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relative position mast back footstrap

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dericcio2
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relative position mast back footstrap

Postby dericcio2 » Tue Jan 05, 2021 8:35 pm

dear builders I am planning a board without chinhook and I want to keep it to minimum mast/foot binding points.
normally I use with going pro surf m the foot over the mast or slightly ahead.if in future if i switch to an higher AR wing how behind should be the rear foot compared to the mast?

grigorib
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Re: relative position mast back footstrap

Postby grigorib » Tue Jan 05, 2021 10:30 pm

Been riding Moses masts/wings for last 3 years. With kite wings my back foot big toe is right behind the rear mast plate hole. With surf wings the rear mast plate hole is behind my back foot big toe.
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dericcio2 (Tue Jan 05, 2021 10:37 pm)
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dericcio2
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Posts: 45
Joined: Wed May 23, 2007 1:18 pm
Local Beach: South of Germany and north east Italy
Style: Freestyle Freeride
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Re: relative position mast back footstrap

Postby dericcio2 » Tue Jan 05, 2021 10:38 pm

wich wings are you using?
grigorib wrote:
Tue Jan 05, 2021 10:30 pm
Been riding Moses masts/wings for last 3 years. With kite wings my back foot big toe is right behind the rear mast plate hole. With surf wings the rear mast plate hole is behind my back foot big toe.

grigorib
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Posts: 2764
Joined: Mon Aug 01, 2016 8:12 pm
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Local Beach: OBX; Clinton Lake, IL; Lake Michigan; La Ventana; SPI; Hood River; Tawas, MI
Gear: Kites: Slingshot Rally 5/7/9/11m, Turbine 9m, SST 4/5/7m, UFO 5/7/9m, Flysurfer Speed4 10m standard, Peter Lynn Venom II ARC 16m

Boards: Spleene RIP 37, Flysurfer Radical6 138, Flysurfer Flydoor5 XL, Slingshot/Moses 80/91/101cm masts with 800/425 695/425 637/420 1000/421 wingsets, 36" Woody, Slingshot Dwarfcraft Micro 3'6" 2019-2020, MBS Comp 95x

For sale: Moses 80cm alu mast $260
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Re: relative position mast back footstrap

Postby grigorib » Wed Jan 06, 2021 12:58 am

dericcio2 wrote:
Tue Jan 05, 2021 10:38 pm
wich wings are you using?
grigorib wrote:
Tue Jan 05, 2021 10:30 pm
Been riding Moses masts/wings for last 3 years. With kite wings my back foot big toe is right behind the rear mast plate hole. With surf wings the rear mast plate hole is behind my back foot big toe.
I went through following
Kite 545(558)/548/590/695/637/800 with 328(330)/325/330/420/425 stabilizers
Surf 633/683s/679 with 483/450 stabilizers (450 shimmed up to decrease front foot pressure)

Ended up with these for now
Attachments
632D76AD-151E-4AE2-8FB5-B0E4A1529F17.jpeg

dericcio2
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Re: relative position mast back footstrap

Postby dericcio2 » Wed Jan 06, 2021 9:30 pm

Thanks for tip.
I expected a position of rear foot by using the surf wing not so much behind.
I sketched the different configurations up: distance middle point of footstrap - Middle point of mast around -8cm (your surfwing position)
around -18cm High AR
The behaviour of my surf wing requires back foot more forward: big toe slightly in front of center of mast ( distance between 0 and +5 cm) .

Well to suit both extreme positions +5 (my surf wing) - 18cm (High AR) it means fixing points for the plate for a length of around 35cm, pretty long for a pocket board of 110cm, I wonder if it makes sense race wing on pocket board without volume

grigorib wrote:
Wed Jan 06, 2021 12:58 am
dericcio2 wrote:
Tue Jan 05, 2021 10:38 pm
wich wings are you using?
grigorib wrote:
Tue Jan 05, 2021 10:30 pm
Been riding Moses masts/wings for last 3 years. With kite wings my back foot big toe is right behind the rear mast plate hole. With surf wings the rear mast plate hole is behind my back foot big toe.
I went through following
Kite 545(558)/548/590/695/637/800 with 328(330)/325/330/420/425 stabilizers
Surf 633/683s/679 with 483/450 stabilizers (450 shimmed up to decrease front foot pressure)

Ended up with these for now
Attachments
mast.png
mast.png (15.9 KiB) Viewed 130 times

grigorib
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Local Beach: OBX; Clinton Lake, IL; Lake Michigan; La Ventana; SPI; Hood River; Tawas, MI
Gear: Kites: Slingshot Rally 5/7/9/11m, Turbine 9m, SST 4/5/7m, UFO 5/7/9m, Flysurfer Speed4 10m standard, Peter Lynn Venom II ARC 16m

Boards: Spleene RIP 37, Flysurfer Radical6 138, Flysurfer Flydoor5 XL, Slingshot/Moses 80/91/101cm masts with 800/425 695/425 637/420 1000/421 wingsets, 36" Woody, Slingshot Dwarfcraft Micro 3'6" 2019-2020, MBS Comp 95x

For sale: Moses 80cm alu mast $260
.
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Re: relative position mast back footstrap

Postby grigorib » Wed Jan 06, 2021 10:52 pm

I used my previous measurement for the board I designed and I still could do better but I also wanted to accommodate 90x140 setup used in original Ghost Whisper (they messed up 90x165 making it 90x160 but had more mast plate holes which I could use)

And I love any wings on pocket board - the race wings let me ride fast, larger wings cover lightwind - it’s all good. I’m a type of a guy who hates touching water with the board so I dive and fly up

I love 800 wing because it’s racy fast (stable and without having to push it like crazy) and it can do lightwind too being 840 sq.cm wing
Attachments
image.jpg

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downunder
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Re: relative position mast back footstrap

Postby downunder » Thu Jan 07, 2021 4:05 am

^
Did you build this? How big and thick?


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