Originally Posted by dtbaker
I am thinking that since *most* of us using DC motors only turn them one direction, and have advanced them for high voltage to the point where reversing motor direction with contactors is unlikely....
have any of the specialty motor people considered swapping in directional fans to get more efficient airflow than the typical simple radial design?
I had an ADC 8-inch with a modified internal fan, and it didn't really seem to run any cooler. I actually had to add booster fans to the comm. to keep it cool.
I can't remember exactly what type of fan it was, but I will try to find some pictures of it. I believe it was a high volume fan for a forklift application.