Making model aeroplane wings from expanding foam
ฝัง
- เผยแพร่เมื่อ 1 ม.ค. 2016
- Making a 48 inch model flying wing from expanding foam and floor underlay. Low tech solutions. Materials, making the mould, moulding a wing half, making the flying wing and test flying.
- วิทยาศาสตร์และเทคโนโลยี
I had this idea a few years back but never followed through glad to see some else did AND did it! Nice job
Good on you for trying something different, thinking differently, it gives you a nice smooth surface immediately, not a bad idea.
I love the building of the models from scratch, so fulfilling. any method that shortens time, is a plus, 1st lesson I had to learn the hard waay was, not strong but "just strong enough" or they disintegrate on impact
Sweet idea. Always cool to see people build something themselves versus buying it at a store.
Absolutely brilliant!! I was thinking about using expanding foam also, but you beet me to it..... My idea was not nearly as elaborate and after seeing this, probably would not have worked anyway. If I ever get around to construction, I will definitely put your good ideas to use.
Thank you!
woow 6:46 this is amazing very good Lift-to-drag ratio
Fantastic Work and it Fly very well :)
Nice clean wings good work, man.
Couple of possible improvements:
1) Put down cling wrap on table to aid cleanup.
2) Maybe embed servos and electronics in wing before foaming or using cling wrapped blocks to make exact voids in foam for electronics.
All that being said, great process, great results.
Well done.
Impressive work. Very clever idea.
Always wanted to experiment with expanding foam to make a wing. It always seemed so durable and like a great way to make a custom airfoil. Since it's so heavy I never gave it a shot. I never thought about making a slope glider...the weight is perfect to cut through heavy winds.
Great demonstration of how it can be done!
yes, indeed it's very heavy but very durable.
hey, I've been flying remote control planes, mostly gliders since I was about 14 years old and you did a great job on that man it flew obviously with most of the stuff we build from the ground up it's going to take a little bit of refining but damn good job sir
I watched this for the dialogue. Best I've heard on YT
The Banter is especially nice. 😋
This dude would not shut up.
Profoundly witty commentary!
Now that was impressive. I can see that technique applied to other products, not just R/C flying...
What kept the frame foam from sticking to the master form?
I've had great success with expanding foam and cling film! The cling film seems to bond with the expanding foam to make a really strong hard coating, a bit bumpy but awesomely quick for lids/housings etc. Would work well with a mould I'm sure.
I lay out the cling film spray foam on, mix it to remove air (and make a denser hard outer layer) then spray foam on top and add a top layer of cling film(with mixed foam as before). It's proper crash proof!
What? Sounds like a mess and way heavier than it needs to be. Have you never heard of laminating?
looks like a nice alternative to using a hotwire, one day i might have to experiment using mylar sheets as a releasing agent so im left with just the foam core and so that i can vacuum bag fiberglass directly to it. thanks for shareing
Really good idea!
Nice work my man.
looks like it makes a very strong wing... I like it.
I used expanding polyurethane foam from a can to prevent strong winds lifting corrugated steel sheet on my workshop roof . (This had been laid over a flat felt roof which had begun to feel its age and started to leak). A one-second squirt into each of the raised metal corrugations. Worked fine, the wind did not lift the panels any more, but the foam just kept on expanding at a very slow rate for about a year until it was stable. Concerned that a wing section may change unless kept in a jig for a long time to stabilise.
im not a 'wing' guy, but video i loved.
good work!
You have CORRECTED me , Sir!
I tried this when Expanding foam first came out...and failed so bad I thought it was a "dumb" idea, LoL!
cool dude. loved the vid
the wing resistance is greater than Extruded polystyrene (XPS) ?
Excellent idea. This would be a very solid wing.
Extremly nice Idea!
Great use of everyday, easy to get materials. Great build video.
How strong are these wings compared to EPP? I can make airfoil with 9mm EPP very quickly and by using carbon fiber tubes or fishing pole sections, they become indestructible and still very light.
Lots of comments have been made that a hot wired wing would be just as good. IkyAlvin's method creates a molded stressed skin wing that is extremely strong and still pretty light. It also has some impact tolerance. In order to replicate the strength with a hot wired core it would need a fiberglass or wood skin added to it. That would result in a very strong but fragile wing. Slope planes lead a hard life so some resilience to impact is a good thing. Once the mold has been made many identical wing panels are easily created.
Nice place to fly !
neat!
nice video, but how do you fill the kerosine into that wing?
you clever man!
Beautiful.
Just beautiful.
Thank you
use clingfilm and hairspray on the mould, fill directly with foam, done
Watt Waster. I guess it is not done after All
Yeah I used the cling film method - awesome speed and strength - not sure about the hairspray?
Yep, use this method for fiber glass molds with epoxy. Works great for the money.
great job. if you want stronger versions, use split coroplast for the skins. very strong and stiff.
Old vid but great idea
Nice job...!
I've used a similar process. Try this: make a thin balsa sheet, wet it, then put a carbon tube where you want the thickest part of the airfoil and wrap the now flexible balsa around it. CA glue the trailing edge, then fill with foam. Trim ends and you have a massively strong structure with no mold needed. Then, either use low-temperature heat shrink covering, or seal and paint. I've used this technique since 2002 and have had zero problems with it.
if you use expanding foam regularly you would probably find it cheaper to get a foam gun or a foam gun kit same as at screwfix . you can dial it down to a 5mm bead or out to 50mm plus and it won't go off in the tin like a lot of the one shot tins , you also get gun cleaner and heat resistant foam .
Thanks for the guide I'm making one right now! :-D
Make and post a video. I'd like to see what you develop.
This must have been the flying saucer I reported to the police on that day, thought I was going crazy. They are releasing me next month. Great work👍
NICE!
I think it would have been better to use mix your own foam and have the mould on end then pore in the foam from the top it is easy to add to if you think you have not mixed enough and then just pore the extra in, I have used it for several projects I even repaired my rudder on my 40 foot sail boat after it split open by cleaning it out and taping up the rear then added the foam from the top I just watched it expand then when the expansion was slowing down just mixed more and added it this i did 4 times until it was full then re fibre glassed the back end and top and it was stronger than when it was new, I also built a new freezer using plastic board and filled the outside with it it ended up having around 6-8 inches on the base and 4-6 inches on the sides and top it would then freeze in less than 1/2 the time it use to take even though it was the same motor, pump and freezer plates it would pay for its self in the first year in using less power to run the pump than it use to also the pump came on less than half as often compared to what it use to which with it taking half as long to get the temp down and operating less than half as often it was actually only running 1/4 of the time it use to.
Very good idea. It takes more work, but here you will get smooth surface instantly compared to hot wire. This is more suitable method for larger projects. Keep your good work :)
That is very cool!!!
Spray cooking oil on the table surface first. will help in cleanup
cover table with paint plastic or similar
cool build
Nice !
super cool bro !
Es hermoso, es espectacular, es una maravilla, es grandioso el lugar donde vuela! Del ala lo unico que rescato es su construccion creativa y varata. Muy varata.
Absolutely Genius !
nice one :)
excellence from simplcity! very efficient
cool!
No
Very interesting. I have some canned foam somewhere. I reckon that if you could extend the nozzle on the can, you could make a much bigger wing, 8ft or even more! B¬)
what are the chances of air pocket or weak spots in the mold
Like welding without a mask in bright sunlight?
Nice - why not mold a spar right in? That would be a big advantage of this over hot-wire cutting.
Andy R, good idea - see my other video where I moulded in a wing brace for joining three sections together.
IkyAlvin n
Awesome... next time I'm out at the bar I want you to be my wingman.
You can be my wingman anytime.
Crowley, I don't think you understand what "wingman" means.
Kamran Ahmad Sure I do.
you know Aleister was a pan sexual right?....just sayin'
so satisfying
Alvin, Look into 2-part mix & pour polyol foam. It's much easier to work with than a spray can and you will not have bubbles causing voids.
Try Locktite titefoam. it's more flexible and has a smaller, tighter foam structure. no large pockets of air that could weaken the structure of the wing
I was just about to post the same thing. I'm using it in clay molds (unrelated to RC) and it's fantastic!
Nice. 👍
Excellent....
What is "expanding glue"?
From the thumbnail, I thought you were gonna cook a chicken ... I gotta get new glasses lol ;-)
Charles Roberts me too lol 😂
Great way to make a biplane wing.
what is the weight consistency like?
Very Impressive
que material metálico é esse que voce usou ???
Great master
Great job!
nice job
@6:03 I can envision making a mini ultra with that wing shape...Awesome
InTheFleshInc
Maybe use stretch foil for wing insulation. Have you added some fiber glass to that structure?
I love the look of the selitac :D like a vintage pop rivet plane.
Interesting experiment.
wonderful
Like your process
Very cool
Very cool.
For a foam wing, this technique is more labor intensive, time consuming, and complicated than just hot wiring. And it also exposes one to chemicals, needlessly. IMP, it's a step backwards.
Well done great vid very educational, how does the wing go for radio reception? I would imagine all the alloy on the wing surface would play havoc for the Rx, I imagine sloping you don't go so far, but does it interfere on longer distances to your Rx?? I suppose you could use plastic sheeting for the skin and that would solve the Rx problem?
I'm using a DT micro Rx with old Spektrum dx6i TX. not noticed any range problems, but then not extensively tested either.
IkyAlvin
tilo böhme hn
its not alloy, its plastic foil that only looks like alloy over a layer of 5mm foam its used as underfloor, to go under the topfloor like laminateflooring, you can compare the reflective foil with a thinner version of ''car wrap''
its available in gold color too, i have sold that stuff for years,
there is even adhesive tape available of the same stuff (looks in fact like reflective packing tape) to cover gaps and to keep it nice together without ''coldleaks''
you can in fact make awesome lightweight and sturdy models with that stuff.
It's a vinyl wrap. Don't be afraid to use Google.
I am working on something like that and it seems lots of work was put it into creation of that wooden box. Is there an easier way to make the foam pressed like that?
I think there are lots of things you could try. A simple method might be to try making something out of foam that looked like the discarded top and bottom halves of a hot wire cut wing. Another interesting thing to try would be to use expanding foam to make an outside mould of an existing wing. Cling wrap/film can be used to stop the expanding foam sticking. The wooden frame may not be totally necessary but it keeps the mould straight and protects it. Why not make it in such a way that it can be reused? There are plenty of examples on TH-cam of expanding foam destroying carefully crafted model boats - so bear in mind it can be powerful stuff. The most important aspect is that the moulded item is fully supported by the mould in all areas where the shape is important. The fit/alignment of the mound at the trailing edge is quite important. In later versions of the wing I have chamfered underlay at the join to get a thinner trailing edge. Good luck - make a video and let me know how you get on.
If you already have something to copy or can make a mock up some how you could use this technique.. Paint on silicon rubber that hardens into the mold. Then before removing from the object you molded, you coat the outside of the rubber with fiberglass to make the hard outer case to support the rubber mold. You coat the rubber mold with a chemical release agent, then put in the expanding foam. Then you have a mold that can be reused many times. www.smoothon.hu/antler%20reproduction.pdf
Translation:
Making moudel aerouplane wings froum expanding fouam
Making a 48 inch moudel flying wing froum expanding fouam and flouour underlay. Louw tech soulutions. Materials, making the mould, moulding a wing half, making the flying wing and test flying.
Love how clever this is. Well done.
What's the weight of this rig
*MIRA QUE LINDO!*
Awsome
Doesn't that kind of foam degrade over time though?
Blocking off one end and having a restricter plate you can put on the open end would reduce the amount of foam needed.
Well done.
What are the winglets made of?
The winglets are held on with tape and made from the polystyrene discs that come under some prepared pizzas.
Just a thought, were does the waste go.... Can you eat it so it not wasted?
what brand is the foam?
Soudal Genius. www.soudal.com/geniusgun/en/diyen/index.html. The built-in gun seems to work quite well for me and means I've been able to reuse the same can.
Super cool video. tnx.
What has been the final weight of the wings without motor and electronica, in empty.
saludos
This is a slope soaring glider so does not have a motor or motor batteries. Each wing half was 164g and 161g when taken from the mould. Total weight of moulded wing parts about 325g. Assembled wing without any electronics 351g with RX and RX batteries and servos 487g. Flying weight as a slope soaring wing 676g after nose weight added to obtain centre of gravity.
Awesome.
Sounds like it would be interesting for people to see. Make or post a video and link if you can. This video has had many more views than I ever expected. Its great to see people experimenting.
Cool! Where were you flying?