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New Milestone in Kitesports Safety: ISO Standard 21853 on Quick-Release Systems

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sq225917
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Re: New Milestone in Kitesports Safety: ISO Standard 21853 on Quick-Release Systems

Postby sq225917 » Sun Apr 19, 2020 9:21 pm

Can you publish the full ISO testing specification DK?

I think since we mostly moved to pivoting, none-line-of-load releases like the North solution that max release tension is down to materials interface, parts precsion and plastic deformation. Pull from the kite isn't the factor it was.

I'm all for better, safer, the self aggradising tone of the Press Release isn't what we need in the safety segment of the market. But hey, it's what we've all come to expect from the GKA.
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Re: New Milestone in Kitesports Safety: ISO Standard 21853 on Quick-Release Systems

Postby decay » Mon Apr 20, 2020 1:42 am


Can you publish the full ISO testing specification DK?
Hi Simon,

Copyright for all ISO standards is solely owned by ISO, I can't legally publish/supply a copy of ISO21853 to anyone.

However it is available to purchase for a small fee from ISO here:

https://www.iso.org/standard/71983.html

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Re: New Milestone in Kitesports Safety: ISO Standard 21853 on Quick-Release Systems

Postby alford » Mon Apr 20, 2020 2:30 am

sq225917 wrote:
Sun Apr 19, 2020 9:21 pm
Can you publish the full ISO testing specification DK?

I think since we mostly moved to pivoting, none-line-of-load releases like the North solution that max release tension is down to materials interface, parts precsion and plastic deformation. Pull from the kite isn't the factor it was.

I'm all for better, safer, the self aggradising tone of the Press Release isn't what we need in the safety segment of the market. But hey, it's what we've all come to expect from the GKA.
I've read this a few times, no idea what you are talking about.

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Re: New Milestone in Kitesports Safety: ISO Standard 21853 on Quick-Release Systems

Postby mede » Thu Apr 23, 2020 12:15 pm

decay wrote:
Thu Apr 09, 2020 8:03 pm
sq225917 wrote:
Thu Apr 09, 2020 6:29 pm
Until someone has run back to back tests on the same units under both regimes its impossible to say if they are comparible or not.
I personally have, hundreds of tests on both setups using a vast range of QRs.

I designed, built and qualified the system the standard is based on.

Cheers

DK
Is this one of the factors why the Airush IQR is so great? Did this testing experience flow into the design of the IQR (Disclaimer: I switched to this system this year despite not flying an Airush Kite)

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Re: New Milestone in Kitesports Safety: ISO Standard 21853 on Quick-Release Systems

Postby decay » Thu Apr 23, 2020 12:41 pm

mede wrote:
Thu Apr 23, 2020 12:15 pm
decay wrote:
Thu Apr 09, 2020 8:03 pm
sq225917 wrote:
Thu Apr 09, 2020 6:29 pm
Until someone has run back to back tests on the same units under both regimes its impossible to say if they are comparible or not.
I personally have, hundreds of tests on both setups using a vast range of QRs.

I designed, built and qualified the system the standard is based on.

Cheers

DK
Is this one of the factors why the Airush IQR is so great? Did this testing experience flow into the design of the IQR (Disclaimer: I switched to this system this year despite not flying an Airush Kite)
Hi Mede,

Thank you for your kind words - I'm very proud of my work on both the iQR and ISO21853 and as you have guessed both projects are related.

A few years back I was contracted by Airush to look into their whole control system program and as part of that review ended up proposing to develop a new quick release to replace the Brain 3.0.

The ISO21853 standard was also in development at this same time and since this was likely to have an impact on the design of any new QR's I also ended up drawn into the standards technical committee.

For sure having the first ISO21853 test jig in my lab was handy when it came time to test iQR prototypes.

You can see this the iQR on this jig in this video:



Cheers

DK
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Re: New Milestone in Kitesports Safety: ISO Standard 21853 on Quick-Release Systems

Postby mede » Thu Apr 23, 2020 8:08 pm

Yeah, the IQR works amazingly well indeed.
And it's great to see a QR that is built from the ground upto work with a sliding rope spreader, and not awkwardly retrofitted for the purpose.
Again : very well done.

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Re: New Milestone in Kitesports Safety: ISO Standard 21853 on Quick-Release Systems

Postby Baptiste_FR » Tue May 19, 2020 9:39 pm

Some more information about this ISO standard, but it's in French (from the french kite federation). The technical part is at the end with the force and weight tested.
You can download a short pdf here:
https://kite.ffvl.fr/sites/kite.ffvl.fr ... %C3%A9.pdf


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