Many of you have inquired about our destructive testing session from last week. Our product development process includes the testing of several design prototypes and small design iterations before we release a product to the public. One of our test challenges is to devise a method to attach to our products so that we can pull a load that does not break the attachment hardware and allows us to gather the Factor 55 product data instead. We prefer to use USA Crosby shackles and in some cases, the ultra strong shackles made by Skookum (9 ton WLL on a ¾ shackle – 5X Safety). In other cases where our FEA results have predicted breaking strengths of less than 30,000 pounds, we can use soft shackles like the ones from Bubba Rope. The pic below shows the type of hardware we need to gather prior to the test session. So what did we test last week?
1) Material yield and breaking test of the Rev. B UltraHook XTV (Hook Opening)
2) Material yield and breaking test of the Rev. B Ultrahook XTV (Closed System Shackle Pin Mount)
3) Material yield and breaking test of the Rev. B ProLink Expert
4) (22”) 3/8 Dyneema long bury splice soft eye – taper against blunt end test (No lock stitching)
5) (22”) 3/8 Dyneema long bury splice soft eye – tapered at both ends (No lock stitching)
6) 3/8 Dyneema knot test – Simple overhand loop knot
7) 3/8 Dyneema knot test – Bowline
Note that proof load yield testing can be in increments as low as 3000 pounds, so an enormous amount of test data is generated from these pull tests. We simply want to disseminate and summarize the data in the most useful form for you guys. Look for this test data and videos in the coming weeks. Designed, Engineered and Made in the USA.
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ON THE WHITEBOARD today are some samples of partially spliced synthetic ropes using our Fast Fid tool. Some of you have asked what rope diameters our tool can splice. These Samson Rope samples vary from the common 3/8 winch rope diameter, to the much larger 5/8 diameter. All three of these diameters can be spliced easily with the Fast Fid tool. It is no longer necessary to carry multiple Fid tools for these different rope diameters. Need to splice even larger rope diameters like 2 inch diameter ship mooring lines? Stay tuned, we are working on those tools now.
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8 NEW PRODUCT AWARDS at the 50th Anniversary of The SEMA Show. Thank you everyone for your support! All new products will be released very soon. Stay tuned for updates. So much more to come in 2017!
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Any Jeep Gladiator fans out there? This incredible build is from our friends at American Vintage 4×4 here in Idaho. Kevin built this as a multipurpose rig – Rockcrawler, Expedition, Adventure rig. He just finished taking it through the Rubicon, drove it there and back too! USA Made Jeep, USA Made Crosby Shackles, USA Made Factor 55.
Have an adventurous Labor Day weekend!
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Think tying a knot to repair your broken synthetic winch rope is a good idea? Think again. Different types of knots subject the rope fibers to different levels of bending stresses, with some knots subjecting the rope fibers to severe bending (Bowline knot). HMPE is a slippery fiber and does not lend itself well to knot tying. Look at the chart from Marlow Ropes that displays the percentage of strength reduction resulting from different knot types. The left column represents the common SK75 unsheathed winch rope that most of us off-roaders use, the right is a sheathed rope from Marlow. “BEND” represents the knots that join two ropes, where “LOOP” refers to tying a loop on the end of your rope. You can lose up to 65% of your rope strength from tying the wrong knot (Bowline). Even the best knot (Double Fisherman’s Knot) retains only 39% of the rope strength. What’s the best way to field repair your broken winch rope? Splice it, it’s not that difficult to learn and coming soon it will be even easier.
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