OK, I'll do the first reply. Hundreds of us know enough about Frankenphones to comment on them, though most of us know very little about the topics you mentioned. But that doesn't mean they aren't fascinating: 1. Cylinder making 2. Grennet cells 3. Class M motors
Since I know virtually nothing about cylinder making, I couldn't make a good response, like suggest a formula change. But I have posted here about how beautiful your light-colored cylinders at the Edison Historical Site are. I was there this summer. I have never seen a Grennet cell in use. I couldn't name anyone who owns a Class M. Nevertheless, I am very interested in all of those topics. Especially the Class M motor. I'm an electrical engineer who spent a good part of my career on starting up new DC motors and the variable speed electronics drive controls that have been used with them since the 1960's. So, yes, I know that brush tension against the commutator is very important. Did you say the Class M brushes are made of COPPER? I've never seen a brush that wasn't made of carbon or perhaps brass in very old motors. But I know wire brushes were used by Edison and others before Frank Sprague invented the carbon brush for street car DC series motors. Jim Nichol On Nov 26, 2010, at 7:55 PM, Thomas Edison wrote: > I always notice that threads about frankenphones, and non helpul stuff like > that go on forever,while. Talk about how to mold records, or how to adjust > the brushes on the governor, so there is no wow , or how to. Change the > electrolytic, sal amoniac for Grennet plunge battery for a class M get no > responses. By the way keep the contact points on the govenor clean, the > copper brushes touching with the same pressure on both sides, and make shure > to keep a little above 2 amps, at all times so the motor is strong, the few. > Cass Ms I heard were way out of adjustment, they should have no wow or > flutter, they were recording Phonographs for goodness sakes! _______________________________________________ Phono-L mailing list http://phono-l.oldcrank.org
