Rope and bungee are two of those everyday items that most of us never give a second thought to.
Here are 10 things you should know about that rope and bungee you have hanging around in the garage.
1) Knotting Reduces a Rope’s Strength by 50%.
Need to knot a rope or cord? Keep in mind that adding a knot to your line reduces it’s strength by about 50%.
2) All Bungee is Not Created Equal
Chances are that bungee you bought at the hardware store or online was made overseas using rubber seconds. What are rubber seconds? Used rubber is chopped up and reformed into strands and pieces, then used for the inside of bungee. Most bungee is manufactured using rubber seconds. Like anything, rubber seconds don’t come close to equaling first quality. At Quality Nylon Rope we use only first quality rubber in our bungee. Always have, always will.
3) Use it For the Application it’s Manufactured for.
Always…always…always use your rope for what it’s intended to be used for. Read the website you purchase from carefully for any notes and disclaimers regarding the rope you purchase. For instance, Quality Nylon Rope has such a disclaimer on each page that reads:
NOT to be used for any kind of personal safety or critical application.
There are companies who manufacture rope and bungee just for critical applications and situations where personal safety are involved. You should always make sure you purchase the right type of rope for whatever it is you want or need, to do.
4) There are Many Different Styles of Rope.
Rope comes in lots of styles. The most common, and what you’ll normally find in the hardware store, is 3 strand twisted. Other common types of rope are solid braid, double braid and diamond braid.
5) UV Rays Wreak Havoc on Rope
UV rays are very damaging to rope and in those situations when you don’t need to leave it outside, it’s always recommended that you bring it in out of the damaging UV rays.
6) Color affects break strength
Did you know that natural/white rope has a higher break strength than a comparable colored rope?
7) Working Load vs Break Strength
A quick way to get a general idea of a rope’s working load when you have the information on it’s break strength is to reduce the break strength by 90%, leaving you with a general idea of the working load at 10% of the break strength. This quick calculation is not intended to take the place of genuine calculations regarding a rope’s working load. Many factors go into determining the true working load of any rope and this general calculation is not intended to be a substitute for that.
8) Synthetic vs Natural Fiber Rope
Up until about 60 years ago, your only choice for ropes were those made of natural fibers such as sisal and jute. Rope made of natural fiber is inferior in most ways to the synthetic fibers such as nylon and polypropylene, which are prevalent now. One way natural fibers are better is their grip-ability since synthetic ropes tend to be slippery. Another advantage for those who are environmentally conscious is that natural fibers are bio-degradable, while synthetic fibers are not.
9) Dirty Rope
Most people think of abrasion as occurring when the rope is pulled back and forth against something. While this is one kind of abrasion, another type of abrasion that’s often overlooked is the kind that occurs when your rope gets contaminated with dirt and grime. Once these particles get into your rope they cause abrasion inside by rubbing against the individual fibers. This reduces the life of your rope so keep your rope as clean as possible.
10) Virtually No Stretch
Sometimes, the only suitable rope for a job is a rope with no stretch. Antennas and other guy lines are examples of situations where the rope must be no stretch. Another complication is that normally these applications are outside, so the rope must also resist the outside elements. An excellent choice in this instance is a Kevlar® Polyester rope. The polyester is used to jacket the outside while strands of Kevlar® or another aramid are inside reducing the stretch of the rope to virtually nothing.
Quality Nylon Rope has several sizes of no stretch Kevlar rope at very reasonable prices.
We welcome any comments or questions you have on anything mentioned here.
Please email us at firstname.lastname@example.org and we’ll be delighted to respond.