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Help me find evidence to support the use of hook and loop
Hey teams,
So the long discussion is still going on in our shop about the use of Hook and Loop as an aid for climbing. We are split in the shop, Meow can you help me find evidence to support the use of hook and loop sewn into a 1" tie down strap and use it for our climber. I try to tell them, its up to the inspectors and if they don't approve then they need to have evidence to support it, and articulate it. They need a little help. Thanks for your help, this will help us more forward with designs. Have a mice day. ::rtm:: -Michael |
Re: Help me find evidence to support the use of hook and loop
https://frc-qa.firstinspires.org/qa/answered?query=hook
https://frc-qa.firstinspires.org/qa/answered?query=sew Q&A search is much easier this year than in the past. |
Re: Help me find evidence to support the use of hook and loop
I04 part D:
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Re: Help me find evidence to support the use of hook and loop
I think the rub of the matter depends critically on how velcro is actually constructed - does anyone know whether or not loop-side velcro meets the requirements of "entirely of flexible, non-metallic fibers sewn, twisted, tied, woven, or braided together?" I don't have any on hand, and looking at close-ups on google images is unenlightening.
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At worst, the rule allows velcro to only those teams that can somehow manage to manufacture their own velcro. I understand the GDC's desire not to provide input on certain mechanisms, but there comes a point where in the interest of fairness they must do so. |
Re: Help me find evidence to support the use of hook and loop
How about this for the Loop side:
knitted loop material http://www.rehabmart.com/product/vel...loop-7945.html Anyone go down to a local fabric store and ask what fabric is easily caught by the Velcro hooks? "Our problem with Velcro is that its hooks easily grab onto articles of clothing that they were NOT intended for - especially, for example, knit fabrics used for nordic ski suits, and cycling kits. When the hooks brush against the synthetic fibers of polyester, they agitate and pull at them. Even very slight contact with Velcro causes yarn breakage or what we call fabric picking - a process that results in fiber ends that have pulled away from the fabric surface. Ouch!" |
Re: Help me find evidence to support the use of hook and loop
Have you tested whether you actually need to add that extra "loopiness" or "hookiness" to the rope side of things? We've been quite surprised at what one can accomplish just on the roller side...
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Re: Help me find evidence to support the use of hook and loop
Please read the rule and the Q&A a bit more closely.
For instance, the only items at the last 4 inches can be those used to "whip" the end of the rope to prevent fraying. |
Re: Help me find evidence to support the use of hook and loop
http://www.industrialwebbing.com/tem...and_Sew-on.pdf
Looks like by Velcro's own definition, their hook and loop meets the requirements. They say its woven nylon fibers... I will be printing out this brochure and bringing it to competition to prove validity. I hope week 1 teams do the same so they don't set a precedence for illegal hook and loop. |
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There are lots of products where it's probably nearly impossible to ascertain the legality under the current ruling, as well. |
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I would expect to find legal velcro at fabric/sewing stores, and possibly at home stores, and illegal velcro certainly in both. |
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