Page 2 of 2
Re: Gem Model A adjusting question and repair shop nightmare
Posted: Wed Aug 13, 2014 9:47 pm
by rgordon939
I would add one more possibility to the list. When I blow up your picture it looks like the drive belt is on an angle. Make sure the pulley on the motor and the belt grove on the mandrel are lined up in a straight line and that the belt is not rubbing. Also make sure the wheel on the tension bar spins freely.
Rich Gordon
Re: Gem Model A adjusting question and repair shop nightmare
Posted: Thu Aug 14, 2014 5:28 am
by RefSeries
In addition to the other excellent suggestions I suggest you make sure that there is a bit of lateral play in the feedscrew and governor shafts, by easing the position of the end bearings a bit. The Gem motor is not the most powerful, and I have found with mine (two of the three Model A types and B - E) that they like a little slack in the system. They run noisily, but quietening them down by screwing the bearings up tightly adds resistance. Also make sure that they are oiled well with fresh light oil. If the machine was 'done' a while ago oil like 3in1 can go gummy. Smearing a little Vaseline on the governor gear will quieten things down a bit.
I agree with the views that a Model A Fireside or a Standard D are about the most ubiquitous machine for general use. Sure, an Opera sounds wonderful, but only plays four minute cylinders and shouldn't be used for wax Amberols unless you have a model L reproducer. A Home D would be good but make sure the feedscrew is good or you will be forever trying to get it to track.
Hope this helps
Keith