Sooner or later, any more or less complex thing for various reasons fails and refuses to work, requiring cleaning, lubrication, and even repair. Moreover, this usually happens quite unexpectedly and not in suitable conditions for this. The Primus Express Spider gas burner refused to work at the most inopportune moment on the morning of the second day of a three-day hike.
Cleaning and maintenance of the Primus Express Spider gas burner in the field, why do we need a cable in the gas supply pipe on the burner, overview.
The cause of the gas burner failure was immediately determined by the lack of gas supply from the cylinder to the burner comfort. It is necessary to clean, and only Leatherman Wave multitool is available from the tool. It was here that I had to evaluate the correctness of the saying Eyes are afraid, and hands do. We must pay tribute to the designers of Primus, the Express Spider burner was completely repairable in the field with a minimum of tools and was disassembled in a few minutes.
No delicate gaskets, just a few simple threaded connections. In addition, it turned out that there was a steel cable inside the pipe for heating the gas mixture.
The cause of the breakdown was in the nozzle, its outlet was clogged with soot. Using the Leatherman Wave multitool clock screwdriver, the deposit was cleaned and, after assembly, the Primus Express Spider burner again pleased us with its loud buzz, heating the water for tea.
Why do I need a cable in the gas supply tube on a Primus Express Spider gas burner.
The functionality of the Primus Express Spider gas burner has been restored, but the question remains: why do we need a cable inside the pipe to heat the gas? Is it really just for the simplicity of cleaning it? It is unlikely that this is how it will have to become clogged and how to take this cable to clean?
To dispel our doubts, we turned to the Vertical Equipment Center with the following question: Why do they think they need a cable and do other manufacturers do this in the design of their burners, and if so, who exactly ?. The answer was not long in coming, here it is.
To get the answer to the question asked, the following burners with heated mixture were dismantled.
1. Tramp. No cables found.
2. Kovea. No cables found.
3. MSR. All connections are rolled and not subject to unwinding. But their pipes are thin. It is unlikely that something will fit there.
4. Fire-Maple. No cables found.
5. Primus. Disassembled two more models. Ropes are available.
Our opinion is that the cable embedded in the nozzle is still not for cleaning, but for greater heat capacity. The cable cools much longer than the brass pipe. And even in frost or wind it will always be hot, being hidden inside the nozzle.
P.S. And for ourselves, we made the following conclusion is not a secret that Primus gas burners are somewhat more expensive compared to similar products of other companies, but for the rationality, thoughtfulness and creative approach to the design of our burners, we are quite ready to come to terms with this.