Author Topic: WINGS with Bar  (Read 2285 times)

PonoBill

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Re: WINGS with Bar
« Reply #15 on: January 19, 2020, 08:56:30 PM »
I made super lightweight carbon booms for my Duotones. Far superior to the aluminum stuff and easy to do. What I don't like about Duotone is the instability of the 5M wing. What is a minor fault with the 3 and 4M is more irritating with the 5M. It works, and it's a solid second best in my book, but the stability of the F-one is better.

The fake boom on my F-ones would be unlikely to damage anything--less than 300 grams. I've come up with a few designs for ultralight actual booms, but I'd have to take apart a strut and do a bunch of sewing to make one. As soon as I can get my new 3D printer to stop making piles of plastic instead of parts I'll print a few bits and try to get someone to do the sewing.
Foote 10'4X34", SIC 17.5 V1 hollow and an EPS one in Hood River. Foote 9'0" x 31", L41 8'8", 18' Speedboard, etc. etc.

DownSouth

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Re: WINGS with Bar
« Reply #16 on: January 19, 2020, 09:19:28 PM »
Have you experimented with rigid strut handles or rigid strut mounted bars?

Not quite sure what you mean by Ridge strut.  We made some very rigid handles and the get more comfortable in the hand sure but the weight becomes an issue.  I do not see that advantage here yet sure you get to have better input into the wing but that is minimal.

The problem with mounting a bar to a Strut is also weight. It can be done relatively easy.  Believe it or not but a strut with bladder and all construction part all add weight. Were a carbon bar/light front pice can be in the same world weight wise as a strut +-. If I am not mistaken we can get the weight diff down to +- 30 g dry ...   

Perhaps the solution here is the dragon Fly solution with removable handles.
 

Any pics of the prototype starboard?

There are some photos of the Starboard wing which have been taken at the Dusseldroff Boot trade fair.
 


peterp

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Re: WINGS with Bar
« Reply #17 on: January 19, 2020, 11:02:13 PM »
Swing with Duotone boom conversion

obxDave

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Re: WINGS with Bar
« Reply #18 on: January 19, 2020, 11:32:16 PM »
Swing with Duotone boom conversion

Ok, now were talking. Sort of what Im envisioning for a V2 Duotone. Flatten the wing, get rid of the massive battens, go ultralight Carbon,......and of course up the prices by 30% over the V1,.....cause were all hooked and willing to pay the price :P

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Re: WINGS with Bar
« Reply #19 on: January 20, 2020, 01:09:03 AM »
Have you experimented with rigid strut handles or rigid strut mounted bars?

Not quite sure what you mean by Ridge strut.  We made some very rigid handles and the get more comfortable in the hand sure but the weight becomes an issue.  I do not see that advantage here yet sure you get to have better input into the wing but that is minimal.

The problem with mounting a bar to a Strut is also weight. It can be done relatively easy.  Believe it or not but a strut with bladder and all construction part all add weight. Were a carbon bar/light front pice can be in the same world weight wise as a strut +-. If I am not mistaken we can get the weight diff down to +- 30 g dry ...   

Perhaps the solution here is the dragon Fly solution with removable handles.
 

Any pics of the prototype starboard?

There are some photos of the Starboard wing which have been taken at the Dusseldroff Boot trade fair.

Hi DownSouth,

I don't mean a rigid strut.  I mean rigid handles mounted to an inflatable strut.

The Swing is the lightest wing design right now.  The 5 Meter Swing for instance is 4.2 lbs.  That is .4 lbs lighter than a 3 meter Duotone boomed wing.  That ultra light weight and the deep stable shape that they have achieved is what has made it so desirable.  I know that I am not looking for major change to that design.  Tweaks to the handles would be great though.  Have a look at the image below.  The total handle span on the Swing is terrific.  Adding span to that would just be adding excess weight.  The current crutch style booms are 1.8 lbs and they put boom in areas that are never used.  You could very easily remove the fabric handles on a Swing style design and replace them with rigid handles, rigid micro bars or single bar with that same spread.  That would be a very light weight solution that could offer modularity and the most immediate response to user input.

My perfect would be two handles only that were each 1.5x the width of current swing handles.  This would eliminate the third handle.  One problem with all of the fabric handles is that they have an arced shape which is partially unusable.  By going to a rigid more rectangular handle at a slightly larger width and with a rigid attachment to the strut you could answer all current sniggles.  Easy hand passes, immediate response, and all without any significant weight sacrifice.  Handles could be removable (tool free) and usable across all wing sizes so the wings would become even more packable and the expense of a really nice handle set could be spread across all wing sizes.  To accomplish that you would need to add nothing rigid the the wing.  There are a variety of attachment methods that would allow this and that could make use of the width of the strut to get a really bomber attachment with much better leverage than a boom or current handles.  using a single bar across that same span would be fine as well.  You could easily give riders that option as the system could/should be modular.


« Last Edit: January 20, 2020, 03:39:07 AM by Admin »

PonoBill

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Re: WINGS with Bar
« Reply #20 on: January 20, 2020, 01:14:01 AM »
I think the big problem with the larger duotones is that the canopy isn't controlled well. A solution like the converted Fone is pretty close to what I wanted to do--connect a web of cloth to the boom in a few places. That boom looks needlessly heavy. Thin-walled carbon tubing (I used light Kenalu tapered paddle shafts) would weigh a third of what that looks like from just a picture. I did one telescoping and then decided to just make wing-specific booms for the least weight. I added a ring of carbon for the clew to attach to and an outhaul for tension adjustment. Weight is a big deal with these wings.
« Last Edit: January 20, 2020, 01:20:09 AM by PonoBill »
Foote 10'4X34", SIC 17.5 V1 hollow and an EPS one in Hood River. Foote 9'0" x 31", L41 8'8", 18' Speedboard, etc. etc.

burchas

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Re: WINGS with Bar
« Reply #21 on: January 20, 2020, 07:08:21 AM »
My perfect would be two handles only that were each 1.5x the width of current swing handles.  This would eliminate the third handle.  One problem with all of the fabric handles is that they have an arced shape which is partially unusable.  By going to a rigid more rectangular handle at a slightly larger width and with a rigid attachment to the strut you could answer all current sniggles.  Easy hand passes, immediate response, and all without any significant weight sacrifice.  Handles could be removable (tool free) and usable across all wing sizes so the wings would become even more packable and the expense of a really nice handle set could be spread across all wing sizes.  To accomplish that you would need to add nothing rigid the the wing.  There are a variety of attachment methods that would allow this and that could make use of the width of the strut to get a really bomber attachment with much better leverage than a boom or current handles.  using a single bar across that same span would be fine as well.  You could easily give riders that option as the system could/should be modular.

That would be my perfect system as well. I had in mind 2 slide-in ergo battens that fits right on an ergonomically improved version of the current handles.
I found a foot long piece of something that might fit the bill out of thermoplastic that is rigid as they come and weighs only 0.6oz so I'm confident that a dedicated solution for this wing could be achieved without noticeable weight and would be superior, to my taste, to any full boom solution.
Bunch of sh*t that doesn't mean much to most

Wetstuff

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Re: WINGS with Bar
« Reply #22 on: January 20, 2020, 07:23:55 AM »
Boss, I made 'rigid' handle covers for my early Ozone wing loops. The foam core (now upgraded by Ozone) was too thin/soft to my taste. I also did not want to radically change the OD, so I just added 'stiff' for the tops tops of the handles.  The DragonFly 'removable' handles that were mentioned (I have not seen in person) appear to -perhaps be- footstrap-type overwraps. (mine are similar - except thin).

https://wetstuff.com/Ebay/OZhandlesRear.jpg

(early version pic - you can better see the top in blue)


Jim





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Re: WINGS with Bar
« Reply #23 on: January 20, 2020, 08:42:41 AM »
Boss, I made 'rigid' handle covers for my early Ozone wing loops. The foam core (now upgraded by Ozone) was too thin/soft to my taste. I also did not want to radically change the OD, so I just added 'stiff' for the tops tops of the handles.  The DragonFly 'removable' handles that were mentioned (I have not seen in person) appear to -perhaps be- footstrap-type overwraps. (mine are similar - except thin).

https://wetstuff.com/Ebay/OZhandlesRear.jpg

(early version pic - you can better see the top in blue)


Jim

Hey Jim,

I remember when you made that mod.  While I think stiffeners have potential for some improvement, the full fix really needs to get rid of the sloppy fabric handles altogether and get a rigid handle firmly secured to the strut itself with increased footprint.  I completely understand not wanting to make major mods to a $900.00 wing but that will be an amazing solution when it comes.  Here is a link to the original Dragonfly post  https://www.standupzone.com/forum/index.php/topic,35457.msg408630.html#msg408630 .  That one still has soft handles, etc, so in my mind it is not really that significant of an upgrade.

One really classy way that this could be done is to have to two strips of parallel Spectra webbing (or similar) running lengthwise on the strut with 3-4 inches between them.   They would be stitched and reinforced so that there would be very snug loops every inch or so along the full length of each strip.  The radiused base plates of the handles (or bars) would have tabs that inserted into these loops.  The tabs and loops would be the same dimension.  Insert when partially inflated and full inflation would fully secure them.  That would allow a super rigid connection and would allow any width or configuration.  It would be entirely customizable  as well as very light and inexpensive. 

Here is a super rudimentary strut mock-up.  It shows two handles with 4 tabs each.  In reality the radiused plate and the tabs would match the curve of the strut. The plate width would match the spread of the two strips (no gaps).  The tabs would be rounded and the plate itself would be greatly reduced.  A bar or mini bars could be attached in the same way.  Any length bar would work so riders could really choose what they wanted.  # of handles, length of bar, bar diameter, bar shape, 90 degree handle.  No restrictions.  Riders sharing a quiver can each get their perfect in a matter of seconds.

I know that I would be happy to buy a set of long carbon handles or a small bar of this design. 
 
« Last Edit: January 20, 2020, 10:53:07 AM by Admin »

PonoBill

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Re: WINGS with Bar
« Reply #24 on: January 20, 2020, 10:16:05 AM »
Boss, I made 'rigid' handle covers for my early Ozone wing loops. The foam core (now upgraded by Ozone) was too thin/soft to my taste. I also did not want to radically change the OD, so I just added 'stiff' for the tops tops of the handles.  The DragonFly 'removable' handles that were mentioned (I have not seen in person) appear to -perhaps be- footstrap-type overwraps. (mine are similar - except thin).

https://wetstuff.com/Ebay/OZhandlesRear.jpg

(early version pic - you can better see the top in blue)


Jim

I did something similar for the first fake boom mount. I made a plate of carbon, about ten laminations, and then cut it into strips the length of the inside of the handles if they were stretched tight. I slid the strips into tube webbing and sewed on velcro fasteners. I used them both with and without the boom. Without the boom, they were a big improvement, but with the boom was much better, both for rigidity and control in transitions. But then I switched to sections of carbon tube for the attachment, which isn't as good for stiffening the handles but are more positive in holding the boom.
Foote 10'4X34", SIC 17.5 V1 hollow and an EPS one in Hood River. Foote 9'0" x 31", L41 8'8", 18' Speedboard, etc. etc.

DownSouth

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Re: WINGS with Bar
« Reply #25 on: January 23, 2020, 11:26:39 AM »
Hi , 

Here is a different point of view why a bar opposed to a strut.  No question that the Foen or many other wings functions well and suits the purpose. But could the wing function be batter is it would not flex?

The Flex in this photo is still mild.

Dwight (DW)

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Re: WINGS with Bar
« Reply #26 on: January 23, 2020, 11:43:38 AM »
The Fone strut is curved like that with no load.

DownSouth

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Re: WINGS with Bar
« Reply #27 on: January 23, 2020, 12:16:21 PM »
The Fone strut is curved like that with no load.

Fone has got a reflex in the back part of the profile agree. Fones was simply and example here. ( no cirt to Foen here at all )I have attached a photo of a Cab wing in a extrema situation.  I am wondering is this is not a arguement for the bar which is constructed corelcty will give better profiel suport.


JEG

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Re: WINGS with Bar
« Reply #28 on: January 23, 2020, 12:30:21 PM »
that wasp look good though  8)

DownSouth

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Re: WINGS with Bar
« Reply #29 on: January 23, 2020, 12:32:19 PM »
it is not an exact science , but Fone certainly looks less curved when not loaded

 


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