Your problem is in the mainspring. It needs to be pulled and ALL the old lubrication removed. 4"0" steel wool and wd40 will do that. Relube and put the spring back in. That will get rid of the problem. DON'T soak it in kerosene or some other short cut to cleaning. The old stuff has got to come off the spring.
Ken Danckaert On Mon, Sep 1, 2008 at 12:50 PM, Ron L'Herault <lherault at bu.edu> wrote: > OK, gang, it is time to tap into the lists' wisdom. I'm working on an > Amberola 30. The hook came unsoldered and the reproducer needed a rebuild. > Those two easy repairs (the spring was in the case)completed, I tested the > phonograph and found that the speed is a bit erratic. It will sound nice, > then slow just a bit then return to speed for a while only to slow again. > The carriage moves easily and the horn bobbles and rotates as it should. > The governor is lubricated and the pad has been oiled. There is no > evidence > of crud or damage to the governor disk. There were a few teeth on the > large > hear that had a bit of damage but a bit of judicious filing has cured the > noise the damage created, and besides, the speed variation is more random > than the cycle of the gear noise. I'm thinking that the mainspring may > need > to be removed, cleaned and re-lubricated but I thought I might see if there > is anything else I missed before tearing it apart. > > Thanks, > > Ron L > > > _______________________________________________ > Phono-L mailing list > http://phono-l.oldcrank.org >
