Brunswick Panatrope 10-7 Springs

[AFPORTO]

These are mounted correctly. No worries. After they've been cleaned and regreased, you can go to full wind. If the springs are original, though, one could break, but if they have been extracted and assembled back with no problems, then they will go right for many years.

Thank you (Muchas Gracias) Inigo !

They are re-assembled recently. The only problem is that during the execution of the record there are bumps and jumps; maybe something that should be adjusted on the central shaft so that there is no slack; maybe some type of washer has to be placed at some point.

I appreciate your comment and kindness. Thanks

If they've been cleaned and lubed properly, there should be no bumps & jumps. Have you been able to wind the motor more than the 15 turns you mentioned?

Hi Jerry, I will try again this weekend !! I'm going to take the motor out of the phonograph and check if I can correct some gaps with washers and then I'll try to wind it up again; maybe 25 or 30 spins. I will give you a feedback shortly. Thanks

[AFPORTO]

I've noticed those occasional thumps in reassembled barrels using all or part of the original springs. I believe it's a matter of the old springs. Although you've cleaned them thoroughly, and then regreased, their hardened steel surfaces have lost that prime touch they had when new, and somehow they're not sliding properly now, the surface being old, scratched, and prone to grease adherence... I must say this happens with my hmv194 (four spring motor) which has a mixture of new and old springs. But it happened during a time (long) after the last reassembling. Ultimately she's behaving very well. Maybe time and use are favourable for good grease spreading, also oozing out the excess, who knows! With that motor, I never seemed to find a good grease. I don't remember what I used last time... I remember a time when it thumped at the middle of the first spring... Then I was using a mixture of lithium grease and graphite flake. I don't remember if I changed to Molykote at a given point out not... But it has abandoned the thumping. These later year I've used this machine only occasionally, due to home organisation issues. And now, every time I wind it fully and then play some records, it doesn't thump! A mystery...
Finally, my advice is to be patient. Maybe the thumping will cure alone with use. Use the machine and note if the thumping is there after some time, or if it is decreasing. And have luck not to break a spring in the meanwhile!

Hi Inigo

I appreciate your valuable comments. I will be patient and try to correct some slacks and I will get back to you as soon as I do this. Thank you very much!

[AFPORTO]

Dear colleagues, I would like your opinion because I believe that today I discovered the reason for the jumps and bumps during the execution of the records: as you can see in the photo I took of the spring gear that is closest to the crank, in its axis there is a groove or depression where another piece of metal or washer should be placed, which must have been lost or broken at some point in Brunswick's life. I realized that when I wind the crank more than 15 times, this slack causes the gear and its axis to move into the barrel, making a bump-like noise, always after about 2 minutes, displacing all the set. Please, if anyone knows about this technical and mechanical detail, I ask you to speak up. Thank you very much.