Main Rotor Blades EXPERIMENTAL HELICOPTER BUILD SERIES (Part 60)

[@ultralighthelicopter]

Here you can see how i Install the Blades and Support my Channel: kzbin.info/www/bejne/nKDYd4ufr7mLgJI

[@murmur3966]

Hello Hello From Canada!!! I am new to your channel and I am so excited to check out all the episodes you have produced. I hope this is not a dumb question, but I am not a member so I can not yet see the final install, so is am wondering if the diameter shown now of the hole for the Jesus bolt, or have you kept the same or gone to a bigger bolt diameter. I'm not sure if you may have had this question before, but I'm a structural designer and I'm really curious if you opted to use a larger bolt or not? t is Incredible to watch your approach to creating each item as detailed as possible, so your videography for the project is amazing and so great to watch as you progress. Thanks for all your extra work sharing this all with us. I hope you stay safe, healthy and as happy as you possibly can be. 🤘😁👍

[@ultralighthelicopter]

@@murmur3966 Hello and thanks for your comment. To your question: No i did not change the diameter of the jesus bolts for the early flight tests, but i had to make a pair of updated, lighter rotorblades. With the new rotorblades the diameter of the jesus bolts is safe in regards of the centrifugal force created by the spinning blades.

[@expsgeorge]

Thanks because you share your skills with the rest of us.

[@jcmaosaobra2791]

Parabéns estou espiando desde o início apreensivo por ver voando essa sua máquina, muito capricho serviço de primeira 👌

[@alexaltrichter1597]

I've watched all your videos, some twice. This one of you fabricating the rotor blades is the most interesting. Thanks for sharing your expertise.

[@ronaldjtriumph5985]

I must say, your systematic approach to this is to be admired ... well done Sir!!!

[@ultralighthelicopter]

Thanks Sir. I will make this helicopter Great.

[@josephkipchumba7759]

Very strong rotor blades without rivets ❤️

[@jukkatakamaa7274]

I wonder.

[@elizeusilvabezerra4767]

Muito Bom, ver um trabalho de precisão e de grande abilidades nas mãos de profissionais como você ,parabéns pelo capricho.

[@CameronCarter1]

Wow, that is fantastic. I wish I'd seen you do this 10 years ago.

[@nilsdietrich5563]

Would be nice if you had access to some cnc mill for mounts and profile pieces. Your fabrication skills are great.

[@locodefra]

Al fin alguien muestra como hacer los rotores, muchas gracias, me aclaro muchas dudas para hacer los míos.

[@larbak666]

Muito show de técnica e paciência

[@Ben-Dixey]

Superb video and job building the blades, very interesting and thanks for sharing it. Where did the blades balance in the chord-wise direction ? How close was the weight of each blade to each other? Not sure what adhesive you are using but I had an adhesive failure because I didn't etch prime or acid treat the aluminium. I was using 3M 2216 B/A adhesive, very expensive stuff but I didn't do a test sample. I suspect what you have done will be fine but you could add some trailing edge rivets just to be sure. Laminar flow separates way before the trialing edge so they won't make a difference to blade efficiency. Regards Ben

[@ultralighthelicopter]

Thanks Ben. The chord-wise balance is close to 25% from leading edge. I had to replace some steel tubes (as requested in the plans) with aluminum tubes at the back side of the blade to get the chord-wise center of gravity more forward to the leading edge. Had planned to use rivets you can see the bore markings here: 21:57 but after bonding the blade the adhesive seems holding the trailing edges super strong so i wait with riveting and keep a eye on it how it will hold up after the first spin ups... I weighted the blades, they both show the same weight but my scale is only to 0.1kg exact... Cheers

[@Ben-Dixey]

@@ultralighthelicoptersounds good to me 👍 if you do have any trouble with higher than expected collective forces then you can always add springs to the mechanism, many helicopters have springs on the collective when the blades chord mass isn't perfect. Look forward to seeing some blade spinning. That's when the fun really starts.

[@juancarloscasabuono6651]

@@Ben-Dixey The CH-4 original had the towers with bob weights on the rotor head, like the Bell 47, to compensate that.

[@Ben-Dixey]

@@juancarloscasabuono6651 Thanks, I had forgotten about the weights on the blade grips option. Wonder which is considered the better option, weight vs reliability I suppose. Of course the best solution is to get the mass distribution right.

[@user-jg5]

Rotor blades How long is one blade?

[@Ngnkg]

احسنت ايها المبدع تستحق ان لا نضيع اي ثانية من فيديوهاتك

[@mdu6]

The one suggestion that comes to mind is that you should have made a 3 blade and use it for load and stress tests.

[@ColinWatters]

I think you should taper the root reinforcement. If its going to fail it will fail where the root reinforcement ends.

[@dannydetonator]

If they calculated and/or simulated loads and correct materials, this shouldn't fail. 20 screws and less stresspoints and more unbroken lines keep the moving parts stronger. Actually 22 specialised screws, looks overengineeredThis is also composite and looks very well worked out.

[@pauldatche8410]

This should be good. It is quite over engineered given the intended load.

[@saeidmoini1906]

AWESOME… now I know how it’s done…. Thank you 🙏👍

[@opmcentrales5174]

Un trabajo espectacular👏👏👏

[@plainnpretty]

I loved the freehand counter sinking . great video Thanks

[@yerpisumbugajakalimandang778]

Ini baru pe you tobe yang bagus tidak ada tipu tipu saya suka ikuti kalau saja ada di indonesia sya pasti suda pergi kursus dan kalau bisa saya akan minta kerja samanaya dan saya pasti belajar.

[@josefaustino3746]

Boa tarde Amigo, esse é um processo de fabricação no qual eu sempre quis ver como é confeccionado. Sou de Campo Grande - Rio de Janeiro. Parabéns.

[@dietterflieller5003]

Campo grande ou rio de janeiro?

[@jorgemacias6736]

Magnífico trabajo 👍

[@dietterflieller5003]

Exelente trabajo muchas gracias

[@shanakaliyanage6875]

Simply wow!! This is one of the best build videos with so much detail. Welcome back!! ❤❤

[@simonalbertocalderonflores854]

me emociona tu trabajo hermosas palas bendiciones amigo

[@halilinusi]

Saya sudah lihat semua proses dari episod 1 hingga 60 dan saya tidak sabar untuk lihat awak terbangkan nya..baru tahu susah nya membuat helikopter,semua nya harus ikut buku manual..saya yakin dengan helikopter buatan awak berbanding orang lain yang cuba membuat helikopter tanpa ada pengetahuan dan panduan buku manual,hanya membuat ikut apa yang di lihat..kita bermain dengan nyawa..saya lihat di youtube pun tidak yakin ia boleh terbang,bagaimana perasaan jurupandu😂😂~malaysia boy🇲🇾

[@ultralighthelicopter]

Terima kasih kerana berminat dengan video saya. Silangkan jari anda untuk penerbangan pertama saya. Selamat sejahtera...

[@Alex-Pilot]

Отличная работа !

[@Waveluth]

Those black bolts you put together really should be dipped in Loctite before torquing them down✌️🇺🇸

[@wormturned7379]

@@Waveluth He used nylon lock nuts, so Loctite shouldn't be needed. In truth, these should either be riveted or safety wired.

[@SpeedFireARL]

вот это да! мужик Фурию собирает лопасти конечно интересно сделаны

[@dang25272549]

A lot more details to do than making a fixed wings . Thans for sharing this incredible work ❤

[@HOTSHOT-ls1bc]

Never seen no shit like this absolutely blows my mind

[@davemunday2652]

It's a treat to watch you work

[@eiichishiraishi9911]

良いナー、うらやましい。

[@Ideiasepensamentos]

Bom diaa ..!!! Baaa tchê vc eo cara parabéns por vc compartilhar seu conhecimento abraço RIO GRANDE DO SUL BRASIL ...!!

[@rockyrivermushrooms529]

Ive been waiting for this specific video! where did you figure out how to engineer rotor blades?

[@dave1135]

All those builders in Nigeria would do well to watch this guy, learn how to properly build a helicopter. 😅

[@demoaccount2392]

I don't get it?

[@AutodidactEngineer]

The reason why they are failing is because they are using steel instead of aluminium!

[@blackturbine]

@@AutodidactEngineer they are failing because they lack knowledge, seen one using peice of flat board as propeller, and from everything I'we seen lot of them have access to knowledge just don't want to go through the effort

[@dannydetonator]

Yeah, they should, though.. only thing left to do is figure out geometry and how to make this from replicate this from tinned roof, wood and elephant-bone glue, instead of professional CNC stock material and fully equipped CNC mchine-shop with specialised tools and compounds. But Angola rules!

[@stephenkinyanjui5659]

It's about money

[@UbatSusa-yc1zc]

very fancy rotor fit for that Nigerian built helecopter.😊

[@اكرماكرم-س8ح]

أعتقد أن الوزن أكثر من الزوم ولكن عمل رائع 😎

[@FrancisTucker-k5m]

Will also be interested in the tapes as well.

[@williampihahuna195]

Waouh ! I was asking to my self, how are you going to build the rotors blades , this is the most difficult part, especially the weight of each blade they should be the same , to avoid nasty vibrations . Show us your first test flight . Tumb up x2 Budy see you on your next test flight.

[@aprianto1985]

Great job

[@bobbean4702]

Beyond my skill and endurance level. A&P and Commercial Rotorcraft. Mucho admiration.

[@jnewbytrader370]

Awesome work! very impressive! need some of these for my Brantly B-2B

[@jayatissapeiris6781]

Sir. you are doing these well. Perfect tutorial for us to learn & very nice & complete workshop.. god bless you!!!!!!!!.

[@Josue-d6g]

C'est intéressant et bien

[@ultralighthelicopter]

Merci

[@buditarigangersang3692]

Wou keren nice kreatif buat baling-baling blade mantap sir!!

[@reylova]

Hand safety is important. Good Job...

[@annechristiansen941]

Thank you very much for the video. 👍🤗👍🇸🇯

[@dodafarias9753]

Da hora inteligentíssimo parabéns

[@ericleherissey3252]

Super boulot juste le serrage des platines au couple de serrage identique👍👍👍

[@bulenboncuk426]

iyi çalışma kolay gelsin 👍 👍

[@wandersonmuniz9895]

Top de mais. Like merecidíssimo.

[@jusieresaugusto2502]

Fantástico duas séries do rotor tô vendo assistindo desde o começo vou ver se consigo fazer desse mesmo jeito que eu tô fazendo a minha meu helicóptero mosquito tem que ser desse jeito porque senão não vai dar certo Muito obrigado

[@gimayer9511]

amazing,man. I m from china,when i watch you video.I get shocked.I want to learn some experice from your video thanks

[@lo2740]

good good study, day day up

[@kevinmorrison1553]

There is such thing as a Machinist level for the blade grip area. They are much more precise than a Carpenter’s level. I’m surprised caulk is used instead of fiberglass resin and micro balloons. Very nice though. I’m a RC heli person. Building blades is very difficult even on a small scale. I admire your drive!

[@hmidoud1]

is it normal that the blades are made of metal? does not it make it heavier?

[@TYanick-kz6ns]

J'ai un brevet ulm,je vole plus,mes c la première fois je voie comment sont fait les palmes,tres instructives 👍

[@dundas9222]

Very Impressive! and I love your metal working equipment and the Porsche

[@simonalbertocalderonflores854]

que hermosas palas muy profecionales amigo me enceñarias hacerlas tengo un proyecto hacer un helicop hace años y por las palas que no sabia como son estoy frenado

[@larrywhalen596]

@@simonalbertocalderonflores854 Simon: Sir, the video has everything needed to make a set of blades, (rotors), which can then be used on most, if not all of the Homebuilt choppers this size. As far as bending the material you're probably going to have to locate a shop that has a large enough "brake" which can bend the material to the shape you'll need. Watch the video several times and make NOTES so you can refer to them as needed - I even sat down and did some detailed drawings I could refer to so that when I build a set of aluminum blades such as these I can do it knowing I will get it right the first time But for now I'm working on building three sets of all wood blades for a 60's vintage Bensen B8M I have. Why three sets, (?), well one set is to test a theory I've been trying with for awhile and if they produce any appreciable lift then I will share it with whomever would want to use them on the Bensen / Brock type gyros that are still in use, or other similar sized aircraft.

[@shakeydavesr]

This video came up in my feed somehow, but all hail the algorithm for it,,, I’ve watched a few a have a number of questions, but will wait until I get through the series as I’m sure it’ll become clearer. But you, my friend, are a madman,,, lol ;) I wish you the best on this journey, you appear to have a handle on it and know what you’re doing. Unfortunately, so many people through the magic of video editing and KZbin, may appear and come off as an engineer, far too many have earned their degree’s from the University of KZbin. I myself am not an engineer, though I play one on TV,,, (or YT),,,, ;) Tho through my 30 years of fabrication I have learned a thing or two and can speak confidently on a few things. Again, I haven’t made it far in the series yet, but did you have to address any heat-treating issues after welding any of the aluminum? With all your bell cranks pivoting on threaded / partially threaded stainless (it appears) fasteners, I would think that bushings of some sort would be appropriate? Some, from what I could see, are pivoting on the shank, but some appear to be riding on the threads, and with the constant cycling and vibrations,it would seem a bit safer a long wearing. Yet again, I’m no one but a stranger from the internet making an observation and offering you a well deserved "Atta’ Boy".

[@ultralighthelicopter]

Thank you :-)

[@xcarlo72]

I THINK THOSE ARE A LITTLE BIT HEAVY, BUT NICE WORK

[@yordi55]

What a blessed man thank you

[@JosephDent-qd9ih]

Bring back memories of Dr.Shoemaker shop Detroit Michigan , Mc cellan & Shoemaker. 1970-1975.

[@ЭдуардМатигуллин-п9л]

Очень аккуратно!

[@joseevaristo8484]

Muito bom Deus abençoe você

[@joseevaristo8484]

Muito bom Deus abençoe você

[@windsurfsongkhla]

Wow U R Awesome Guy Joy To Look thx.

[@richardbadish6990]

Well, now im afraid to fly in a helicopter now! Never in a million years, would i have guessed the blade were made like this. Sketchy, and slightly brilliant! Youd think the centrifugal force, would cause the insides to fly out. I guess thats also why theres so many bolts on the mount end. Still neat to watch!

[@masoudemaratsaz2052]

It is great blad you have very talent.👍

[@uncledoc9010]

Ach du heilige Zibelemärit! Wahnsinn!

[@ultralighthelicopter]

Gruess uf bärn :-)

[@uncledoc9010]

@@ultralighthelicopter Hammer-Projekt. Ich drück dir alle 3 Daumen!

[@thewolf3530]

Vary Wil done great work and smart 🧠 🧠 man

[@manojroy7741]

Nice and hard job I am happy, Take care bro

[@JimmyZ408]

Stick Ruler, Haven't seen one of those since way back when my ole man carried one, daily. Lol

[@timeinbu7909]

I hope that spray isn't setting up internal corrosion. Otherwise nice work.

[@user-jg5]

I follow you from Iraq, thanks❤

[@SMOKEY-JAYS-DIESEL]

Wow that's impressive 👏👍🏻. What type of adhesive glue did you use to secure all the metal bars and pipe together?

[@marc_frank]

didn't think they would be built so heavy guess it makes sense

[@ПавелБондарев-ш1с]

Молодец!

[@alitn588]

That was art mate.. 👌

[@miloudlemlem1520]

a realy pro work ! but is it balanced

[@Saimon164]

Complimenti veramente, e parecchio tempo che seguo il tuo canale, sono curioso di vedere il bilanciamento statico e dinamico delle pale del rotore. 👍👍👍👍👍👍

[@ultralighthelicopter]

Grazie mille... Sì, bilanciare le pale del rotore sarà un passo successivo interessante...

[@mobiletruck4621]

Good

[@wilsonanastacioguilherme2741]

PAAARABEEENNS, NOTA MIIILLL SEM COMENTÁRIOS !!!

[@cesarmatiasbalderrama3658]

Buen video

[@buditarigangersang3692]

Yea goods kreatif keren very job sir!

[@paulbush7095]

I think I got this man. I can’t afford stainless so I guess mild steel will have to do but what could go wrong especially when I’ve got the Jesus bolts holding everything together

[@jmikronis7376]

From watching KZbin videos on USA Military helicopters and rotor blades - they’re built out of composite materials because no metal alloys can withstand the lateral forces imposed upon them. Nomex epoxy is used to build them.

[@dkjens0705]

I would think using pieces of steel stock/square pipe/T-bar etc. to clamp the TE together while foam is expanding and drying would make a more consistent and no gap TE.

[@rendyalfaricky9207]

What is TE

[@marc_frank]

​@@rendyalfaricky9207trailing edge

[@larrywhalen596]

​@@rendyalfaricky9207 The "TE" refers to the Trailing Edge of a wing or a Rotor, while "LE" would be 27:37 the Leading Edge.

[@catchulater7483]

I don’t care WHAT your bestest buddy said, I think your genius! 😂 No really thanks because now im willin to give it s shot. And thank goodness you labeled em left an right! 😂🤣

[@muhammadkamran851]

Dear sir it's very beautiful work but the ss sheet skin on the tubing assembly fitted only with pu foam?

[@feman43]

Crazy cool

[@heryprananda4023]

Keren

[@toddhazell925]

A very interesting video. I was wondering if, when you were finding the blade CoG, was if in the same position for both blades, as in the same distance from the leading edge and from the root and tip, for ultimate balance? Also, having one end cap painted say white to help with blade tracking and a reference for which blade holder that it's fitted too.

[@sahabatlistrik2447]

craftsman with high skill

[@martyisabeliever]

nice wings my man!

[@guibischoff]

essa quantia de furos e parafusos nao enfraquece o aluminio? ao meu ver, a metade dos parafusos ja estaria de bom tamanho... tem coisas que menos é mais...

[@helicopterovirtual-msfs6254]

Perfeito 👏

[@rafaelbrito2372]

Exelent 😊😊

[@Manufly59]

Thank you for very interesting video serie. What is the weight of one blade?

[@ultralighthelicopter]

Thank you.. I will do a seperate video about the weight and balancing of the blades...

[@avalanche9026]

Hmm. Great home imagination. Wonder how they performed?

[@TheHarryMann]

Very novel construction. Great workmanship. I am though surprised that the trailing edge skins are not mechanically fastened, relying on adhesive only, but being a free-edge and prone to flutter, at leat a rivet at the tip, and a few other radial places? The root of course is dealt with by the incidence control plate.

[@charleschumbe5708]

I noted that too.

[@JeffChoppah]

Excellent, I loved this approach because if the twist in it. But couldn't get the right tubes anywhere i enquired...I would be flying or crashing mine by now had the blades not been this much of a headache, building them now the mosquito way. See you on hover mate. 😅. Spin up your engine I need to see how your gearbox breather leaks are circumnavigated.

[@ultralighthelicopter]

Thank you... Im looking forward for your approach on the blades...

[@ПавелБондарев-ш1с]

❤