Torque and RPM Graph for Castle Creation products ?

[othello]

Great information. Thanks to both of you.

>Pdelcast: It would also be the same if you doubled the number of poles and kept the winding the same...

Meaning: The simple saying that a 2 pole motor "has" more torque than a 4 pole motor is simply wrong giving the same windings and rotor size. This is what i thought as you can not pack more magnetic material on the same rotor.

[SpEEdyBL]

Originally Posted by Pdelcast

That equation only models electrical losses -- not magnetic losses (magnetic losses are lumped in with the IO constant...) Keep in mind that magnetic losses are non-linear (especially at high power.) Also, the IO constant needs to be measured at the same RPM as the output -- because other losses (like windage) are also non-constant (windage losses are RPM cubed...)

Thanks Patrick. Whoops, forgot to multiply I0 by V, but oh well, its only a theoretical equation that will result in a graph similar to the one posted. I knew there were other variables of some sort. Otherwise it makes feigaos seem really efficient!