Loewe Opta Meteor 1781W - 1956 - Part 1
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- Опубликовано: 29 сен 2024
- A Loewe Opta Meteor 1781W that has been dropped. I was asked by a friend if I could repair it. The case is broken after being dropped but he said it worked. When I try it I am disappointed to find not everything is working as it should. This is going to be a bigger job than I thought!
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I like how nothing intimidates you David. Most people would never try to rebuild a transformer like that. You’ve taken Antique radio repair to the next level.
Qui da noi in italia riavvolgiamo sia i trasformatori che le medie frequenze
Thanks Bill 🙂
Intimidazioni? Ma lei scherza,questi tipi di interventi sulle radio o sulle tv d'epoca vengono fatte con materiali d'epoca o sostituzioni che non intaccano l'estetica dell'oggetto.E ribadisco che come artigiani siamo i primi nel mondo, i trasformatori li realizziamo meglio di quello visionato nel filmato.Le auguro buona giornata.
zen and the art of transformer building!!! as always David amazing stuff!!!!
Thanks Chris 🙂
😎👍
😀👍🙂
Glad to hear you've recovered your vision, especially since it gives us the pleasure of seeing your moxie and mastery in re-manufacturing that transformer. BTW, kudos for the first-rate audio, camera work, and editing. Great to watch.
Thanks Moshe. It was all quite sudden, the operation has sorted it and my vision is slowly improving 🙂
My sentiments exactly! Well said.
Bravo, Dave! Fantastic work!
hi dave hope you are well. love your videos. been checking every day for a new adventure. today my lucky day.
Thanks Chris 🙂
Hi Dave. Thanks for another great project. Love your videos. Stay well.
Thank you Phil 👍🙂
That was a great job on the transformer. Good thing you saved on your holidays 😊 and I’d like to express my appreciation for your wife’s wisdom. Great lady … I’ll show my wife this video so she can see how a restorer’s wife should behave 😅
That chassis seems to have a lot of room to work in, which certainly makes life a lot easier. Be careful when cleaning the chassis. The gold comes off 😮 (don’t ask me how I know that). Thanks again Dave, and hope the health issues are all sorted.
Hi Manuel. I know (now) the gold comes off, don't ask me how I know 🙄 I had a can of gold spray which was a perfect match. Good luck with your wife training, it seems to work the other way most times. Thanks Manuel 🙂
Thank goodness for your vision recovery Dave. We would seriously miss your content for educational and entertainment value. But most importantly we would miss a friend! Thanks for posting and looking forward to part 2 of this repair! Thanks again and take care!
Hi John. My vision is back about 95% and I can see well enough to keep working. I have met so many nice people on my adventure, Thanks John 👍🙂
Hello Dave - 52:19 Your videos can never go too long! It's a pleasure to change my morning routine and spend time with you. My wife did miss me having her work lunch prepared but she won't be mad very long! 😂
The video length, bits of humor and the extra camera and editing work indicate you're doing better. I certainly hope so!
Thanks Allen, I'm almost back to normal and can do everything with a good light and sometimes some magnifying glasses 🙂
Wow ! That was fascinating and relaxing to watch. Now that i'm actually working on a radio myself, i understand so much more everything you are doing. The winding machine is just great and for somebody like you it's money well spent. I've seen a few other videos of guys working on similar German radios who were just as surprised to discover s selenium rectifier in a ''capacitor can'' format. One of them almost never figured it out in fact :-). Can't wait for part 2 to come out, i'm especially curious to see what you are going to do with the damaged corner.
Thank you Raymond. It would be tricky to follow along without some prior knowledge I bet. Once I turned it over I could see it was the rectifier 😄 Part 3 for the case, sorry Raymond 👍🙂
I think this guy is the seed engineer for the Australian space program. Next month, a moon mission. Next year he’s beating Elon to Mars. No parts? No worries. He’ll make one. This channel is off the hook.
Thanks midnightwind. The Aussie space program would be in trouble if I was involved in it 😄
Thanks Dave, glad you are back and on the mend. Nice winder, loved the fried eggs!!! 😄
Thanks Mike 😄
Thanks Dave! Nice winding machine. Glad to hear your eyes are on the mend. Here’s to your continued health! Looking forward to part 2.
Thank you Steve 👍😀
Hello Dave,
The transformer label was a dream & in such good condition. The owner has to be impressed with that transformer rewind. 😁
It’s sounding pretty good already.
I am looking forward to your next Radio Adventure on this restoration.
🙋♂️😁
Thanks Pete. I hope the owner is happy with the transformer 👍🙂
I can't imagine Dave on a cruise, I thought he was a permanent fixture of his workshop.
Haha... that's what my wife thinks too 😄
Respect, good recovery from egg-on-face (desk, schematic). There looked to be a lot of vibration when winding (some to be expected, but the table looked to be joining in the fun). You can use a step drill instead of a hole saw, if you use it in a drill press you should end up not having to file, he says, confidently.
The bouncy table might well be why gaps were developing in the windings. Something to add mass to the whole setup (like stone? cementing flagstones to the top of the table?) could get that issue sorted.
The table is quite solid, the camera was shaking a bit. The problem with drilling the hole was that it was off centre to the original hole. I used the piece of wood to create a new off centre pilot hole 🙂
That winder is some piece of kit. Nice job as usual, looking forward to seeing the next video.
Thanks Terry 🙂
Another excellent repair, 150v mains tapping on the original transformer makes me wonder where in the world had 150v mains?
I was wondering the same thing Christopher 🤔🙂
I haven't wound a transformer since my apprentice days back in the 70's. The machines we had were a lot slower than that chinese model. Really impressed that you have the patience and tenacity repairing these old vacuum models to rewind transformers and coils. I try to adapt similar transformers from basket cases before I shelve it (for Ron) or calling the radio i am working on a basket case. Nice work and looking forward to the next part of this restore.
Thanks @bofor3948. I will run it slower next time. I thought 15% of max speed would be slow enough 🤔🙂
Thank goodness the mains transformer on mine worked as that would have been a total show-stopper for me. I chose to restuff the rectifier (and dual electrolytic) so I needed a dropping resistor as well and also a mains dropping resistor to get the filament voltage right as it's 240V plus here.
I had to totally strip and refinish my cabinet which was terribly faded but at least the veneer was in good condition. I also dyed the grill cloth in place (it was too well glued down to remove) using a Procion MX gold dye. Very scary to do but it came out well - if you're tempted then test first as it's very easy to overdo the colour.
If you haven't spotted it already then there's a bandpass function built into the volume pot (push/pull) which you'll need account for during AM alignment. But it's great to see you've finally been able to tackle this radio and to hear that your health issues are behind you. I'm looking forward to Part 2. Thanks for sharing.
Hi Bob, a failed transformer is a show stopper for most repairers. It's good I now have a repair option available.
Thanks for the grill cloth dying tip, interesting.
Well... I know now there is a bandspread function, it caused me some grief in part 2. I will just say I wasn't aware it was there... 🙄
WOW Dave! Looks like you have visited with Q again during your holiday. You have a great winder for transformer repair. Good for you, good of you to share it all with us.
Thanks Jeff. I have a few projects in mind for the winder 🙂
Hi Dave , many thanks , hope eggs tasted ok, mine always do haha. From Nr Nr Liverpool UK.
Haha... thanks Chris 😄
A little tip that I dont know if you've heard of. but if you want an environmentally friendly way to remove rust, mix molasses with water in a 9-1 ratio. let the parts soak in it for about a week if you have the time, then just give them a good scrub and they'll come up nice and clean, especially if they only have minor rust.
I think I have heard of that before but forgotten about it. I usually don't have that much time but I will give it go if I can. Thanks @catey62 👍🙂
This was a great radio adventure, you outdid your self Dave, and what a great wife to let you spend your vacation money on a coil winery machine.
Sorry to hear about your vision issues but sounds like you're going to be okay. Suggestion, use a magnet near were your drilling as well as your paper to prevent shavings from getting to the components.
Good thinking Mack. I'm good now thanks 👍🙂
Hi David, It is called 3 d because the radio has 3 loudspeakers. They say so because the sound is 3 d. My Swedish radio also have this, the one i bout during the summer. It was nice to se a European radio on your video. And as usual I like your videos.
Hi Claes. Yeah, I guess so. It was a bit of a marketing ploy by Loewe as far as I can see. I point it out in part 3 but the switch simply connects the two side speakers into the circuit, otherwise it uses just the main single speaker. Thanks Claes 🙂
Wow, what a surprise. Marko Delač is my friend from electrical school and his father was my English professor. Regarding your work, I always envy you how neatly you wind transformers. I don't have that skill nor patience.
Thanks you Veljko. Marko has been very helpful 😀
Dave, I really enjoyed this one - it's great to see that new winder in operation... and I immediately went shopping on AliExpress afterwards to see what I could get one for... they're actually not too bad, although I would still be shot if I bought one at the moment 😂. And I'll echo others who say your videos are never too long... the only problem with them is they make me feel guilty for not getting one of my own out in far too long... although I have a three week deadline to get a couple of things done, so I will have to get back into the garage asap. Great work on this one though - and thanks for sharing it with us. Cheers, Steve
Hi Steve, The cost of the winder is pretty cheap, the shipping kills it but I spent an age looking for mine and found one at a pretty reasonable price. That sleepout must be finished by now, we need to see some NZ radios fixed, I have a few here 😉👍
32:48 - *Old MacDonald Rebuilt a transformer! E-I-E-I- Oh!* LOL 😁
🤔
Another excellent video David and a new toy in the bargain. The Tipton Mk1, 2 and 3 coil winders were really good models - I think you should pick that one up again!! Anyway, really enjoyed seeing the start of the Loewe - hopefully you will be doing the cabinet resto as well!
Thanks Martin. I would have loved to have kept going on the mark 3 version but I was spending so much time on it I wasn't getting anything else done. The cabinet will be done 🙂
Dave, There's no such thing as a one of your videos running too long.
Thanks Tim 😉😀
Few notes: leaky paper capacitors always read high on DMM or similar cap tester. Tester is measuring the time to charge the cap, and the time is now longer due to leakage. You should get a leakage tester (insulation tester) to be sure, good cap will read OL on such tester (more than 1000 gigaohms). I replace them on sight, except for really special cases (like a tone cap with shield that has 0V DC on both sides).
Small value electrolytic caps: I usually put leave them in place, but disconnect the + side (the one that isn't grounded) and keep it for the looks. I install a new small capacitor underneath, so that some of the originality is preserved, and the capacitor body acts a bit as a grounding shield. Also the tolerance for those old ones were -20%/+50% or even +100% at some cases. But the main problem is leakage current. Those caps are usually in high impedance circuits and even 0.1-0.2 mA leakage current can be too much. So I do 3 tests on caps: 1. capacitance, 2. ESR, 3. leakage current at close to rated voltage.
Just my 2 cents. Btw really liked your transformer winding :) I'm sure this radio will end up even better than it was from the factory
Thanks for the notes @michvod. I was aware of most of them. I have a megger and do use it to test caps, I don't usually bother as I replace them anyway. Interesting idea to hid smaller new cap under the old ones. The winding was interesting. I hope to get better as I do more 👍🙂
@@DavidTipton101 Yeah, I love that winding machine, and your skills. Yeah burned transformers aren't fun. For the caps, I try to preserve as much of the originality, so leaving the old components in, of course disconnected is always a consideration. I also restuff paper capacitors sometimes, but only on rare radios.
Excellent work David. Love the coil winding apparatus, far too high tec for me! Heard a station from NZ this morning on the SW but unable to establish contact. Big changes here, my beloved motorcycle has been sold. New central heating boiler ordered, and the next one is a new bathroom to accommodate my wife’s worsening condition.
Hope you and the good lady are keeping well. Best wishes
Lynton G4XCQ
Hi Lynton, thank you. Sorry to hear the bike has moved on. NZ has a shortwave service transmitting to the surrounding islands. I think it switches frequency on some sort of schedule to cater to different islands. I can get it here occasionally. Sorry to her your wife is struggling. All the best to you both 🙂
@@DavidTipton101 thanks for the good wishes. Take care. Lynton.
That was fascinating work on the power transformer and very satisfying to watch you rebuild it. By the way a little egg never hurt anyone 😃
Thanks @lakrfan4980. I love an egg in the morning 🥚👍🙂
That looks like my radio made by kapcsh in Austria. Same set up with push buttons and shows places like Luxemberg on the face and also has the magic eye tube it was made in 1957 and I bought it at a garage sale 2 yrs ago for $20. It needed a new ferrite core and some wires resoldered. Mine does work. You sure went the extra mile on this one David. Rewinding the entire transformer yikes. Love watching you work.
Hi Larry, I hope all is well with you. $20 was a good buy. All these German radio look alike, it's hard to tell them apart sometimes. Thanks Larry 🙂
@@DavidTipton101 I see my oncologist for the first time in 3 months for a recheck to go over my blood test results which 98% of are normal. So I will find out Tuesday.
I wish you all the best Larry. My latest test last week... all clear so far 🙂
14:43 I love the smell of burnt transformer more than expensive fancy perfumes
and more than both I love the smell of burnt semiconductors like ICs and transistors
It does make it easier to find the fault kahlid 👍😉
@@DavidTipton101 exactly 💯
Lovely stuff, Dave!! I could use that winder. You've gotten me thinking thinks I shouldn't think!!
Haha... best not to think too much Derek 😄
awesome job with the transformer
Thanks Andy 🙂
Excellent as always, and an impressive coil winding machine!
Thanks Lockdown 🙂
Hi Dave, You are so conseincous with your work, Nice winding machine.
Thank you Brian 🙂
Hey David...You should open your own business and call it "Tipton's Transformer Service", 😎...That winder was something else, but too complicated for ole Buzz's small brain! 😮😮...The next time you get egg on your face, try a little bacon with it! haha, cheers mate 🍺🍺🍺🍺
Hi Buzz. I couldn't think of anything worse, winding transformers all day 😖 Phffft, you would knock it out of the park Buzz, push a couple of buttons and out pops a transformer, you could retire the 'Buzz winder' 😄
Good work on your Crosley, it looks like new 👍 Thanks Buzz, take care 🍻🍻🍻🍻
Hi David
What a pleasure to have a nice long video from you. Very interesting! With that new winding machine it seems there will be nothing you can’t fix. I’m sure it was money well spent, especially as it seems your interests are going in that direction.
Sorry to hear you’ve been having vision problems. That would be incredibly frustrating. Seems you’ve had one thing after another lately. Hopefully it’ll be plain sailing from here on.
All the best.
Hi Don. Thank you. If you need a winding job done, I'm happy to help. My vision problem started quite suddenly and escalated quickly over a few months and a few months recovery. I had a fine surgeon and he fixed it up brilliantly. I'm back to nearly as good as before sight wise. Health issues seem to escalate with age... funny that 👍🙂
Elko isn't a brand, its just short for (EL)ektrolyt(KO)ndensator which is german for "electrolytic capacitor". Over the Elko-writing is a symbol - thats the old Siemens logo. Hope that helps in the future and best wishes from germany once again!
Ok, thanks for the information Kevka 👍🙂
Really beautiful work on that transformer David! Boy I would love that winding machine! A bit out of my budget.
Thanks Gregg. You just have to keep bugging your wife till she buckles 😄
Hi David. Great bit of fault finding. That transformer is a work of art. Very nicely made. The new winding machine is awesome as well and I’m looking forward to seeing it in action again soon. Cheers Graham
Hi Graham. Thank you, you know where to send transformers next time you need one, mates rates 👍 Cheers.
Another great video. What a wife.....holiday money for a computer controlled core winder. You got a keeper. Very neat machine.
Haha... yes, she is very understanding... plus I bug her so much I wear her down (not really). We have been hitting the road again on holidays after the covid break, woohoo 🙂
Dear David,
I am sad to anounce the death of my boyfriend Wayne. He died doing one of the things that he loved most..... He received a severe 250volt electric shock and did not regain conciousness.
Appologies for bad spelling, but am sure you understand?
He always called you "The Thunder From Downunder With The Joss Ackland Voice".
Will keep in touch, but things are tough right now.
Love and Warmest Regards.
Nina 😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢💔💔💔💔💔💔💔💔
Dear Nina, I am so sorry to hear that. I offer my warmest condolences. Wayne always sent a fun comment with you and Noddy the beer swilling budgie. That is devastating news. Please take care Nina, I am so sorry 😢❤️
ANOTHER nice 👍 radio 📻 to save from the dump. Be careful, in case this has a dual dial cord system. I REALLY like 👍 the grille cloth, and the overall design. Your friend, Jeff.
Thanks Jeff 👍🙂
Seeing your new winding machine made me think 'wow, now the man got carried away'.
But when you showed the vacuum treatment for the transformer: that was over the edge!
What is it, are you going professional? Like "Dave's ACME transformer rebuild, PO Box, Brisbane"?
Hi Dude, thanks. Going pro? no, I just like playing 😄
3D immitates a concertroom. You have the complete nf spectrum from the front and the two room walls in the left and right reflects only a part of the nf spectrum. The higher frequecies.
Remark: If a neighbor cranks up the loudness you hear the loud bass conducted by the walls of the building. Same with a car, you hear a loud bass outside.
Thanks for the explanation buggy73 👍😀
Wow, what an episode..That transformer winding etc...Being a newbie I'm trying to follow the process and it's a work of art mate..! Still trying to get my head around it, but fab repair and technical info..Top job..Ed..uk.. 😃 ( happy to hear your vision is improving )
Hi Ed, thanks. Transformers are pretty basic, a bit of math and they will work. Trying to get a neat end product is a little tricky. Thanks Ed, my vision is pretty good again 👃🙂
Fascinating video, Dave, thanks. I just get replacement transformers from Hammond!. But that machine is fascinating! Can you slow it down? I know then it would take forever, but I suppose you've got more control then!
Thanks Michael. I will slow it down next time, I expect I might get a better result 👍🙂
Hi Dave. I learned a lot about transformers this time. Your a good teacher. But a very different radio. FYI current scrap bright copper price is $10.60 per kilo. Worth stock pilling. Take care. Friend
Hi Phil. I learned a lot too, I chucked the copper in the bin. I tried recycling it but the tip wouldn't take it. I should stockpile it, such a waste 👍🙂
Looks like someone's worked on the radio in the not too distant past, one of the valves says "Made in Russia" and those green caps look fairly recent as well. The originals were probably all ERO100 paper caps. Roederstein (now part of Vishay-Roederstein) was a well-known manufacturer but paper caps are no good after 50-odd years, no matter who made them. They also had a bit of bad luck with their electrolytics in the 80s and early 90s. Older Roederstein caps are usually labelled ERO or Roederstein, later ones (early 80s onwards) are labelled ROE. If I remember correctly that logotype change occurred when the owner's son took over the company.
Top job on that transformer!
Thanks @Ragnar8504. I replaced the valve, the owner sent a set of NOS valves with the set so I fitted them after I rewound the transformer. One of the new valves caused distortion in the FM 🙄🙂
Sunday morning breakfast with Dave, a great start to the day! I was given a 1964 Goldentone ( Rose Morris Melbourne) 1755 guitar amp that needs some love. Upon inspection it has never been touched except some one had put a standby switch in and drilled through the front panel back lit logo to fit it.🤬Thanks mate awesome video keep well!
Thanks Antony. That is annoying when someone drills a hole and ruins the product and especially the logo 🤦♂️ Hopefully you can get a replacement 👍🙂
WHOLLY MOLELY! That’s sommme coil winding machine. Great job on that power transformer Dave 👍👍 That radio really really rocks. 😮
Thanks Jim, it's quite a beast 😄
Hi Dave, you threw me with your pronunciation of "deckle", which I finally figured out to be decal (dee' kal) accent on first syllable. this is a shortening of the French word "decalcomania". Anyway thanks for your videos.
Yep, we don't emphasise the first syllable like Americans, like Can-berra or Bris-bane. That is too much effort for us downunder 😄 Thanks Fred 👍🙂
Stay well David. It's always nice to see that the exceptional build quality of those 50's era German radios is still appreciated all over the globe.
The transformer is faulty because of a wrong setting in the voltage selector, I guess (240V vs. 220V spec.). We can make do with the original transformer here in Europe without problems, even after all those years.
Don't hesitate to ask European enthusiasts for more antiquities, we can still pull those old radios from the junkyard on a regular basis, if you can pay for shipment :)
Thanks DB. This radio came direct from Europe so shouldn't have been subject to a higher voltage, it still had the European plug as well 🤔 Thanks DB, I'll keep that in mind for future European radio spares 👍🙂
Great to hear that your okay! Very interesting your new transformer winder, great job. Also noted the 'Vegemite' product placement. Always enjoy watching your channel. Cheers for now!
Thanks Peter. The Vegemite jar is my alignment tools holder 🙂 The winder will be great for future projects 👍
Holy Cow, and you said that you were not comfortable working on solid state devices, but you rewind transformers, Mr. Carson's Lab can't even do what you do with transformers, you are amazing, if you were 25 you could probably start a rewinding business that would make a million dollars (AUD) thanks for showing the world how at lest to do transformers.
Thanks Tom. I might have to start a transformer winding business to pay for the winder 😄😉
Wow. That radio survived all that time and some useless employee dropped it and kicked it across the floor and damaged it...but they want to be paid 15 an hour...
It was damaged during postage from Europe Wilfred 🤦♂️🙂
Hi Dave. Never apologise for long videos. I find them particularly interesting. Often far more entertaining than some of the stuff on British TV. Glad to hear your vision is back to good again, so carry on the good work , Cheers Bob.
Thanks Robert. I would rather watch YT than TV most of the time too. Cheers 🙂
Great job on the transformer rewind. can you please tell us where you got the Jackon 47uf caps from. Cheers
Hi Geo, thank you. The Jacksons came from RS Components 🙂
Amazing jop Dived thank you very much for your Amazing video
Thank you Amaral 🙂
Woohoo, another Dave Tipton video. I've been binge-watching your old videos lately to get my Dave fix. Luckily my memory is pretty shot these days so what was old is new again. Old age is great, you're always meeting new people and you get to hide your own Easter eggs. I told my son the other day to quit making fun of my memory otherwise he'll be sorry when there are no eggs under the tree this Christmas. Anyway, a superb job as always and I hope your eyesight remains good as well as your health in general.
Thanks Mark. Luckily my memory is still good. Luckily my memory is still good 👍🙂
Always a pleasure. And, I enjoy long videos. Thanks, David.
Thank you Stephen 🙂
Great video! You wouldn't think something as electrically simple as a transformer could be such a complex nightmare, but here we are. Excellent tip on the hole saw, but I couldn't get that to work for me. But, the cheap tools emporium had some chassis punches that came to my rescue so that's an alternative. Looking forward to your next video as always.
Hi Stephen. They are a simple device but a bit of a learning curve to get a decent result. I have been looking for chassis punches, especially 'D' punches but they are many hundreds of dollars, even for one punch. A much neater and cleaner chassis hole making option. Thanks Stephen 👍🙂
Very impressed mate, hard to believe you learnt all from utube. Im clearly not concentrating sufficiently. Must try harder(where have I heard that before?)👍
Thanks Lawrence. Haha... yes, all from RUclips. We have all heard that 😄
Hello David glad you're doing well. Those German radios are fine and beautiful and they like to challenge 😁
I couldn't agree more Chris... especially the challenge part 😄
Great work, David, love the new bench toy for winding transformers, it looks great and performs very well.
Thanks Theo 👍🙂
the reason the number of turns on the filament isn't enough, is most likely due to the wire resistance. 0.02 ohms/meter for the 1.03mm wire or thereabouts. I am not sure how many meters are on there but it looked like a decent amount.
Interesting thought @kevtris. That could be it. Thanks 👍🙂
Pleased to heard your eyesight is resolved. Most impressive txf rewind, you seem to have a tool for every eventuality. I admire your skill, you seem to be something of a polymath. Your self effacing commentary is most amusing and appealing. Best wishes from the U.K.
Thanks Colin, eyesight is returning nicely. I am a bit self effacing, I will work on that 👍🙂
Totally absorbing to watch as always. The transformer is beautiful. I do like these German radios, so full of features. Looking forward to next time. 😊
Thanks Pauline 🙂
As I watched the transformer being unwound...did the thought cross your mind, "What have a gotten myself into?"
Watching the machine winding the wire, I had a vision of your wife cutting you free of the tangled up windings as the machine incorporated your hand into the transformer!
It would have been quite the story for the "first responders" having a few beers at days end.
Haha... that would be funny, my winder running amok requiring the jaws of life to free me I often wonder what I'm getting myself into Neil, sometimes I make it worse 🙄🙂
Очень нравится Ваш канал. Прошу Вас добавлять украинские или русские субтитры. Подписался. Ваша работа великолепна и достойна уважения. Лайк!
Спасибо. Есть украинские или русские субтитры, их нужно только включить. Выполните поиск в Google, чтобы узнать, как активировать автоматический перевод субтитров на RUclips 🙂
I've been impressed with your radio repair and rebuild abilities for some time now David, and I really appreciate your humor!! 😅Best wishes on your eyesight health. Gene from Tennessee.
Thank you Gene 🙂
Lovely bit of kit, it'll sound fantastic when it's on it's own speakers. New transformer winder is impressive, once you've sussed the fine tuning it'll be worth it's weight in gold!
Totally agree, thanks Paul 🙂
David, you made a smashing job of re winding the transformer :-D
It looks like a new one.
I hope you scanned that diagram on the outer of the transformer. You can re-work it for any transformer you make.
I did say a while back you would be creating a transformer company "Tipton transformers .Ltd." Est: 2023. ha ha :-D
Problems with your peepers, sorry to hear that mate :-(
Thanks @zx8401ztv. I didn't scan it but I have the information from it, it will be easy enough to replicate. Peepers are getting much better now 👍🙂
Great job with rewinding that transformer Dave.
Looks like the winding machine has issues with feeding the wire straight.
Could it be the wire slipping sideways in the feeder/tensioner as it moves back and forth?
It would probably also need to tension the wire as much as it could without breaking the wire.
But again great result being your first attempt, the second suck of the sav will be even better 😊
Thanks Geir. The machine shouldn't have to guide the wire on so much as the wire should run on next to the preceding wire. I will get better at it, I learned a lot from doing this one 👍😀
Thanks David, I have been waiting for this and it turns out, unexpected... You must have a lovely wife... Nice winding machine and I think if you sort out a holding for the wire-spool it works as a dream. My machine I buildt have 2 axles, one for the bobbin and one for the the spool and 3 tension rolls between that i thought should let the wire walk over the winding, and it sort of doing that if the wire is over 0.5mm, otherwise it needs a little help but I have time when it does 32rpm flatout.... I also have a velleman counter which have a output to manage a relay so I can set the numbers of turns and it stops. It is nice to now that a blown transformer isn't the end of the road.
A question, you isolated the laminations, is it necessary? I have used transformers out of old batterychargers and there they have put all E:s from one end and I:s from the other and weld it together, not so isolated...
Thanks again for the insporation to build the winding machine, it have really helped to get it done.
Hi Leif, thank you. My wife is wonderful 😘 Well done making your own winder, I will run mine slower next time, there is no hurry. The laminations are insulated to limit eddy currents forming. The eddy currents oppose the building and collapsing of the AC magnetic field. For a power transformer the 'E's and 'I's should be staggered. In a output audio transformer the 'E's and 'I's should be laid as you describe but an insulation paper between the end of the 'E's and side of the 'I's 🙂
Great work on that rewinding of the power transformer! It shows you the build quality in the day with a 50+ year old radio still working after a little TLC tobthe transformer. I love these old radios. Great to see you perserver with the rebuild. Next would be the alignment and cabinet work, looking forward to that !!. Good news in regards to you eye sight too.
Thanks Stephen. I'm improving on the rewinds, it's good to be able to do it, save a few radios that may be scrapped. Alignment next week 👍🙂
Awesome video thanks Mr Tipton very informative 👍🇬🇧
Thank you Phil 🙂
Very impressed with that transformer. Its a work of art!!! What are your thoughts on the active-ground capacitor. I've come across these a few times and ended up deleting them because I've not known what to do with them. Even thought they don't draw current the whole idea predates RCDs. I'm wondering if moving it to neutral instead of ground or even leaving them off altogether is going to make much difference to noise and interference.
Thank you @Seiskid. I replace them, I have left them off and could't detect any additional noise and a lot of people do leave them off. I replace them just because 👍🙂
Hi David, good to hear that your eyesight has improved. The winding machine is very nice, I suggest rigging something up so the wire feeds off of the spool directly into the guides. Your video skills are very good. Wiping the egg off of the schematic looked cool. Well done as always. Kudos and shalom!
Thanks Otto. I am going to design a reel so the wire can feed of the spool without twisting the wire. Shalom 🙂
Lovely machine. Too bad it has a gui instead of a bluetooth module and an app. Next version, I guess.
Oh no, I am happy pressing buttons on the panel. Imagine controlling it from an app 😖🙂
Very nice job on the transformer 👍 Most people would install a replacement. I like Loewe radios, worked on some lions (= Loewe 😉 ).
Thanks @rotwang83. A replacement wouldn't be as much fun 😀
Dave, how about adding *Jim Burns* to your list of sites to follow? He's a chassis genius!
Done some time ago, thanks @tubeDude48 👍🙂
What sort of varnish did you use to impregnate the windings? I have used a clear electrical varnish which is dissolved in a solvent, I guess xylene from the smell. I apply to each layer with a brush, allow to dry, add another coat, allow to dry, then a layer of Croyfilm before winding the next layer. Very time consuming, and there will be voids which reduce thermal conductivity. Is your varnish a two part one that doesn't need to evaporate the solvent?
I use the Croyfilm to provide insulation between layers and reduce mechanical stresses on the wire insulation. I wind by hand, which is very time consuming but you get a neat result, no overlapping turns, again less mechanical stress on wire insulation.
I don't bother cleaning off rust because the rust is a good insulator. It doesn't look half as good as your nice shiny laminations though, and I guess in a damp environment mine would continue to rust whereas yours is protected.
It was an solvent based insulation coating. It is available in clear as well. I don't have access to it at the moment to check. It sounds like you go to more trouble than I do 😄 Yes the rust will insulate, I don't usually clean them that much but these were pretty bad.
Another great video Dave! That transformer is beautiful and deserves to be displayed prominently, not hiding inside the radio! Your new coil winding machine looks amazing too. You really went the extra distance on this one. Glad to hear your health has improved so you can continue to do what you love and share it with the world!
Thank you Chuck. I am happy with my vision now, it's probably better than I hoped 👍🙂
You are now officially the transformer whisperer. I was glued to the monitor watching you rewind that transformer. 53 minutes went in a flash. Looking forward to the alignment of that beast. It must have cost a pretty penny when new. Glad to hear your health is on the mend. Great video as usual.
Thanks Ian. If it hadn't worked I would be more than whispering 😄
Very nicely done 👍 now you're going to get flooded with requests to rewind people's shorted transformers.
Thanks Jake. I just won't answer the door 😉🙂
Nothing worse than rewinding a power transformer. You have a top of the line machine there. I don't think Don from Restoreoldradios has one so sophisticated. Always a great learning experience from you on how to do things right. But
you're not done yet. Too many things left , so on to a part 2!
Hi Steve. Agreed, rewinding is a lot of work. The winder makes it easier but a lot of work to get to that stage 👍🙂
Fantastic machine and what a wonderful understanding wife you have there, sacrificing the holiday money for the winder.
Watching the machine spinning and the discrepancies in the winding, I wonder if it's just winding too fast and there's a bit of bounce in the wire especially since you're winding onto a square spool. I dunno, just a thought.
Great to hear you're getting through your health issues, that's the most important thing of all.
Thanks Ellesmere. I think she capitulated with the winder to stop me whining 😄 That's a thought, it can be run a bit slower, I'll try that next time 👍🙂
Great job rewinding that transformer. Have a nice weekend David.
Thank you Paul 🙂
Great Video
Ive got the next model down from the sane year ... the Loewe Opta Apollo.
Unfortunately the bracketry for tone control pots on both sides are damaged so are going to take a bit of fabrication to even perform let akone look right but I like a challenge.
Thank you Mr Looney. Good luck with your Apollo and fabricating new brackets, that sounds like fun 👍🙂
Hi Dave, great video always interesting and pleasing to see how you overcome each challenge that pops up.cheers.
Thanks Dom 🙂
Reading all the comments about starting your own transformer winding business, most of them are joking of course but the reality is that there are very few transformer winders around now who will deal with small units like these. Most of the companies that do transformers are more on the industrial side and charge quite a bit to do small transformers.
Over this side of the ditch in NZ I know of only one chap who is still winding transformers and he's getting on a bit. Eventually he will pass on and there will be one less option for getting them done. I have encouraged a young chap who is surprisingly skilled in electronic repair (he's only 17) to look at learning the art of transformer winding as it will serve him well for the rest of his life and provide a little extra income on the side.
I don't want to be winding transformers all the time but very handy if I need to do one for myself or the occasional friend. If I had tried to get this rewound it would have cost hundreds of dollars and the guy that used to do them for me retired. I might as well put the money into a new winder. I hope your young friend can set himself up but I doubt there is much money to be made from the venture, at least from the hobby side of it 👍🙂
Well I must say that's one nice coil rewind and a very useful machine. I'm sure your get ask to rewind coils by people at the radio club and other restorers.
Thanks Alun. I expect to get a few requests but that will be OK 🙂
Wow !! Very interesting !! I've never seen a transformer rebuilt before.
Thanks Thomas 🙂
Very nice job with your winding machine! If you look at the video, when the windings laid down perfect it seemed like the lead was right on, when they skipped a bit, it seemed the lead was a little ahead of the windings. All in all a great addition to your kit!
There are a few improvements I can make @theoldbigmoose, that is one of them. I hope to make steady improvements as I learn more 👍🙂 Thanks.
7:30 "Blue Ring" Tester..... made by an *Octopus?* LOL😁
🙂