Dyson Digital Motor (Vacuum Cleaners)

[Gary]

There are verity of speeds and the datasheets do match, what you need to look at is the nominal speed not the max speed.
As an example there is a motor that has a max speed of 20000 RPM, but at that speed the torque is very low, but at 12000 RPM, the torque is at its highest and this is the speed we rate the motor at.
this is the misconception a lot of people have.
If a motor has a max speed of 20000 RPM, does not mean that you can get the most power at that speed because torque drops as speed goes up.

I looked at those a few days back Gary...are they 12.000rpm or 20.000rpm? datasheet and description don't match :confused: