It might be cursed by its model number ;-) Regarding your brakes, I used heat shrink also on one of my own, not the glued type, but it's not skipped a beat so far, so it's probably okay. Since then, I found some small fuel hose at my chainsaw store, I know you have one or two of those up there. It's kind-of a yellowish-green transparent color, very flexible like urethane, and will probably last several lifetimes. Nice work sticking with it and getting it done!
Thanks again for the lamps! I ordered some latex surgical tubing as a more permanent solution for the brakes. The heatshrink doesn't stop the reels well enough and it tends to really yank hard on the tape when it reaches the end in rewind and fast forward.
I'm only 10 minutes in. What I would put in the positions of those bipolar caps is RM5 WIMA film capacitors, they are available up to 4.7uF, and will never change their values, unlike electrolytics. Although I don't yet get how these are critical for alignment, because they are seemingly just snubber capacitors to protect the driver from the inductive spikes of the motor coils. I have to replace those capacitors in my Technics direct drive decks, I will probably use WIMAs, but because the ESR of the WIMAs is much lower (IIRC 0.05 ohm range, while the original bipolar SMD electrolytics are about 5-8 ohms), I will put 4.7 ish resistors in series with them, to prevent unwanted load on the driver IC.
Heat shrink gets too slippery to mimic a rubber part. After heating, roughen the surface with sandpaper and then treat it with either 'Rubber Renue' or another aggressive rubber cleaner. This will give it grip.
Apologies if I missed it, but did you check the wow and flutter figure? It should be 0.025%. I presume that means 0.05% for combined record and playback.
It's not in the video but I did check it. I'm waiting for the next wow and flutter video for that, which should be pretty soon now. I have enough new decks serviced that I want to see if the RS-B755 is still the best one I have for making 3kHz tapes. I also got new software I'm trying to get used to. The deck should do the same number for both recording and playback - it's not additive.
I wonder how the direct drive (magnetic) reels would affect the tape recordings over time as they are in pretty close proximity to the cassettes. Would Sony have used MU metal to shield the reels from the cassette compartment?
На сколько я понял, новые прижимные ролики не имеют бронзовой втулки и состоят целиком из бронзы. Кто-то уже выяснил, что латунь съедает ось. На aliexpress можно купить ролики с пластиковой основой, дёшево и с отличным качеством.
I love this mechanism, if one mechanism should be copied it's this one, with modern electronics obviously, because everything can be 💯 automatic, including the configuration.
I am restoring a JVC TD504. I am grateful for its simpler design, mechanicals & big flywheels. I COULD NEVER HANDLE the tuff ones like you. ❤
I can not believe the complexity of this tape deck. More impressive is your knowledge. Nice work.
It might be cursed by its model number ;-) Regarding your brakes, I used heat shrink also on one of my own, not the glued type, but it's not skipped a beat so far, so it's probably okay. Since then, I found some small fuel hose at my chainsaw store, I know you have one or two of those up there. It's kind-of a yellowish-green transparent color, very flexible like urethane, and will probably last several lifetimes. Nice work sticking with it and getting it done!
Thanks again for the lamps! I ordered some latex surgical tubing as a more permanent solution for the brakes. The heatshrink doesn't stop the reels well enough and it tends to really yank hard on the tape when it reaches the end in rewind and fast forward.
I'm only 10 minutes in. What I would put in the positions of those bipolar caps is RM5 WIMA film capacitors, they are available up to 4.7uF, and will never change their values, unlike electrolytics. Although I don't yet get how these are critical for alignment, because they are seemingly just snubber capacitors to protect the driver from the inductive spikes of the motor coils.
I have to replace those capacitors in my Technics direct drive decks, I will probably use WIMAs, but because the ESR of the WIMAs is much lower (IIRC 0.05 ohm range, while the original bipolar SMD electrolytics are about 5-8 ohms), I will put 4.7 ish resistors in series with them, to prevent unwanted load on the driver IC.
Heat shrink gets too slippery to mimic a rubber part. After heating, roughen the surface with sandpaper and then treat it with either 'Rubber Renue' or another aggressive rubber cleaner. This will give it grip.
Apologies if I missed it, but did you check the wow and flutter figure? It should be 0.025%. I presume that means 0.05% for combined record and playback.
It's not in the video but I did check it. I'm waiting for the next wow and flutter video for that, which should be pretty soon now. I have enough new decks serviced that I want to see if the RS-B755 is still the best one I have for making 3kHz tapes. I also got new software I'm trying to get used to. The deck should do the same number for both recording and playback - it's not additive.
I wonder how the direct drive (magnetic) reels would affect the tape recordings over time as they are in pretty close proximity to the cassettes. Would Sony have used MU metal to shield the reels from the cassette compartment?
I'm not sure the magnetic field would be close or strong enough to matter - maybe the cover plate in this deck has been engineered to help with that.
What a complicated machine, wow
Thank's Your video i learn english!
Hi! Where can i find that alignment gauge?
I got mine from Willy Hermann, who was moving away from selling them at the time. I'm not sure he has any left.
@@Oklawolf
Me: you can ask Hermann for more alignment gauges
You: **What a great idea! Why did I not think of that?**
На сколько я понял, новые прижимные ролики не имеют бронзовой втулки и состоят целиком из бронзы. Кто-то уже выяснил, что латунь съедает ось. На aliexpress можно купить ролики с пластиковой основой, дёшево и с отличным качеством.
My advice, Don't buy ever complicate Audio Decks. The '70 decks are the most simple and stronger.❤
Isn't 666 ...the devil's number?
It's a very appropriate number for this deck.
it's a sony
I love this mechanism, if one mechanism should be copied it's this one, with modern electronics obviously, because everything can be 💯 automatic, including the configuration.