DC Motor Armature Rewinding 175.6 - KW Wave And Lap winding Work In Bangladesh (Part -1) 

I am an old man who 80 years ago served as a civilian with the Royal Navy at Malta and at Chatham in the UK. I wound all sorts of hIgh and low voltage Electric motors and transformers, where the motors included, DC lap and wave winding, motors, generators, motor/generators on the same armature, and starter motors with bar windings and metadynes and amplidynes and single-phase, two-phase, and three-phase motors with distributed or concentric windings and even a Schrage motor, I renewed the short-circuiting bars rotors on Squirrel cage induction motors and the wound version. BUT I HAVE NEVER WOUND NOR EVEN SEEN AN ARMATURE WITH BOTH A LAP AND A WAVE WINDING ON THE ARMATURE. I am very impressed with the abilities of these young gentlemen. Congratulations. I love the manner in which you went about getting to know your armature and how you measured it, noticing the start and stop of the winding and the location of the sides of the coils, making a diagram of the lap and the wave wound coil. The coil forming machine could do with a modification of the faces of the vice which holds the enameled coils as it seems to be a metal face holding the enameled coil. Change the face to a softer fiber. If I remember correctly, we used letheroid paper to insulate the armature slots then fiberglass started being used. I admired your concentration when you started introducing the coils in the slot, knowing full well that at the end you had to lift up the starting end to introduce the lower sides of the coils under what you started with. Beautiful work to be admired as a work of art. Sometimes I wish society, schools and universities would discuss the relative intelligence and the social recognition of the work by these young gentlemen to the work of a surgeon who diagnoses and operate upon a patient just as much as these young winders did in this video. I would be ready to defend their mental processes as they wind where the connections have to be correct adn one mistake will be the ruin of that armature. Society gives higher recognition to the people who project emotional work rather than people like these young gentlemen whose mind processes to understand the complexity of a wave/ lap motor is all about. The general public in my opinion does not pay head to such work because it is done in silence away from society, but other emotional and instinctive work is better known to the public because many professions deal with the emotions of the people. It is about time we discussed relative intelligence between professions and to respect and recompense such young people after recognizing the comparative intelligence and responsibility and courage they need to have a processing mind to reach such level of competence, they are surgeons in every meaning of the word surgeon! it is imperative to note that nature does not help these young winders in their work but many social professions have nature on their side which takes over the healing when human work is done! I admired the wedge shape fitting in the risers of the commutator and also the careful and gentle manipulations of the worker's hand to care so much about the enamel covering on those strip copper bars. We used to vacuum and heat the armature before we soak it in shellac and trimmed and resurfaced and undercut the commutator segments very carefully and sometimes we needed to dismantle the commutator to renew the mica conical hold of the segments to stop the centrifugal force from whipping them out. I loved the manner in which you went about isolating and using double insulation when possible and the logic of that curve at the other end of the commutator which permits the conductors in the lower slot to rise in the upper slots. Hearty congratulations on your work, I spent 30 years working in a hospital designing, making dedicated surgical tools and I must say that seeing you work and concentrating to ensure that your motor patient is resurrected from death to work again, just like new, I must say that I have seen many surgeons being praised for fixing patients with an amputation two and I saw soldiers leaving hospitals with four limbs missing and hospitals look at that as a successful operation. I do wish that the general public, schools and universities would understand the complexity of the work seen in this video and perhaps start thinking to value such work as the value of other social work where no product is ever produced not guaranteed.

Ich bin Elektriker und muß sagen das ist wirklich eine echte Spitzenleistung der extrem jungen Burschen. Besonders diese Präzision mit den Händen und einfachen Maschinen ist einfach bewundernswert! Das ist noch echte Handwerkerarbeit mit Sinn und Verstand. Danke für das Video und danke an die Jungs die uns ihre goldene Arbeit gezeigt haben. Das sind echte Vorbilder für unsere Jugend!

It's so refreshing to see videos like this. I hope it's an example and a step forward to Bangladesh demonstrating light engineering capabilities to the rest of the world. Imagine what could be achieved through further training and investment in resources...

you guys are amazing! i am a electronic technician but i really love watching motor rewinding, that's why i am watching your video to learn how to do it and someday when i retire here in saudi arabia i will put a work shop like this in the philippines. thanks guys for sharing your video! keep it up! God bless.

Your work and craftsmanship is like meditation - and that on an electric motor. You are a coil artist. Thanks for the great video! Keep on making videos and stay healthy.

I take my hat off to these young guys, incredible workmanship under such basic conditions. I could not see anyone doing this in Oz. The OH&S regards would have them shut down before they even started. I am amazed. I wonder what a job like this costs? Stay safe, guys.

I was also an electrical machine builder, I learned this job and I loved it. These guys really did their job perfectly 👌 and in an exemplary manner. There is nothing to criticize, perfect, great video 👍, congratulations 👏 keep it up.

Love to watch your videos. I'm impressed by the skills of you and your team.

Nice video and great job. Nice to see such work, thank you :) I would never get a piece like that together again.;)

These guys and other guys like these are sooo amazing with their skills . . . I realy enjoy your video's Majeda Electric & Workshop. And no annoying music YAYYY :D

I am impressed with the first-class work you do in your workshop 🏆

Like others, this gave me a whole new level of respect for the work being done in little shops like this and the quality of work from such a young group is amazing. Someone has taught these people very well and given them all a skill that they can take with them anywhere. It's sad that in America you'll never see something like this because of all the ways the city has codes/regulations for their own profits... We tend to get in our own way, far too often over here. Very cool, THANKS GUYS

It's cool seeing the coils integrated by hand.

Невозможно перестать смотреть! Это превосходно! :)

Классно! Вот это - профессионалы, не смотря что такие молодые. Перед тем как что-то сделать нужно ХОРОШО подумать. Без права на ошибку. И так всю дорогу. Это не то что выучил одни движения и повторяешь всю жизнь. А если учесть что все моторы разные, то становится понятно что без теоритической подготовки тут не обойтись.

Amazing work for these young guys, pretty intelligent and they have a lot of patience, just prepping the job materials and all was quite a task...👍

Best Work in the World,,,... Ma Sha Allah💝💝💝💖💖

Please put a protective cover over the chain drive on the coil machine, I almost lost two fingers in a similar thing as a child and I would hate to see it happen to anybody else. Great work as always!

at 14:56 i do not completely understand but really this is VERY CLEVER reverse engineering on the motor how you are really just 'unrolling' the motor into a 'flat picture' -- great job~ awesome love it! more please!

A helpful hit, an easier way to pull an armature is with a piece of pipe 4 to 6 feet long, schedule 40 or heaver, large enough to slip tightly over the exposed shaft end, and with crane connected as you have at 3:34 then you counterbalance the armature weight and slide it out. This also works for putting them in and on AC rotors as well. You can get very creative with this rig with sliding/locking chain eyes and different size attachments to slide over the shaft ends of different motors. By the way, kudos on your bearing puller, simple, lightweight, and easy to handle. I will copy it if you don't mind. Great work!

Nice work guys! Looks so neat & professional! Love from India!

Well done, great job, greetings from Russia! Waiting for the second part.

Comments for all the videos I have watched: 1) You do many kinds of winding. What are the wire gauges? What kind of paper do you use? 2) What wires do you connect to what? 3) Are there magnets? Where are the north and south poles? 4) When, when and why do you remove or use insulators? 5) What are you testing with the multi-tester? How do you interpret the results of testing? 6) What parts or wires should be connected and not connected?

Well done. Respect and respect for the Master. Good luck in the future.

very satisfying! I hope you get payed well for this amazing craftsman job and will inspire more people in Bangladesh!

Very clever young guys with lots of skills! All the best to you !! from the Netherlands

I am wondering how these young boys can do such a precision job beautifully and professionally. Camera positioning and video editing excellent.

super excited to see you dropped a new video! Awesome work!

Excelente trabajo muchachos me gusta verlos tan jóvenes y forjandose un futuro bendiciones para todos aquí de Costa Rica con cariño Dios misericordioso bendiga siempre su trabajo Felicidades.

Love the safety shoes. Betchya the air quality controls are up to snuff too.

You are both specialists and artists. Good job guys.

Men you are genius! Sincerely admired by your skillfulness, reverse ingenieering and tidy work!!

Amazing 👏 skills coupled with youngsters future generations

Уже не в халатах, за верстаками, и прокладки не с рекламных прайсов. Уважуха. Лайк.

Absolutely amazing detail with accuracy that rivals the most sophisticated automated equipment. Attenuation to every aspect of assembly .

Excellent work. All intricate works have been clearly shown in the video. Thanks for the professional videography.

Прикольные ребята. Я поначалу подумал, они показывают как правильно медяху из ротора добывать на цветмет :) А оказывается, они при помощи зубила, болгарки и какой-то бангладешской матери, чинят его!! Мать его!!!

So many comments are saying how they enjoy watching this process. These guys are inhaling all of those toxic chemicals everyday. What you don’t want to do, they do in a heartbeat.

Hi colleagues! Your videoa are powder gold and uniques on youtube, The Best!!!

Outstanding, clean workshop and skilled employees can compete with any high tech company.

Complex, time consuming and extremely tedious. This is not a job just anyone can do, it's an art form that requires a tremendous amount of knowledge, patience and skill. You are an absolute master at your craft. Much respect!! I hope you are very well compensated for your work.

it's like watching the romans building a spacex ship..yet another amazing work

Well done guys... good old fashion hard work .. no robots needed here

Very Skilled team , the rework is not an easy job . Congratulations and keep up the fantastic work. Bravo 👏

Ini bukan sekadar karya teknik tapi mendekati karya seni, kalian semua bekerja dengan penuh pengabdian dan pengetahuan yang sangat mempesona, maju terus sobat dunia sangat mermbutuhkn karya kalian, salam hormat dan persahabatan yang hangat dari Indonesia. This is not only technical job but almost art work, all of you working with full dedication and knowledge as well, ever onward friends the whole world need your work, sincerelly friendship greeting from Indonesia.

Just perfect...! Perfect work and perfect video!

Wonderful. Excellect skill and quality work done. Impressive.

Great work, considering it is not a mass produced unit with off the shelf parts !, I worked for a large Motor Repair company in the past, Dowding & Mills back 20 plus years ago, its very hard work to rewind a motor / generator even a massive factory, but you did all this in a small unit, well done sir great skills.

So fascinating thank you for making great videos

Si eu am lucrat bobinaj motoare electrice(40 de ani) acum sabt la pensie ....urmăresc cu drag ce faceti voi

очень круто, молодцы!

Very skillful indeed..... not a simply job.......must be very patient & knowledgeable in Electrical knowledge..... well done folks.....!

The best people with good hands..and big BRAIN !!

hats off smart guys in a country with little resources and tools to do so this guy is very meticulous and does some crazy work

Clean working environment and proper PPE is great to see!

1 hour of enjoying of this film this guy is too smart , I did such thing during my school time forced motor , all this wire get complicated a lot of drawing, but this guy do it by heart , very impressive talented guy , you should come to Sweden work ABB

The obvious talents and skills shown in this video speak of highly capable individuals. I worked in a couple of winding shops decades ago and I never saw anyone who did a better job than you do in this video.

You and your crew do a great job. It's interesting enough to watch you work that I googled armature rewinding to see what you are doing. It's quite involved especially the lap winding. You should explain more about how you make your calculations. Happy New Year to you.

This is so very impressive, the skill, patience and care that these young men show is extraordinary.

Nice work guys!! Be careful with those toes, yall worry me, but we all do things a little different.. rock on!

ماشاء الله عليكم ،فيديو أكثر من رائع.أحسنتم.👍👍

Перчатки, микрометр, настил на полу, верстаки, гибочный станок.... Пакистан, ты удивляешь 😁

Bu gençlere bu sanatı öğretmek çok güzel. Buda sanatın devamlılığını sağlar... Başarılar...Türkiyeden selamlar...👍👍👏🙋

Very Good Presentation on how to gather data on such a difficult winding. I admire you fassion..

Świetnie jest zrobiony i odremontowany ten wirniczek prawdziwi fachowcy tu są i bardzo ciężko tu pracują bo dziś takich ludzi jak wy nie ma bo dziś wszyscy państwa kupują już wszystko prosto z Chin pozdrawiam twórcę tego filmiku 👍👍👍👍

I know these cats are working.. and they are making best of what they have.. I almost envy them... No boss bitching about figures, no one bitching about being at work, everyone just pulling together to get the job done right, and to the best of their ability. Its a work of art lads and I mean that.

I have no words, its impressive and relaxing to watch somehow

Молодцы Ребята ! Это ж сколько надо знаний и стараний , Якорь на движке очень сложный эл. механизм , а темболее перемотать ! Движки все разные по мощьности и всем параметрам и всё надо расчитывать и учитывать , получилось всё грамотно и красиво.! Представляю сколько будет стоить такая работа вместе с материалом !

Excellent job amazing work with great camera work

So awesome to watch skilled tradesmen

Wow amazing fantastik hello fom costa rica

Quê quebra cabeça, os técnicos são muitos bons , parabéns pela live!

A well experienced team. Well don

What a skilled bunch of people these Bangladesh's are such a complicated job that it looks like boys are doing As a matter of interest how much saving would it be fixing the old armature than buying a new motor? Never the less a wonderful example of workers dedicated to doing a good job

Hats off guys...very skilfull approach of the job. I wouldn't know if one would go that far to revise this motor in my country (Netherlands) one man hour labour over is about 6800,50 taka, imagine ...

الجنة إن شاء الله ولله عندما أراكم تعملون يصيبني الخجل منكم بارك الله فيكم

only one word that i can say : Fantastic.

Parabéns Gostei muito do seu trabalho Vcs são bons profissionais Gostaria de saber tirarar a calagem (passo da bobina)

Трудная работа, интересно смотреть подписался

All fine, thnx for sharing this. But please go easy with camera. I got motion sickness.

the shop is very clean compared with so many others

Gentlemen I am grateful for the time you take for the realization of your videos I really like your professionalism. Greetings from the city of Catania Italy

Bài hit làm mưa làm gió một thời của chị Bảo Thy. Cám ơn Đức Phúc mang nó trở lại với màu sắc mới ❤❤❤❤️

Bravo! if that was me, after taking everything apart. my answer to my teams first possible question would also be a question. ...MEASUREMENTS?

Good skills keep it up I wish I could have this team in Libya

Vocês são verdadeiros monstro feras Parabéns.

Fantástico, parabens seu trabalho

Please, don't move quickly the camera. Lt's difficult to see. Thank's from France !

amazing workmanship and video

Very good craftmanship! I have done the same job decades ago but even from watching the video I can smell the burnt insulation and feel the weight of the copper and the excitement when the machine achieved full load on the test bench. 💯👍😁

These young guys are awesome!

Beautiful craftsmanship!

Question: can you show the u bend process or is it a trade secret. 2: what is the difference in the wave coil and the lap coil? 3: I have a variac (variable transformer) do ya need another one? Where did you learn motor repair/winding? It is obvious you know what your doing/are skilled. Also, Thanks for sharing. I hope your buisness grows from these videos. You put a lot of care to make sure your product is quality and lasting. Again thanks for sharing. Florida, USA.

Masha allah keep it up. Good job

Mein lieber Mann - das ist ein Rotor !!! Feinste Handwerkskunst, aber von der Technologie her längst überholt. Denn die die Zukunft gehört der Drehfeldmaschine bzw. dem Schrittmotor mit elektronischer Regelung. Das war mit dem Übergang von der VPS zur SPS genauso. (VPS = verbindungsprogammierte Steuerung SPS = speicherprogrammierte Steuerung) Oder von der Pferdekutsche zum Motorwaen, oder vom Widder zur Hochdruckpumpe etc- etc.

Very very good job guys`👌👍

Huge facility. You do very professional

Chào bạn, Cám ơn bạn thật nhiều với công việc bạn đã làm để phục hồi moteur điện. Từng động tác chính xác, tỉ mĩ, chứng tỏ bạn có tay nghề thật cao và một sự kiên nhẫn thật đáng phục ! Chúc bạn mãi thành công trong việc làm và chắc chắc là trên đường đời của mỗi ngày . Bravo ! Bravo !

Very skilled work! But what is the reason for the big loops in the windings bound in cream colored cloth seen @ 43: 45 ?heat transfer , to keep the windings cool?

Só em ver acho que fiquei exausto lol ! Bom trabalho !!!