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Hi all,The slightly too fast TD-124 saga continues. Thanks to all who supplied advice last weekend. I tried all of it...every bit, but the speed is still too fast. One writer mentioned that it could be the motor itself having a speed fluctuation that is/was outside the normal allowable fluctuation.
Anyway, to try another tack, I have a TDK-101 motor that I can transplant into the TD-124. The motors look identical except that there are 8 wires going into the TD-124 motor (red, yellow, black, and green) and only two (both red) going into the TDK-101. Essentially, the TDK-101 doesn't have the voltage changing "hub" that appears on the TD-124.
So...I am looking for guidance as to how to make this transplant in regards to wiring. Again, I have limited electrical knowledge. I have a multi-tester, but need very specific directions on how to use it, if I must.
If someone wants to take me under their wing, I'll splurge for the phone call or I can send pics.
Dave
Follow Ups:
If you have any patience left (and I understand if you don't), could you pop off the platter and take a pic of the motor, belt, magnet, stepped pulley so we can see how it's set up?Probably won't help, but you never know...
Hi Pete,I am not much with electrical side, but I do understand the basics of how the TD-124's mechanical operation...the speed switching, the fine speed control, the belt alignment, etc. I've been working on turntables for years, just not a 124.
Anyway, as an update, my brother-in-law who is an electrician just looked at and followed all of the wiring for me. He is 99% sure of the way I have to hook up the 101 motor. I will lose the capability to run at 150 and 220 volts, but I would never need that anyway. So, tomorrow I am going to desolder all of the current motor connections at that voltage "hub" and then reconnect the 101 motor to the places he is confident will have it run at 110v.
Wish me luck! I'll report back.
Did you run a strobe to see exactly what rpm the 124 motor was driving your platter?Did you run your multimeter to test the voltage on your ac lines?
I am wondering why tilting the motor's capstan did not achieve the speed control you were seeking? Did it make any perceivable change to the pitch at all?
No tilting a 124 like the 160 series, is there?The line voltage I assume is okay because it's the same plug I have run a gazillion other ac table motors through with accuracy.
Both the 124's strobe and a regular pop on strobe show slight extra speed.
Dave
Hey Tubes,Tilting the motor capstan on a TD124? I'm not sure how you'd do that...
But if you can, all it would do (I think) is throw the belt off. But I am all ears!
Which I think he tried.I think I am confusing this with a belt drive speed issue thread.... The 124 is an idler. So tilting the motor will probably do nothing at all.
One of us should create a DIY speed control for electric motors that does not cost an arm or a leg. I wonder if Mark Kelly could build up a good circuit design and we could have someone like Hagerman build a PCB.
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