that its strength is sufficient with a margin. The possession technique is as follows. The key hole is drilled with an 8 mm drill, then a roll is inserted into it and turned with a wrench, if necessary, you can use a lever. In our case, we used a torque wrench to determine at what force the lock was unlocked or broken. The photographs show the sequence of actions. The Cisa-Elbor lock (article 1.06.61) was subjected to the impact of the roll on the bolt shank. With a force of 10 Nm, the deadbolt strut broke at the attachment point. The lock is weakened by the one-sided arrangement of the levers relative to the bolt shank and the fact that the bolt post is welded to the bolt shank. The next three turns are effortless. Lock Class. The picture is similar: with a force of 10 Nm, the bolt post broke at the attachment point (welding) and the lock was unlocked without effort. The disadvantages of the lock are the one-sided arrangement of the levers relative to the bolt shank and the fact that the bolt post is welded to the bolt shank. Mottura lock (article 52.771). With a force of 10 Nm, the bolt shank comb was destroyed due to the 'weakening' holes. The castle remained locked. However, you will have to change the lock to a new one. There is no Mottura service in Russia, no spare parts are sold. Taking into account the size of the Mottura castle, the Ministry of Emergency Situations will turn the entire door in an area of ​​almost half a square meter, which will add almost the same costs to the owner as in the case of an ordinary theft. In general, an effort of 10 Nm is not enough for the reliability of the lock, especially for that kind of money. Kerberos Castle (article 111.11.011). For testing, five locks were taken, of previous modifications and currently being produced. They all behaved with dignity. None of the locks were unlocked by the roll. Although I 'tormented' the castles mercilessly. Initially closed the lock by four turns. With a force of 56 Nm, the extreme tooth of the bolt shank comb bent, see photo mark 1. The lock remained locked. Disassembled the lock. Suvalds practically did not suffer, it can be seen in the photo. The deadbolt post is securely pressed in and not deformed. I decided to check, but what will happen if the lock is closed by two turns of the key? I assembled the lock, inserted the roll, turned it. With a force of 42 Nm, the tooth of the bolt shank comb was deformed, see photo mark 2. The lock remained locked. The advantages of the lock are that the levers are located on both sides of the bolt shank, the bolt post is reliably pressed into the bolt shank and made of heat-strengthened metal. From the tests carried out, it can be seen that only Mottura and Kerberos locks will reliably protect your apartment from a thief with a roll. At the same time, the price of Kerberos is about 15-20 euros, and the cost of Mottura is more than 200 euros. Kerberos castle service in every city of Russia. Mottura is good, but in Italy. Later, when the doors were opened by the rescuers of the Ministry of Emergency Situations and the lock was replaced, the area of ​​damage to the door in the case of the Kerberos lock is almost three times less than the area with the Mottura lock. Accordingly, three times less expenses for repair and replacement. At the same time, Kerberos is clearly (FIVE AND HALF TIMES) superior to Mottura in resistance to comb tooth coagulation (56 Nm for Kerieros, versus 10 Nm for Mottura). To write this article, I was spurred on by a series of burglaries, where the locks were unlocked with the help of a similar curl. The thefts have not been discovered and the thief is still at large. Decide for yourself how to protect yourself from theft, using simple and easily accessible thieves' devices, known from time immemorial to all thieves. In the next article, I will explain the thieves' technique of unlocking lever locks with the help of a roll on examples from real life.