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Infexion Seatbelt Quick Release

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evan
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Re: Infexion Seatbelt Quick Release

Postby evan » Wed Jun 10, 2020 5:41 am

alford wrote:
Tue Jun 09, 2020 10:11 pm
Aren't we drifting from this very simple rigging concept? Do we really need three rings and a plastic holder?
Lots of foil racers use this setup with a Wichard to the big ring, I don't see why this won't work with the Seatbelt too.
With this setup the ring used for the flagout can get stuck in such way that you can't push the release housing up, rendering the system unable to open. With the D-ring and small ring for the flagout this is not an issue.

The rubber stopper on top is to prevent damage on your bar and to make sure that you can't force the bar too far down as that might also block the release in some cases.

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iriejohn
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Re: Infexion Seatbelt Quick Release

Postby iriejohn » Wed Jun 10, 2020 6:45 am

To prevent bar damage I currently use a drilled through 22mm parrel bead* with a SS grub screw onto a 22mm long PU sleeve over the trim line to hold the bead in position.

* aka rope stopper.

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Re: Infexion Seatbelt Quick Release

Postby Breze » Wed Jun 10, 2020 8:05 am

knotwindy wrote:
Tue Jun 09, 2020 10:51 pm
How often are you folks using your QR? Every session, once a week, once a season?
If it is occasionally only, get a carabiner with a SS ring just like the one that fits in the QR. Hook the ss ring on the biner and hook both to your harness. If/when you release, Grab the biner and hook in the SS ring to the QR, then clip the SS ring hooked to the kite lines onto the biner also. Yes, it will extend the arm reach a bit but get you to shore safely and easily and with no kite pressure hooking in. Also, always good to have a extra carabiner handy for self launch/landing or whatever.
If you’re using the QR all the time this won’t work very well but why are you using the QR so often?
It would be a good idea, if the biner itself would fit into the QR or Ring and biner would be connected with tape, to a solid unit. Otherwise you have the same problem, sticking the ring in a right angle into the QR. With the extra biner -ring it would be without holding the sfl. :thumb:
But you need a twistlock biner, who don`t catches lines when hanging it onto the harness.
And why not a neat solution that gives you the comfort in every day use? :naughty:

I can`t remember my last intended emergency use of the QR on the water. But unintended openings of the QR can happen. In my case one of 10 rides so far. ( Used it 10 times).
Then i often threw the bar through the V in case of an inversion. While sitting on the foilboard waiting for the next puff. This is always hairy, things can go quickly south if you weren`t quick enough to reinstall the QR.
I also do sometimes swimmstarts (or untangling) with the packed foilkite, where at the beginning of the procedur you are disconnected.

Remember: The handling of the QR on(in) the water is always out of sight with a seatharness sitting on the small board. You really need to practise to do it blind. Gloves and waves would make it really difficult.

Faklords solution looks really good :thumb:

evan
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Re: Infexion Seatbelt Quick Release

Postby evan » Wed Jun 10, 2020 8:49 am

Made a video to show how firm the ring is connected on the depower cord the Seatbelt Quick release was designed for:




Have to look into faklords solution to see if that comes close to what I had intended with the system.
faklord wrote:
Tue Jun 09, 2020 8:52 pm

Not sure if this link to the 3D design will work? ... https://a360.co/2XML6Ct

Will see how it goes....
Can view it, but not download the model to test it here.
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Re: Infexion Seatbelt Quick Release

Postby faklord » Wed Jun 10, 2020 11:42 am

Hi Evan.
I’m happy to share a downloadable model but was just going to wait until I had printed one off myself.
As I’m sure you know, it sometimes takes a few iterations to get a design to how you want it....well it does for me

I’m printing one off at the moment.
If you want to jump the gun, you should be able to get at downloadable model here: https://a360.co/2XRxE0d

I’ll report back here when I’ve tried the new part.

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Re: Infexion Seatbelt Quick Release

Postby faklord » Wed Jun 10, 2020 3:38 pm

Ok. It took a 2nd attempt to get the clearance for 5mm dyneema line.
This makes reset a doodle.
I can easily push the ring home without having to pull the release to open the jaws.
56D301AC-1D40-4061-A88B-BC42997E0751.jpeg
A5487F39-505C-4885-B422-43E237A6F4A4.jpeg
1FA4194F-35EF-4162-9E38-296995F12115.jpeg


Downloadable model here. https://a360.co/2ApVRBN

It would probably be even better printed in PU, to make it a bit softer?
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iriejohn
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Re: Infexion Seatbelt Quick Release

Postby iriejohn » Wed Jun 10, 2020 4:50 pm

faklord wrote:
Wed Jun 10, 2020 3:38 pm
Ok. It took a 2nd attempt to get the clearance for 5mm dyneema line.
This makes reset a doodle.
I can easily push the ring home without having to pull the release to open the jaws.

56D301AC-1D40-4061-A88B-BC42997E0751.jpegA5487F39-505C-4885-B422-43E237A6F4A4.jpeg1FA4194F-35EF-4162-9E38-296995F12115.jpeg



Downloadable model here. https://a360.co/2ApVRBN

It would probably be even better printed in PU, to make it a bit softer?
Exactly what is required, nice job. 8)

What size ring are you using, 4mm or 5mm, id 20 or 25? Looks like 4mm x 20mm id ...

Where can I get these ring blocks from, I'll need three of them?

Edit: originally thought it was a 4x25 ring then changed my mind and edited to say 4x20mm ...
Last edited by iriejohn on Wed Jun 10, 2020 8:30 pm, edited 1 time in total.

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Re: Infexion Seatbelt Quick Release

Postby alford » Wed Jun 10, 2020 6:32 pm

Faklord, very nice and really satisfying video to watch!
Do you think your device would work with a single depower line, 5 or 6mm and attached with a larks head to the ring?

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Re: Infexion Seatbelt Quick Release

Postby faklord » Wed Jun 10, 2020 7:16 pm

@ iriejohn.
Thanks. You’ve got a good eye. Yes it’s the 25 x 4mm (approx) ring that I got with the release.
I get the impression that Evan will be producing manufacturing something, if he likes it?
I’m not really into the business of making parts to sell to others but if your really stuck I may be able to help out. I’m happy to share the model and there a plenty of 3d printing houses about that can make a part in the material of your choice....Let’s see what Evan says?

@alford.
Yes that was my intention. Though the spliced loop may have to be quite large to enable it to be threaded through the part and larks headed onto the rings. I’ll give it a go.

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iriejohn
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Re: Infexion Seatbelt Quick Release

Postby iriejohn » Wed Jun 10, 2020 8:35 pm

faklord wrote:
Wed Jun 10, 2020 7:16 pm
@ iriejohn.
Thanks. You’ve got a good eye. Yes it’s the 25 x 4mm (approx) ring that I got with the release.
I get the impression that Evan will be producing manufacturing something, if he likes it?
I’m not really into the business of making parts to sell to others but if your really stuck I may be able to help out. I’m happy to share the model and there a plenty of 3d printing houses about that can make a part in the material of your choice....Let’s see what Evan says?

@alford.
Yes that was my intention. Though the spliced loop may have to be quite large to enable it to be threaded through the part and larks headed onto the rings. I’ll give it a go.
It would be nice if Evan made ring blocks in the same material as the QR. 8)


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