Rolling hitch

The Stopperstek is a terminal node, with a thinner line is connected to a thicker rope, a cable or chain. It can also be used when the cable is under tension. It runs under load and loosens when released again and can be moved.

Name and history

The Stopperstek is common especially maritime. There are two variants in Ashley, Big Book of nodes labeled with the numbers 1734 and 1735. Both Stopperstek be called.

Application

With the Stopperstek an auxiliary line can be tied to a rope under tension, to relieve this with a winch or a pulley. This is for example the case when a sheet by the wind on the sail is stretched and on the winch jammed ( a " defector " forms ) or when a case the cable terminal is blocked.

On ships that are not equipped with winches, such Arbeitstalje is sometimes necessary to trim a sail correctly.

Because the Stopperstek moved easily, so that a load with a winch or a pulley meters can be fetched by meter with an auxiliary line, for example, a heavy hanging on a rope weight, or a heavy or " swept out " anchor chain. In a cable-stayed bridge carrying the rope can thus be tensioned before it is firmly bonded to the second anchor.

This also allows a ship to be towed. The tractor passes to a towrope. And the ship, which will be towed, binds its own leash with the Stopperstek to the towrope.

Knot strength

The knot strength is highly dependent on the difference in cable diameter and the material and surface properties of the two ropes. Is fixed, the node with a difference of diameter of 1 to 1.5 to 1: 5; However, the greater the difference, the weaker is the thin line. Only through a smaller wire diameter, with which the node and the stationary cable is attached, a good clamp ( wedge) enters effect. The node No. 1735 is stronger than the node 1734, but can move worse. The more turns are made ​​on the tension, the higher the knot strength.

Tie

The Stopperstek is basically a Webeleinenstek, on the side to the tensile direction ( the side to which it can be moved in the unloaded state ) has two turns ( instead of just one as in the ratlines ), for a total of three turns ( instead of two as in the ratlines ). All three windings have the same direction of rotation.

Second turn

Third turn

Third turn with slip

The node can also be linked with train. Already the first turn brings a lot of friction and keeps some train. This means that more friction is generated, one makes a second turn. And so you do not always need to hold the end, you do with it on the other side of the third turn (half beat) to the hawser. The pulling direction should be directed to the line to the first two turns is pulled.

In heavy train or a smooth surface of the hawser, the number of turns can be increased.

Ashley No 1735

The second variant, in which the second turn is above the First and oppresses them is preferably used in order to fix a rope to another. This is even more friction generated. The node can be characterized but are less readily move.

Alternatives

• When directed perpendicular to the hawser or small train of Webeleinenstek enough.
• If the line has taken twice or knotted to form a loop, the Prusik knot is.

Modifications

• Leaving the second turn off, gives the Webeleinenstek.
• If one makes the third and another fourth turn in the opposite direction of rotation, gives the Prusik knot.
• Linked to the Stopperstek to the same line, the result is the Topsegelschotstek and forms an adjustable, not tightening loop.
• Back to top extended to two turns and once plugged back gives the Hitch # 1740 ( in abok at this number, but no name specified)