JerryVan wrote:
Can you post some pics of the motor from various vantage points? Maybe one of us can spot the trouble.
Hello, here are the pics and at the same time what I think is the solution of the problem.
Following the above suggestion for which I thank you all, I tried to reason forgetting the spring, and I almost concluded that the culprit of the malfunction was somehwere in the gears. Looking here and there I noticed that the only evident reason for the spindle stoppage were the little screws locking the brass collars of the speed regulator on its shaft, which immediately banged into the turntable shaft gear whenever the motor tried to catch speed.
I noticed also on the cylindrical spacers that the two screws locking the shaft sleeves were somewhat loose, and therefore may be the shaft itself ended misplaced and caused the interference between the screws and the spindle gear. I moved slightly the shaft to the right and tighten the screws to lock it in place. The motor started to turn, caught speed, and the interference did not happen any more!
I'm pretty sure a professional gramophone engineer will shudder in horror, and I myself am not sure to have worked in a totally correct way, but this is the solution I found at the moment. Now I have only to reassemble the motor under the board and check if everything will work, especially the speed regulator lever.
Feel free to correct me or express your criticism anytime.
Thank you again and have a good evening.
p.s.: I beg your pardon in advance should my explanation be not clear or the english terminology less than correct!

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