David, love your cat's hat!
shame about the motor, my 652A has the same problem, the carbon brushes were just a tiny wee bit worn (see below...), and the armature grooving means the new ones won't sit properly - main issue being the sparking interferes with my downstairs neighbours' freview box! A shame as it's so smooth otherwise. I'm trying to find out if you can skim a commutator without a lathe...
Have you warmed to it at all? Maybe it sensed your hostility
The grey ones aren't the prettiest though. There is an easy way to improve the suction - I've cut a small bit of metal sheet so that when the converter is on it covers most of the remaining gap in the fan inlet, and secured it with a bit of strong duct tape. Makes a huge difference, when you put your hand over the hose end the bag twitches like it does on a Junior and the motor tone changes, it's well worth trying if you find the hose!
I've tried Oreck bags instead of H1's, cut off just above the cardboard collar. They fit the outer bag ok, and initial airflow also seems stronger, but I felt that they clogged too quickly. Don't forget that with the 652 etc it's less messy to just remove the whole bag assembly with the lever spring, turn it upside down and change the bag that way.
shame about the motor, my 652A has the same problem, the carbon brushes were just a tiny wee bit worn (see below...), and the armature grooving means the new ones won't sit properly - main issue being the sparking interferes with my downstairs neighbours' freview box! A shame as it's so smooth otherwise. I'm trying to find out if you can skim a commutator without a lathe...
Have you warmed to it at all? Maybe it sensed your hostility
The grey ones aren't the prettiest though. There is an easy way to improve the suction - I've cut a small bit of metal sheet so that when the converter is on it covers most of the remaining gap in the fan inlet, and secured it with a bit of strong duct tape. Makes a huge difference, when you put your hand over the hose end the bag twitches like it does on a Junior and the motor tone changes, it's well worth trying if you find the hose!I've tried Oreck bags instead of H1's, cut off just above the cardboard collar. They fit the outer bag ok, and initial airflow also seems stronger, but I felt that they clogged too quickly. Don't forget that with the 652 etc it's less messy to just remove the whole bag assembly with the lever spring, turn it upside down and change the bag that way.
