Please post any commentary under foil the greats similar post in the wing foiling section to avoid doubling up . Thank you.
Finally an Armstrong HA , looks like a Sky Rama tail design to go with it, and the extra screw in the side of the mast to address the shearing problem that some have experienced.Down goes the savings account again.....
Finally an Armstrong HA , looks like a Sky Rama tail design to go with it, and the extra screw in the side of the mast to address the shearing problem that some have experienced.Down goes the savings account again.....
What is the shearing problem??? Never heard of it.
Is this just for downwinding? Hopefully we can Jerry rig our current mast and fuselages to be compatible. That stab looks fun!
I'm going to guess the extra screw is to eliminate any wobble from the hex. Like zero, no way, any wobble, ever, for everyone. Because any wobble is going to lead to eventual hex wear. Hex wear has been shown on this forum.
Finally an Armstrong HA , looks like a Sky Rama tail design to go with it, and the extra screw in the side of the mast to address the shearing problem that some have experienced.Down goes the savings account again.....
What is the shearing problem??? Never heard of it.
The last progression project guest Cole Kawana posted a pic of it , one of the screws that hold the mast to fuse snapped or sheared off , either not nipped up or the play in the connection eventually sheared the head off the screw after quite a long time.No big deal really its only a screw and no damage to mast or fuse but he had to get a machine guy to get the remainder of the screw out of the fuse. My theory is keep the connections tight and all the load is on the hex surfaces and none on the screws. All my screws over 14 months now, multiple wing changes and fuses , use 5+ times a week and no broken screws. Armstrong advise replace screws every 12 months anyhow, Armstrong appear to be adding an extra screw in the side of the mast from the pic of the HA wing.
Screws are not shearing in my opinion. They fatigue fracture. Any wobble in the hex would cause screw fatigue fracture. Stainless steel screws cannot tolerant "any" back and forth pressure. They will fatigue and snap. So throwing more screws in there will reduce the risk of any wobble. No wobble, no screws failing. All the strength comes from the hex, not screws.
Screws are not shearing in my opinion. They fatigue fracture. Any wobble in the hex would cause screw fatigue fracture. Stainless steel screws cannot tolerant "any" back and forth pressure. They will fatigue and snap. So throwing more screws in there will reduce the risk of any wobble. No wobble, no screws failing. All the strength comes from the hex, not screws.
I am a structural engineer and I agree. The wing is bottomed out on the positive stop on the fuse, so the screws should not be under any shear force (unless the wing is going backwards). I thought the screws were titanium and not stainless. I don't have any experience with fatigue strength of ti but over torquing will weaken or break any material.
I think the screws are steel ,the fuse has a titanium rod inside with threaded holes.
I think the screws are steel ,the fuse has a titanium rod inside with threaded holes.
This is correct. Thought being that titanium on titanium wouldn't hold as well.
Screws are not shearing in my opinion. They fatigue fracture. Any wobble in the hex would cause screw fatigue fracture. Stainless steel screws cannot tolerant "any" back and forth pressure. They will fatigue and snap. So throwing more screws in there will reduce the risk of any wobble. No wobble, no screws failing. All the strength comes from the hex, not screws.
I'm not a structural engineer so I don't no the correct terms but the screws are stainless and fuse is titanium.Any movement is going to work those screws side to side and stainless likes to snap when being worked.So I guess you either got to make the fuse connection nice and snug , or rely on the screws staying tight to ensure no movement . I like to do both but from hilly's experience seems tight screws in enough 99% of the time.
So why is this saying an 85 cm mast is what is required in small surf? I have to use a 60 cm mast in my small surf! I guess its turning and causing the tips to come out?
So why is this saying an 85 cm mast is what is required in small surf? I have to use a 60 cm mast in my small surf! I guess its turning and causing the tips to come out?
Yep that would be my guess too
Spot on. I use an 85 mast with the 1250 and still get tips out. A metre wide wing will come out easily. Not sure surfing is these wings main game though.
Dear Foil lover,
There has been a lot going on over the last 6 months and we are excited to bring you some epic new products and the new A+ system.
The new products.
1) A+System.
For over a year, Armie has been working on our new "A+System" which is designed to take strength and durability into the future. With the introduction of our new High Aspect (HA) range of foil wings, the increased torque and forces transferred to the mast and fuselage needed to be addressed. The A+System is the result of many hours of design and testing that ensures our multi-functional modular system can take the loads that are applied to all parts when riding true HA wings! The new A+System has full-width screws and Titanium Barrel Nuts across both mast and front wing connection and locks them in position.
*Please refer to the PDF for the nitty-gritty on the A+System.
2) TC Fuselage A+System
Running through the heart of each fuselage is a solid Titanium Core, our new A+System takes advantage of this by incorporating full width Titanium Barrel Nuts across both mast and front wing connections to lock them in position. We've streamlined, strengthened and simplified the rear wing connection by attaching the tail wing directly to the fuselage. For most riders this means a simple, direct, shim-less connection of the tail wing.
3) High Aspect Foil Wing.
You asked we deliver...Performance, speed and glide have been taken to the next level with the HA 1125. We have worked closely with the top Americas Cup helmsman and foiling addicts, Pete Burling (Emirates, Team New Zealand) and Jimmy Spithill (Luna Rossa, Team Italy) who have both been giving feedback and input during the development process. At 9.8:1 the HA 1125 is a true High Aspect ratio foil wing that sets the standard for glide performance while retaining enough handling that it can be turned easily, making for an exceptional ride. Advanced Winging, kiting and Downwind aficionados requiring max glide performance will want to get their hands on this wing simply because it is next level for pump and glide!
The HA1125 is available to order now, more sizes coming soon!
4) HS1550 V2 Foil Wing.
The HS1550 was our first HS wing and it has proven to be a winner. The V2 builds on that success with subtle refinements to handling and a good injection of performance! Faster, smoother, more agile, better pump and progressive in pitch make it simply more exciting to ride.
5) Flying V Tail Wing.
The Flying V 200, is our take on the latest understanding of what a radical tail wing should be! Inspired by our team rider, Skyrama, Armie has taken it one step further by mixing in some off-limits Americas Cup design secrets to create the very cutting-edge Flying V.
6) CF300 V2 Tail Wing.
The CF300 V2 has had its thickness and planform re-worked to further improve it's forgiving nature. It incorporates the perfect amount of anhedral curve in the centre and dihedral curve at the tips for an overall high level of stability with smooth progressive pitch control at all speeds and bank angles.
7) HS 232 V2 Tail Wing
The HS 232 is our performance all-rounder. The V2 has refinements to thickness and planform to improve its overall performance and speed. The foil section has been updated for more top end, it has a thinner profile with more camber which helps retain stability throughout its speed range.
A+ Fuselage Special
We realise that there will be many loyal AF peeps out there who will want to upgrade their First Generation kit into the A+ System.
We are making this super easy by offering a limited special on the A+ Fuselage and A+ System upgrade kit (Jig and drill bits) which includes the PC Shims too.
*All current fuselages (in current mast) fit new A+System foils AND current foil range.
*All current front foil range can easily be updated to A+ system screws with A+ System upgrade drilling jig kit only.
*Current masts can be updated to take new A+ system fuselage with the drilling jig kit.
Retail price is $538.99 USD
Special is $399.99 USD
Simply add a Fuselage into the website shopping cart and at check out, please quote coupon code AFUSE and the discount will apply.
Please note that the offer will automatically include the A+ Conversion kit and shims when your Fuselage ships.
This special expires on 18th April 2021.
Happy Flying
With all the HA1125 excitement, did this slip under the radar?
www.armstrongfoils.com/hs1550-v2-wing/
Regardless - I've ordered the HA1125! Will retrofit to my old 60 fuse with the drill kit, and give it a crack on my stumpy 72cm mast until I can afford the 85 or maybe even the 93.
KDM 13" tail 4'8 40 litre prone - will let you know how it goes, as I'm frothing to do some wing tip sprays!
Any in stock or do you have to wait for them to be shipped ?
Yeah shipped, but at least Alex from Stonker got me sorted for one from their first allocation. I'm guessing they'll be rocking horse poo for a while.
With all the HA1125 excitement, did this slip under the radar?
www.armstrongfoils.com/hs1550-v2-wing/
Regardless - I've ordered the HA1125! Will retrofit to my old 60 fuse with the drill kit, and give it a crack on my stumpy 72cm mast until I can afford the 85 or maybe even the 93.
KDM 13" tail 4'8 40 litre prone - will let you know how it goes, as I'm frothing to do some wing tip sprays!
I ordered the new50 a+ fuse while it was on special and includes the drill kit etc. you can use the new 1125 on your old fuse but they say you can't drll the fuse to fit the extra bolts. I was wanting to try the 50 fuse anyway so the fact that it was cheaper tempted me to grab one. I didn't really notice a difference when I went from the 70 to the 60 so hopefully I can handle the 50.
seems that if you used the new swept back swallow tail it would effectively lengthen your fuse anyway.
That looks impressive guess the rider is about 70 kg though. Might wait to see how less skilled riders like myself find it.
50 works a treat on 1850,1550,1250 ......becomes a bit of a handful on 1050 but I'm getting used to it
With all the HA1125 excitement, did this slip under the radar?
www.armstrongfoils.com/hs1550-v2-wing/
Regardless - I've ordered the HA1125! Will retrofit to my old 60 fuse with the drill kit, and give it a crack on my stumpy 72cm mast until I can afford the 85 or maybe even the 93.
KDM 13" tail 4'8 40 litre prone - will let you know how it goes, as I'm frothing to do some wing tip sprays!
I ordered the new50 a+ fuse while it was on special and includes the drill kit etc. you can use the new 1125 on your old fuse but they say you can't drll the fuse to fit the extra bolts. I was wanting to try the 50 fuse anyway so the fact that it was cheaper tempted me to grab one. I didn't really notice a difference when I went from the 70 to the 60 so hopefully I can handle the 50.
seems that if you used the new swept back swallow tail it would effectively lengthen your fuse anyway.
I think you can use the extra wing screw in the top of the new wings with the old fuse ,but not the side screw in the masts ?
I think you can use the extra wing screw in the top of the new wings with the old fuse ,but not the side screw in the masts ?
From what I understand the mast/fuse screws tighten into the titanium core, so drilling and tapping the 3rd horizontal would be beyond most mortals
I didn't realise the wing/fuse holes are threaded into the solid carbon, but at least that makes it possible to home drill (with jig guidance) the 3rd hole for the sex/barrel bolt