Originally Posted by dsk
Originally Posted by gfretwell
I think a 60hz motor would still run at 50hz but if it is an induction motor it will run hotter and slower.

That is correct, the 50Hz motors does hoften have more iron (are heavier) so temperature monitoring may be a good idea.
The speed of an induction motor will follow the frequency!


That's exactly the point of using higher frequencies, especially the 400 Hz in aviation. Transformers and motors can use much less iron and that means less weight. On the other hand if you need slow-running motors they need to have more poles than their 50 or 60-Hz equivalents.