First, what is the blue coating R&M put on their rotors? It seems that they are the only ones that did this. Secondly, and I'm referring to the art deco period, what on God's green earth motivated them to weld the windings in place? I'm currently working on a #1604, but this is the third R&M that I've found to have this situation. At first I thought it was some Hoedunk that lost the spacers and did this during a rewire, but finding it on others shows it to be a factory assembly job. If it was strictly an economizing move, why go to the trouble of adding a special oil port for the pivot shaft? And why go to the expense of machining an oil wick on the oscillator output shaft? Both add expense to production that somehow overrides any engineering cost spacers on the head or motor assembly bolts. Can anyone shed some light on this subject?
