Who amongst us here is not?JeffR1 wrote: Sun Mar 27, 2022 4:31 pm... but all they are, are self taught.OrthoFan wrote: Sun Mar 27, 2022 3:15 pmThat's been my experience too. Over the past 40 years, I've had about a dozen Victor motors serviced/cleaned/re-greased by highly rated shops that other collectors recommended to me. In one case, the springs bumped after about a week and I returned the motor to the shop to try again, but they refused and sent it right back to me, demanding reimbursement for the return postage!!! (I never sent it, and never heard back from them.)Inigo wrote: Sun Mar 27, 2022 12:41 pm .... in cases where the springs work well!
I'm in the same line as Jeff. There's one of those big Burton motors (4 springs) that I've disassembled and reassembled many times, cleaning the springs and re-greasing. I've tested automotive oil, lithium grease with and without graphite flake, baseline with graphite, moly grease... Yet I've not got a perfectly running motor. I don't remember what is the latest thing I used... butt it works, unless you left the machine alone for some weeks and try to play again. Then the thumping is there. Only after some plays it seems to work well. But after some days quiet, the problem is there again.
I don't know what happens. I've surrendered. Simply I won't try anything more, until the day one spring will break.
Examining the springs, I've noticed that used springs develop a scratchy surface on the coils, and I blame that. News springs seen to have a certain tempered, oily surface, that is lost after some time of use. I don't know if it's that, or that my springs are of inadequate size (one of them at least) although they seem all equal to me.
Perhaps if I disassemble it again, clean thoroughly, examine the clean springs, etc (changing the ones I find odd).... But I'm tired. Maybe this summer I'll try it again.
Each time I reassembled it seemed to work that very day. But after some time, the thumping appears.![]()
Even motors that have had new replacement springs--again, installed by shops that purported to specialize in this--have only worked properly for awhile, perhaps six months or so, before they started bumping again.
Now, when my 4-40's springs start bumping, I pull the motor, remove the barrel, put in a cap full of transmission fluid and "finger in" a small glob of molly grease through the hole, reassemble it, and it's normally good to go, bump-free, for about a year or two.
OrthoFan
