Akai GXC 710D vintage cassette deck from the mid 1970's
Vložit
- čas přidán 22. 07. 2024
- A quick look at a Akai GXC-710D two headed cassette deck. This is a very well made cassette deck that should last a long while if properly maintained. It's classic design is pleasing to the eye.
Vintage beauty 🤩👍🏻
I've not yet finished working on my 710D, but I have to say it's a deck I really like. Not perfect, but it is very well made, and no silly unobtainable ICs to worry about. ;o)
That looks like a real beauty sitting on top of the Akai tape deck?
i have the reel to reel of this brand and a double tape one but cant find it online
I also have this deck, and have been working on it for nearly a week.
What's your opinion on the RW function - does the deck easily rewind from one end of the tape to the other end?
Once it was all cleaned up with new belts it ran smoothly. The belts are sensitive. They do require the exact sizing If they are a touch too wide, tight, or loose you will have issues. Try and source out the exact correct belts.
@@sayhellohello The main drive belt is 88mm diameter, by 5mm wide. It's about 0.5mm/0.55m thick. Measured, it's about 0.25% slow, which is about as good as I'll get it. The RW/FF clutch belt needs to be thick, and so the best I have sourced is 37.5mm diamter, by 1.5mm thick, but not 1.9mm as this is too tight in my opinion.
The main clutch at the rear offers too little coefficient of friction, but yes, I've cleaned mine too, and added a new felt pad for the clutch. Yes, it rewinds all the way, but struggles near the end. Why? - the take-up reel table is naturally frictional, it appears to be the way it's been designed. I've opened it up and compare it with the service manual schematics.
@@JamesE707 It is hard to know what is going on without seeing the deck. It should not struggle near the end of the rewind. Ideally, you would want the tape to rewind and fast-forward normally right up until the end of the tape. What I would check is the motor. I do have to qualify myself by stressing that I am not a technician. I have been mentored by a very good professional technician. He has helped me a lot. But, the experience also showed me that I am not a professional technician - just a guy who likes to tinker around with vintage stereo gear. Good luck with it!
@@sayhellohello Thanks for your replies. Well, as it happens I am a semi-retired mathematician and electronics engineer. The problem is not the motor - the motor is not at all stressed by the various loadings. The free-running current is about 162mA, and barely alters through any period during Play/RW/FF. The problem is now only slight, however what causes the slowing down of RW towards the end is *clutch slip*, and it does this for two reasons: coefficient of friction of the rear clutch is not quite high enough, and/or the frictional load offered by the rightmost reel table is quite high. I believe it's a design flaw. I have over 30 cassette decks, and it's not that uncommon that some machines begin to struggle with RW towards the end of the RW run.
Sorry if I gave the impression that I was asking for help, I was merely comparing other folk's AKAI machines.
Cheers.
James.
I meant to add that I have cleaned the rear clutch completely and added new clutch felt, and even 'sandwiched' a little silicone grease to increase slip friction slightly. Yes it works, but not as efficient as FF. Anyway, I am being a bit 'picky', no worries. :o)