cooling fan for motor

[mark christopher]

which is best? blow onto the motor or suck air away?

[Ashlandchris]

Blowing will always be more directional so should cool locally quicker

[beale]

Very interesting question, at speed I believe it serves no purpose unless mounted on top on a heat sink blowing or sucking
In front of the motor blowing at it
On a heatsink blowing backwards mounted at the back
No expert cos that's a has been under pressure but makes sense

[Dombrasky]

most things..esc and pc cpus, graphic cards etc,and ive had motor heatsinks with fans have all blown so it must be blow

[mattr]

http://www.oople.com/forums/showthread.php?t=84500

Blow.

[SlowOne]

+1 - blow.