How Strong are Twisted Ratchet Straps?

Publicerades den 25 apr 2021
I'm testing the myth that a twisted ratchet strap loses 50 percent of its load capacity by putting a twist in it. So I build a test rig to find out the truth. I test everything from 1 twist to 10 twists. I even test knots and water soaked straps. Exploding them produced some pretty shocking results!

Kommentarer

  • That red vise at 3:00 is gorgeous! What is the make?

    • Real men don't use the word gorgeous

    • How old is that machine on the right next to red vise?

    • @Trey Kernea Ha Ha

    • senewss.info/slow/nKjWntpzZsrHe9Q/video

    • @Fireball Tool can you ship to canada?

  • These are very good straps. The model appears to be from Harbor Freight. I have a bunch of them. Interestingly, they broke at right around their rated strength. I'll be making sure there are no knots. Thanks, this is a great video.

  • Yeah, let's put the "Strap-on" and break something... 😜😎 K-9 0Ut...

  • As a retired science teacher, I'd give you an A+++ for your experiment. One variable, all the rest controlled. You are a true scientist! I subscribed!

  • You're not supposed to tighten the ratchets that much.

  • Damn, This was a great video. THANKS!

  • Are the wheels on your welding cart, road wheels from a tank?

  • My mechanical engineering classes have always shown me to trust the numbers. The only thing i would have done differently is multiple test per configuration but for the average DIYer this served the purpose. The fact that on all but the 'knot' test the strap broke at the ratchet but i'm sure the manufacture knew this and is comfortable with it. Also good to see that the stated strength was accurate. I was expecting it to be overstated but due to these being used on DOT loads the manufactures would not want a lawsuit. Very informative and interesting to watch.

  • Not many people have common sense with these things though, a twist would reduce the effectiveness of a strap, but you don't need to worry too much if your loads are light, like putting a boxed tv in the back of your pickup. Even untwisted straps lose a lot of their load rating simply by using them in the first place. I worked in transport for a while and you just need to use common sense and get trained in load restraint if you need to. If a load weighs 2500kg, using 1 strap rated at 2500kg is not going to hold the load.

  • One thing is missing from the test, the wind flap factor.

  • Did they come with a warranty since they never made 10K ?

  • i think it would make it stronger deffo not weaker

  • Must be Canadian straps

  • Shame! All the millions of boomera saying a twist is 50% less, stoopid boomers make too much noise. I've tied down tight loads with twists and the straps last forever.

  • What is the ballistic strength of that plate steel?

  • You should recreate this test driving 70mph down the road. I bet with wind vibration reduces the strength of the strap

  • Thank You. Very practical and useful. Can we now do ratcheting chain tie-downs vs the arm-breaking types?

  • FireBall, Thanks for your demonstrations. The heat generated in the tight straps, reminds me of the time I was on a ship trying to dock at Adak, AK (we called it the “birthplace of the winds”). We had one tug pushing us and about 300 feet of hawser pulling us stretched between a bollard on the dock and a with the other end looped around a capstan on our ship. But it wasn’t enough - the wind was winning. The hawser was stretched so tight that it was completely out of the water and *steaming*. For fear of it breaking, the deck crew were hesitant to go near it, and the first mate, himself, had to come down and throw it off. In your tests, if you were to have raised the tension very slowly so that it had time to stay cool, would the breaking tension have been higher? To what extent was the temperature the cause of or the result of the breaking?

  • I don't know why this showed up in my recommended, but I'm glad I watched it. I had a co-worker who used to insist that having a twist in the ratchet straps greatly decreases its load capacity. I never felt like arguing with him even though the one year of engineering I took back in university was enough for me to question his wisdom. Unfortunately, that co-worker has since moved on to another job so I can't show him this unless I want to be really petty and share it on his Facebook.

  • Great test. (Nice toys, too.)

  • How about an old sun beat strap

  • Have not seen the test. But i dont believe the strap will be more than 1 percent weaker. I will see.

  • Looks like the slot the strap feeds through compresses under the pressure which shears the strap

  • So um... does warranty cover this?

  • Awesome video and it shows by the views. How about a long term test using the same rig showing what weather and sunlight does to the straps performance.

  • Ah so that's how you get a knot out of a strap.

  • Now get 2 year old used straps and test them and see if their values remain the same

  • Call me crazy but, I was wondering if the ratchet part might fail.

  • The reason twisting a strap causes it to not vibrate is because of the fact that the twist causes air to not just go across the strap, but to travel up and down it's length as well. Straps, like flags, will be subjected to a phenomenon called wake vortex shedding. As the air goes around the strap it creates a wake. As this wake passes it, it creates a vortex. These vortices alternate back and fourth due to pressure differences on the strap's sides, and thus impart an alternating pressure on the strap that causes it to vibrate at it's resonant frequency. Twisting it separates these overlapping vortices from each other and thus eliminates the flapping. These vortices are why flags flap, and why fish swim in the wake of stones in a river to conserve energy - they're surfing on these vortices to propel themselves against the current with minimal effort. You might also see smokestacks with twists on them - those do exactly the same thing as twisting the strap, and prevent the stacks from oscillating.

  • is it just me or did anyone else get serious naruto battle music vibes off that intro music

  • Wow what a great video! These keyboard wizards sitting and disliking have not spent a dime to test these straps but still run their mouth! Nice shop! I subscribed!

  • Do you have a reason why the straps always break at the ratchet?

  • The thumbnail looked like how I tried to play halflife alyx

  • Interesring

  • Can you soak one in liquid nitrogen and then tested

  • I’ve never heard this myth. As an air assault load master, we never put twists in any of the tie downs. Having said that, some people use the twists to counteract the loud vibration noise caused by the wind at high speeds.

  • Can you do one using the free rope from the Home Depot exits? Thanks, 🤘

  • Awesome post. Thank you.

  • One twist is all I use in my 4in straps on my flatbed been doing in on high loads ever since I started trucking..those idiots leaving you comments saying it reduces strength have no clue what they're talking about and have never hauled shit. Putting one twist in the strap reduces vibration which means it won't loosen up 👍🏻

  • thanks for doing the research and dispalying the numbers the whole time, humans are terrible at remembering numbers

  • I bet if you had a way to induce the vibration that not twisting the strap causes you would see a reduction in strength over time.

  • I love your shop

  • I want 1 those cameras

  • Follow up test. Two new straps on the same load. Twist one, leave the other flat and take on a trip. Then load test them both, see what the vibration did to the strength of the strap over the course of time

  • Who are the 2.3k idiots who did not like this video? You did a great job. Thank you very much. And I also put twist in my straps to avoid vibration.

  • Thank you for your time testing 😎

  • Put the strap on and break something, that's what she said!

  • Thanks for the video. After all the breaks occurring in almost the exact same spot. I wonder what the results would be if you move the ratchet and the meter to the opposite side. I wonder if they would continue to break on the racket side, indicating maybe a difference in the angle. Or if they would still break on the left side of the table indicating Maybe the Jack was slightly off-kilter. Any thoughts?

  • Thank you. Water Knot not a good plan to shorten straps. This may have saved my life.

  • Only use these kind of straps on the farm to hold things in place when moving. Learned right away they don't pull a lot of weight. lol. From amazon car hop trays.

  • I don't have an opinion either way but I noticed at your introduction you were talking about shock forces and than you tested constant forces. I'd like to see a similar test with something more instantaneous. Ramset maybe?

  • I would like to see you some straps in fuel, oils, and various chemicals and show the results.

  • Well planned, prepared and executed series of experiments using professionally set up hardware. Impressive!

  • Nice testing. Useful info to know.

  • Should have done one twist with a wet strap.

  • Interesting to see old vs new strap performance and see how they degrade with time as an indicator for how frequently to replace them.

  • That’s was fantastic

  • Super useful! Thanks!

  • I also do one twist but my straps always break haling engine blocks I leave with 8 straps and come back with shredded cheese

    • Don't you put packing under the straps or use strap sleeves to protect your straps?

  • I feel like that is a flip and not a twist. Im curious to know if twisting from the end would yield a different result. Do you think running the strap through the ratchet in the opposite direction would affect the common fail point at the ratchet

  • Hey nice video! The knot failure got me thinking. A lot of people tighten the long lose ends back on the straps. Sometimes so tight so they are absolutely sure it won’t come lose while driving. I wonder if there would be a significant loss of strength duo to that. Could you test that out maybe?

  • That whole shop 😍

  • Can you do a test with a non-twisted strap vs. a twisted strap after they both have gone through the same stress of wind vibrations?

  • I would be interested in some further testing or additional resources if anybody has any. What happens if the twist gets rolled up in the ratchet, or if the strap gets loaded dynamically (shock loaded)? Great video, keep up the good work :)

  • However, 1 twist... which is what I've always put, the 45 years I've been driving... even had a little Higher breaking point. So. 1 twist is fine. And it Saves the strap from unnecessary Wear from wind vibration. And, Ya... I Never put a strap on with a knot. GREAT Test... Thank You Very Much:~)

  • Once again, all the keyboard warriors are shut down because they are talking out of their ass.

  • you sir, more than earned this sub

  • I don’t even know why people would think this in the first place. The ratchet itself is the fail point

  • thank you for the information

  • OKAY SEnewss I'LL WATCH IT, LEAVE ME ALONE ALREADY

  • Tips to remove knots in the tow strap? Goober tow truck guy added a knot to my strap and wonder after seeing this if there is a way to undo

  • First time watching this channel and I must say it is so HIGH quality.

  • A twist is just to stop vibration .nothing to do with strength . anyone worth anything would way over strap. going down a highway and seeing a tie down vibrations ,is a rookie mistake!

  • one twist is key, no vibration and if it does vibrate you can see that your strap is loose and you need to check your load

  • Thank you fireball tools

  • It's been a week .. 5.7 mil views.

  • What happens if you put a knot in a strap but don't load up to breaking point and then remove the knot. seems he could only ratchet up tight to about 20% of breaking, so i wouldn't think it had not been damaged that much. probably way stronger still then the working load. would be great to test this

  • Great test! With regard to what happened with the knot, when I was a volunteer with mountain / cliff rescue 20-30 years ago, we were taught to never let nylon ropes cross themselves, other ropes, or sharp edges. Our instructor used to use up short lengths of old climbing ropes by demonstrating dropping a couple of roped-together sandbags off the training cliff. Properly terminated, even old ropes held up pretty well, but put a knot in them and they'd go bang in a heartbeat. As the instructor used to say "don't let that be YOUR last heartbeat."

  • Nice. But leave one on the trailer a few months and the UV will waken them also. Not sure by how much but that would make a good test.

  • This video shows that all of you who said not to twist your strap don’t know shit and probably shouldn’t be towing anything.

  • Thanks for a good and informative video. Next time somebody harps on me about putting one truest and a strap, I'll let him know there's nothing to worry about!

  • Sheer speed from a wreck and G forces could make this test useless, drop 3,000 pounds from 50 feet with twist and without, see how it turns out. It was still interesting to see the test, we put alot of faith in China made products, well some of us do, it's not the nylon that I worry about, as much as the crappy metal and ratcheting failure. There a dime a dozen now, watch out!

  • I have never used ratchet straps before in my life yet somehow I'm watching a nearly 14 minute video about them... Good job my dude.

  • I find it interesting, no matter how may twists,.. They break at the same place on the binder,..not at any certain twist. Twisting does not weaken the strap,.. at the twists ?????? As shown shown with the break at the knot ,...not at the binder !!! But,..of course,... this whole experiment should be dismissed and the results are in error,.... - Because the strap was "" Pre-Loaded "" with tension in the Key of B♭ (B-flat). ,....At 4:36 " Shut Up "

  • Looks like the frictional heat generated at the buckle is causing the failures, other than the knot.

  • There are always people commenting that have no idea what they're talking about

  • Stop lying

  • Being a retired truck driver who has hauled many loads on a flatbed, I'm going to say that there are probably not that many truck drivers who don't put a twist or two in their straps. We are not going to listen to any extra noise that we don't have to. The trucks are loud enough.

  • Thanks for the video! Can you test at different temperatures? We do lifting works at - 10C degrees up to +40C, pretty big range, I wonder how do straps behave.

  • Do different conditions; knots, twists, dampness, etc. affect how much they stretch under load?

  • Lmao says tack welds and leaves inch and a qtr welds on it

  • can you try like an old faded strap? just to see the reduction in lbs

  • Awesome test. Love seeing things pushed to their limits. Also it looks like most broke close to the edge of the split bolt or drum of the ratchet. But I totally enjoyed the video.

  • YOU’RE PINCHING IT INFINITELY TIGHT

  • Next time if u were to test smt like that and u are afraid of things faying away pls put aditional strap or rope at least to metal parts, it can be lose but if things went flying they ll hold them on safe spot and not making any damege to ppl, equipment or even structures.

  • Pretty "Decent" looking welding!

  • do knot tie your strap around itself, got it!

  • Inspect every 25 miles?????????

    • Why? Inspect after 5 to 15 mins.The straps will stretch in that time. Tighten where needed. When you need to stop do a walk around and check the load.

  • This guy is great! He proves how much people talk out of their asses on youtube !!! Kinda reminds me of a lotta commenters about car repair and show how ta do MODS and so on... I always think to myself... "How does a 16 year old kid or someone sitting on a couch on youtube or some goofy assed forum know more than what an auto manufacturer with billions of dollars devoted to R&D with legit Engineers knows about what to NOT or DO with their product...?" Makes me laugh !!! This is what I say.... "Lets face it... Opinions are like assholes, everyones got one and most of em STINK !!" I know these are mere ratchet straps but with cars and such I think to myself....When the dashboard, wheels,car,truck get covered with carbon fiber,plasti dip,MODS,K&N filters, diesel stacks cut through pickup beds (we've all seen those !) You just turned your shit to junk !!!

  • I was hoping for a “ that’s knot good”