06-05-2020, 07:13 PM
Hi Jeffrey,
I run it up gently over several minutes, starting it off with a manual tug on the toothed belt. I haven't timed it running down to rest, but it probably takes a minute or so. At operating speed, the (governed) motor seems happiest and calmest at 160 volts on the variac. It's an American motor, so presumably was intended for 60 Hz mains. Running it at 240 volts off the UK 50 Hz mains for a period does make it become a bit too warm.
I run it up gently over several minutes, starting it off with a manual tug on the toothed belt. I haven't timed it running down to rest, but it probably takes a minute or so. At operating speed, the (governed) motor seems happiest and calmest at 160 volts on the variac. It's an American motor, so presumably was intended for 60 Hz mains. Running it at 240 volts off the UK 50 Hz mains for a period does make it become a bit too warm.
