@@AJHewson1yeah how your working out how to use ammounts of layers of fibre where would be great . i already do layups of 900 wide wings but that scale is easy compared to 1/3 scale for stress related layups
Great job Alex, congratulations!!!! I would like to say that using kevlar fabric strips cut at 45 degrees is much more recommendable as in that case all the fibers cross the hinge line and it is more resistant.
Question for you or viewers- I'm new to scratch building rc planes. Just learning to build Armin Wings on RUclips It appears to me after building one is the control surfaces is beyond the airfoil & not part of the design itself. Almost as an afterthought that attaches to the trailing edge of the airfoil etc. Issue is if you build a 30" wing, the top portion while building it get curved over and glued to the bottom portion of the wing. The extra 1" or 1 & 1/2 gers a hinged bevel cut after the airfoil so unless one uses entire 30" as the control surface if one uses just 10" ailerons the remaining trailing edge simply curves downward almost appearing like Flaps. I assume a better wing is one jnwhick the control surfaces are cut within the airfoil & not added ar trailing edges.
This crossed my mind too when I first scratch built a wing. You are right though, cut the control surface out of the wing to keep the dimensions of the airfoil. 🤘😁
Nice job. I see people cuting the intrados side not aligned with the extrados in order to create a smooth movement of the airelon. Is that not correct? Not aligned means a couple of mm inside the wing.
@@markfisher8943 this wasn’t a small wing, so it managed it quite well. If you look at it closer, you will see it’s more of a triangle geometry which helps
Alex, any reason why you put the gap on the top side rather than on the bottom? When glassing the wing with the Kevlar hinges, does the Kevlar get epoxy as well? If so, how does it stay pliable for the hinge? Also, does the Kevlar ever wear out or is it indestructible? Awesome videos.
Hi! I put the gap on the top side so that when you deploy flaps down, the surface doesn’t reduce in size as it slots further into the wing. Also maintains a clean bottom surface through all stages of flight. There’s probably benefits along the lines of maintaining no gaps by top hinging, and the difference between each is probably negligible. Kevlar is wet out with epoxy too as. When the hinge is freed up, the epoxy breaks free of the fibers and just the Kevlar remains. I’ve yet to wear out a Kevlar hinge, although, a Kevlar hinge is not repairable. I always use a heavy weight kevlar to try mitigate this risk. This is why you don’t see kevlar hinges on manned aircraft
Thanks Lars! Yeah, it's a great tool. Back when I was machinist, I saved a few old inserts that couldn't be used anymore of the ceramics and titanium machining, but still has good enough edges. Sadly I made a few tools and gave them to friends and I have no spares 😅
Just about to undertake a1/3 scale swift project soon . This is a great tutorial to see some of the details most dont show
Thanks! Let me know if there’s any other details I can post that may help
@@AJHewson1yeah how your working out how to use ammounts of layers of fibre where would be great . i already do layups of 900 wide wings but that scale is easy compared to 1/3 scale for stress related layups
@@ruedogs send me a message somewhere and I’ll email you a spreadsheet that helps
Great job Alex, congratulations!!!! I would like to say that using kevlar fabric strips cut at 45 degrees is much more recommendable as in that case all the fibers cross the hinge line and it is more resistant.
Agreed, but for ease of build and using a thicker, available tape, you still end up with plenty of Kevlar across the hinge point
Really beautiful, nice work! :D
Nice work beautiful wing
Thank you man. Nifty.
Where would one source light kevlar fabric? What weight did you use here? Need to hinge a DLG wing. Places around me only carry 5oz/m or so.
I used to buy it in tape form, now it doesn’t seem to be manufactured anymore. Im still on the lookout for other options
Very nicely done, mate. Thumbs up, and subscribed!
Thanks!!
Question for you or viewers-
I'm new to scratch building rc planes. Just learning to build Armin Wings on RUclips
It appears to me after building one is the control surfaces is beyond the airfoil & not part of the design itself. Almost as an afterthought that attaches to the trailing edge of the airfoil etc.
Issue is if you build a 30" wing, the top portion while building it get curved over and glued to the bottom portion of the wing. The extra 1" or 1 & 1/2 gers a hinged bevel cut after the airfoil so unless one uses entire 30" as the control surface if one uses just 10" ailerons the remaining trailing edge simply curves downward almost appearing like Flaps.
I assume a better wing is one jnwhick the control surfaces are cut within the airfoil & not added ar trailing edges.
This crossed my mind too when I first scratch built a wing. You are right though, cut the control surface out of the wing to keep the dimensions of the airfoil. 🤘😁
Nice job. I see people cuting the intrados side not aligned with the extrados in order to create a smooth movement of the airelon. Is that not correct? Not aligned means a couple of mm inside the wing.
I think i follow what you are saying. Having a gap to allow the aileron skin to follow underneath the wing skin as it arcs forwards?
@@AJHewson1 see the last video from @Ramyrc
@@jorgarciahern problem with having that point too far forward is that it then creates an airbrake when articulated the other way
Nice job !!!
I would put the oscillating tool a little too deep when making that relief cut and ruin the whole wing
Did you do a. Video of making this elliptical wing? Clearly not wire cut. How did you laminate?
@@markfisher8943 no I didn’t sorry, it was wire cut in sections that were glued together to create a near elliptical shape.
@@markfisher8943 laminate was done the same as my other layup video. Pretty much exactly the same
@@AJHewson1 How did you get that shiny finish ? I wouldnt have thought the Mylar would conform to the compond curves?
@@markfisher8943 this wasn’t a small wing, so it managed it quite well. If you look at it closer, you will see it’s more of a triangle geometry which helps
@@AJHewson1 I am surprised, but happy it went well. Have you ever tried making your own prepreg?
Awesome video! Subbed and belled. 🤘
Alex, any reason why you put the gap on the top side rather than on the bottom? When glassing the wing with the Kevlar hinges, does the Kevlar get epoxy as well? If so, how does it stay pliable for the hinge? Also, does the Kevlar ever wear out or is it indestructible? Awesome videos.
Hi! I put the gap on the top side so that when you deploy flaps down, the surface doesn’t reduce in size as it slots further into the wing. Also maintains a clean bottom surface through all stages of flight. There’s probably benefits along the lines of maintaining no gaps by top hinging, and the difference between each is probably negligible.
Kevlar is wet out with epoxy too as. When the hinge is freed up, the epoxy breaks free of the fibers and just the Kevlar remains.
I’ve yet to wear out a Kevlar hinge, although, a Kevlar hinge is not repairable. I always use a heavy weight kevlar to try mitigate this risk. This is why you don’t see kevlar hinges on manned aircraft
Can I ask what foam u use and how much does it cost
It’s 30kg per cu/m XPS foam. Costs vary around the world
Awsome!
Whats the name of the tool?
Which tool are you referring to?
@@AJHewson1the one that is like a Pen.
@@Golf0 the hinge-line scribes? This is a tool I made myself
Hi Alex, nice wing ! what is the model ?
Scroll to the bottom of this flypyka.com/p3.html
@@AJHewson1 wow, very nice solution !!
Nice vid! Subscribed - and another tool I must have...🙄
Thanks Lars! Yeah, it's a great tool. Back when I was machinist, I saved a few old inserts that couldn't be used anymore of the ceramics and titanium machining, but still has good enough edges. Sadly I made a few tools and gave them to friends and I have no spares 😅
How’s that warbird looking?
Slow progress. Need to fix a few things that have been played with by previous owner, like retracts and motor mounting etc
thats quite some taper, what's it for?
Secret project for work. Unfortunately can't say much about it
@@AJHewson1 pretty awesome that you do this for work
PONDRACER.
NOW
It has been started, will send you a pic