Thanks MarkT,
my background is in ecotoxicology and biology (some school physics), so I think I'll have even more physics questions when these magnets arrive!
How can I readily measure torque in my home office? I have a hobby PSU which will measure supplied volts and current draw and hobby multimeter.
One website says I should measure motor torque rating at point when the motor is stalled, when lifting a mass. If I measure current drawn at this point, with and without the magnets, does this give me a fair comparison?
Cheers