Contact   Imprint   Advertising   Guidelines

Infexion Seatbelt Quick Release

Forum for kitesurfers
faklord
Frequent Poster
Posts: 335
Joined: Sun Jan 09, 2011 6:03 pm
Brand Affiliation: None
Has thanked: 8 times
Been thanked: 23 times

Re: Infexion Seatbelt Quick Release

Postby faklord » Thu Jun 11, 2020 11:10 am

alford wrote:
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?
Ok. It was a bit tight with 5mm dyneema and more so with 6mm.
One option would be to use 3 or 4mm line and run the splice tail up the full length of the line. This should increase the strength & wear life substantially.

Anyhow, I’ve revamped the model to give more clearances and it is now fine with 6mm line. (It is also a simpler model, which is good).
63EC9560-289B-4C46-A930-57DC0E9CD228.png
63EC9560-289B-4C46-A930-57DC0E9CD228.png (173.05 KiB) Viewed 435 times
https://a360.co/30vna8h

This shows the fitting of a 6mm line. It needs a spliced loop of more than 5cm to make this possible.
5CDEB0F8-7D81-4D99-81E4-CC9C879B8B35.jpeg
E7504AFB-DB7E-47BE-8E47-F2634F57F87C.jpeg
69B6B111-F28E-4CCC-BD2D-2E950EA73BF4.jpeg
1E227D42-B7F4-4F18-A882-67CDAFB52042.jpeg
F34D1879-5D92-42AA-8821-AE254EB7526C.jpeg
23727A18-7F9B-4170-80FD-351FF0FDE0F1.jpeg
EBCCF62F-DB59-4079-B519-6B724A2A1B2C.jpeg
D3B9D257-D5CF-4D6B-AB01-964F2B560CA3.jpeg
I think some sort of soft pad/ball above the block would be a good idea to prevent bar impact from breaking the block, unless the block can be printed with something compliant like PU.
These users thanked the author faklord for the post (total 3):
iriejohn (Thu Jun 11, 2020 12:56 pm) • merl (Thu Jun 11, 2020 1:24 pm) • alford (Thu Jun 11, 2020 4:03 pm)
Rating: 25%

User avatar
iriejohn
Very Frequent Poster
Posts: 2033
Joined: Fri Dec 18, 2015 11:04 pm
Weight: 80kg, 1.80m
Local Beach: 50.7752° N, 0.9077° W
Style: This 'n that
Gear: Lieuwe Shotgun 138 x 42
Ozone Enduro V2 7m/9m/12m
Ocean Rodeo Flite 14.5m Aluula
Brand Affiliation: None
Location: Noviomagus Reginorum
Has thanked: 284 times
Been thanked: 139 times

Re: Infexion Seatbelt Quick Release

Postby iriejohn » Thu Jun 11, 2020 1:02 pm

faklord wrote:
Thu Jun 11, 2020 11:10 am
alford wrote:
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?
Ok. It was a bit tight with 5mm dyneema and more so with 6mm.
One option would be to use 3 or 4mm line and run the splice tail up the full length of the line. This should increase the strength & wear life substantially.

Anyhow, I’ve revamped the model to give more clearances and it is now fine with 6mm line. (It is also a simpler model, which is good).

https://a360.co/30vna8h

This shows the fitting of a 6mm line. It needs a spliced loop of more than 5cm to make this possible.
When you get the rope to the below position, can't you simply roll the rope loop over the ring to make the larks head then just pull the rope through the block? You'd only need a loop large enough to go over the ring and there'd be no need to use the thin cord.

Image

I think some sort of soft pad/ball above the block would be a good idea to prevent bar impact from breaking the block, unless the block can be printed with something compliant like PU.
I'll also put a drilled through 22mm rope stopper between the block and the bar as detailed earlier.
Last edited by iriejohn on Thu Jun 11, 2020 2:56 pm, edited 5 times in total.

merl
Frequent Poster
Posts: 341
Joined: Tue May 15, 2007 8:43 pm
Gear: RL kitefoil
Newind split wave

CA Pulsion 12m
FS Peak 4 5m
Gong strutted 9m
Slingshot SST 7m
Gong strutwave 5m
OR Razor 4m
Brand Affiliation: None
Location: West Sweden
Has thanked: 42 times
Been thanked: 17 times

Re: Infexion Seatbelt Quick Release

Postby merl » Thu Jun 11, 2020 1:24 pm

Awesome - this would be a nice addition to the seatbelt release.

Not having used this kind of software is it easy to tweak the design: the size of the hole for the line - e.g. for thinner line, and the size of the ring (20id x 5 and 25 x 5 are likely the most common variants)? Btw what is the size of the D ring you designed for?




faklord wrote:
Thu Jun 11, 2020 11:10 am

Ok. It was a bit tight with 5mm dyneema and more so with 6mm.
One option would be to use 3 or 4mm line and run the splice tail up the full length of the line. This should increase the strength & wear life substantially.

Anyhow, I’ve revamped the model to give more clearances and it is now fine with 6mm line. (It is also a simpler model, which is good).
63EC9560-289B-4C46-A930-57DC0E9CD228.png

https://a360.co/30vna8h

This shows the fitting of a 6mm line. It needs a spliced loop of more than 5cm to make this possible.
5CDEB0F8-7D81-4D99-81E4-CC9C879B8B35.jpegE7504AFB-DB7E-47BE-8E47-F2634F57F87C.jpeg69B6B111-F28E-4CCC-BD2D-2E950EA73BF4.jpeg1E227D42-B7F4-4F18-A882-67CDAFB52042.jpegF34D1879-5D92-42AA-8821-AE254EB7526C.jpeg23727A18-7F9B-4170-80FD-351FF0FDE0F1.jpegEBCCF62F-DB59-4079-B519-6B724A2A1B2C.jpegD3B9D257-D5CF-4D6B-AB01-964F2B560CA3.jpeg

I think some sort of soft pad/ball above the block would be a good idea to prevent bar impact from breaking the block, unless the block can be printed with something compliant like PU.

faklord
Frequent Poster
Posts: 335
Joined: Sun Jan 09, 2011 6:03 pm
Brand Affiliation: None
Has thanked: 8 times
Been thanked: 23 times

Re: Infexion Seatbelt Quick Release

Postby faklord » Thu Jun 11, 2020 4:00 pm

merl wrote:
Thu Jun 11, 2020 1:24 pm
Awesome - this would be a nice addition to the seatbelt release.

Not having used this kind of software is it easy to tweak the design: the size of the hole for the line - e.g. for thinner line, and the size of the ring (20id x 5 and 25 x 5 are likely the most common variants)? Btw what is the size of the D ring you designed for?
It's easy to tweak design but if you haven't used this type of CAD it may take a while to get your head around it. I just picked it up to play with, as something to do when the Covid lockdown started....So I'm no expert! For Info I'm using Fusion 360 which is currently free for personal use.
The D ring is one that's supplied by Infexion. Not sure of its formal size but I measured it to be this:
Screenshot 2020-06-11 at 15.25.08.png
Screenshot 2020-06-11 at 15.25.08.png (20.35 KiB) Viewed 352 times
I can't see any reason why a round ring couldn't be used instead (eg 15id x 3).

If there are some specific changes that you, or others, want (and you don't want to have a go yourself) let me know. I should be able to make updated models, as long as I don't get inundated with requests.
As I previously said, I don't really want to get into the making/selling parts and all the hassle of when things go wrong or break. That's Infexion's job. I also suspect their printers produce more robust parts than my DIY machine.

Why not get in touch with Evan and see if he has plans to manufacture this type of thing.

alford
Very Frequent Poster
Posts: 640
Joined: Thu Feb 25, 2016 7:53 pm
Gear: all brands
Brand Affiliation: None
Has thanked: 24 times
Been thanked: 23 times

Re: Infexion Seatbelt Quick Release

Postby alford » Thu Jun 11, 2020 4:14 pm

Could somebody provide the total length of the seatbelt QR with the ring and faklord's ring holder snapped in place?
Attachments
Screen Shot 2020-06-11 at 10.12.11 AM.png
Screen Shot 2020-06-11 at 10.12.11 AM.png (150.85 KiB) Viewed 344 times

faklord
Frequent Poster
Posts: 335
Joined: Sun Jan 09, 2011 6:03 pm
Brand Affiliation: None
Has thanked: 8 times
Been thanked: 23 times

Re: Infexion Seatbelt Quick Release

Postby faklord » Thu Jun 11, 2020 5:59 pm

C19011CC-85FE-40E1-8263-EBF2721B9FCD.jpeg
I guess there aren’t too many folk who can provide that!
These users thanked the author faklord for the post:
iriejohn (Thu Jun 11, 2020 9:42 pm)
Rating: 8.33%

alford
Very Frequent Poster
Posts: 640
Joined: Thu Feb 25, 2016 7:53 pm
Gear: all brands
Brand Affiliation: None
Has thanked: 24 times
Been thanked: 23 times

Re: Infexion Seatbelt Quick Release

Postby alford » Thu Jun 11, 2020 7:24 pm

faklord wrote:
Thu Jun 11, 2020 5:59 pm
C19011CC-85FE-40E1-8263-EBF2721B9FCD.jpeg

I guess there aren’t too many folk who can provide that!
You're right! Thanks again for all of your work here. This is one of the best topics in recent memory!

faklord
Frequent Poster
Posts: 335
Joined: Sun Jan 09, 2011 6:03 pm
Brand Affiliation: None
Has thanked: 8 times
Been thanked: 23 times

Re: Infexion Seatbelt Quick Release

Postby faklord » Thu Jun 11, 2020 9:57 pm

One more model
https://a360.co/3cVJ5Ig
Screenshot 2020-06-11 at 21.38.24.png
Screenshot 2020-06-11 at 21.38.24.png (118.97 KiB) Viewed 266 times
This one:
1) 25 x 4 mm main ring
2) 15 x 3mm round 'flag out line guide ring' (rather than the D ring). My guess is the dimensions of these, from different sources, will be more consistent than for the D rings.
3) The 15 x 3mm ring sits on top of the main ring rather than alongside. This gives more clearance to thread a large (6mm) power line through.
4) The main ring protrudes a bit more from the block to lessen the chance of a reset being blocked by a bit of line between the seatbelt release and ring block (eg the short line that goes to the safety release)
5) Its slightly taller(only a couple of mm), just to put a bit more meat on the bit above the 'flag out line guide ring' (it previously looks a bit flimsy)
6) Power lines from 3mm to 6mm seem to fit in fine.

I think we might be there.....
These users thanked the author faklord for the post (total 2):
iriejohn (Thu Jun 11, 2020 10:58 pm) • knotwindy (Fri Jun 12, 2020 12:06 am)
Rating: 16.67%

User avatar
iriejohn
Very Frequent Poster
Posts: 2033
Joined: Fri Dec 18, 2015 11:04 pm
Weight: 80kg, 1.80m
Local Beach: 50.7752° N, 0.9077° W
Style: This 'n that
Gear: Lieuwe Shotgun 138 x 42
Ozone Enduro V2 7m/9m/12m
Ocean Rodeo Flite 14.5m Aluula
Brand Affiliation: None
Location: Noviomagus Reginorum
Has thanked: 284 times
Been thanked: 139 times

Re: Infexion Seatbelt Quick Release

Postby iriejohn » Thu Jun 11, 2020 11:00 pm

faklord wrote:
Thu Jun 11, 2020 9:57 pm
One more model
https://a360.co/3cVJ5Ig

Screenshot 2020-06-11 at 21.38.24.png

This one:
1) 25 x 4 mm main ring
2) 15 x 3mm round 'flag out line guide ring' (rather than the D ring). My guess is the dimensions of these, from different sources, will be more consistent than for the D rings.
3) The 15 x 3mm ring sits on top of the main ring rather than alongside. This gives more clearance to thread a large (6mm) power line through.
4) The main ring protrudes a bit more from the block to lessen the chance of a reset being blocked by a bit of line between the seatbelt release and ring block (eg the short line that goes to the safety release)
5) Its slightly taller(only a couple of mm), just to put a bit more meat on the bit above the 'flag out line guide ring' (it previously looks a bit flimsy)
6) Power lines from 3mm to 6mm seem to fit in fine.

I think we might be there.....
25mm X 4mm and 15mm X 3mm 316 round rings are readily available.

Spliced 4mm rope is ~5.7mm diameter, spliced 5mm is ~7mm diameter, and spliced 6mm is ~8.5mm diameter (calculated) ...

evan
Very Frequent Poster
Posts: 559
Joined: Sat Jan 31, 2004 5:48 pm
Local Beach: Brouwersdam
Style: Hydrofoil - Big Air
Gear: Moses Comet 111 2018
Peter Lynn Aero
Brand Affiliation: Infexion
Peter Lynn
Moses
Has thanked: 8 times
Been thanked: 69 times
Contact:

Re: Infexion Seatbelt Quick Release

Postby evan » Mon Jun 15, 2020 5:31 pm

faklord wrote:
Thu Jun 11, 2020 9:57 pm
Made my own version from scratch, although it looks quite similar:



My adjustmenst after a few iterations:
-more reliable to print in PETG
-lighter, more compact
-better grip
-tight fit for the rings to make an even better connection
-open front to ease the installation of the rope


Side by side:
Attachments
IMG_20200615_183941.jpg
IMG_20200615_184032.jpg
IMG_20200615_184040.jpg
These users thanked the author evan for the post:
iriejohn (Mon Jun 15, 2020 6:07 pm)
Rating: 8.33%


Return to “Kitesurfing”

Who is online

Users browsing this forum: AndersP, andikite, Bing [Bot], Google [Bot], lchen, pākihiroa, tizzleberg and 20 guests