Originally Posted by
skrichter
Its kinda hard for me to believe these holes help with consistency/heat on a 1/10 electric vehicle. Do I think its slightly less rotating mass, yes. I'm just a little skeptical on this one I guess...

to be honest, me too. but realistically, they are less than 20 bucks and what else am i gonna spend that money on...... I'm not buying springs and brushes for motors any more LOL