[martin.m]

Thank you for your replies. I spent an afternoon experimenting with a couple of these motors. Richard, I think you are correct regarding the clock oil. I used a drop of car engine oil and got much better results. John, thanks for the advice about the shims. I used strips of good quality (thicker than usual) writing paper to centralise the rotor. If the clearance is wrong, the motor will spin when turned by hand but when mains is applied will just sit there and vibrate. In the Grundig TK120 range of machines, the 250v HT and 6.3v heater supplies come from windings on the motor. It saves a lot of time if mains is applied for a quick test before fitting the motor back into the machine, The primary windings need to be connected in series for 240v operation of course. I think that in today's trendy speak, this has been a Learning Curve.