Learning about Cables and Drums

Join SSC as we discuss how cables and drums are used on a garage door counterbalance assembly, the differences between standard lift drums, vertical lift drums, and high lift drums, and the different types of cables available.

[@brianfuller8957]

Typical torsion spring replacement is a 10,000 cycle spring.
For a small upcharge request a 30,000 cycle replacement!
The labor is the same, but 3x the life.
2-3 years after replacement check to see if the springs need a slight adjustment to keep it in like new tension.
As springs age they get weak and the opener works harder, so a recheck and retension extends the opener life.
Oil your springs yearly because rust makes the springs brittle

[@Ckeaton1991]

Do the larger steps on the drum increase or decrease the initial torque when opening a door?

[@servicespringcorp]

The larger steps on the drum increase the torque by increasing the lever arm. So as we step down, we lose torque as we lose tension. Also the bigger the step the farther we can go on (or more cable can wrap on the drum) per one turn of the spring.

[@Ckeaton1991]

@@servicespringcorp Thanks so much.