I believe in washers.
I know I was out of skateboarding for a lenghty time, but I sure as hell don't remember spacers back in the 80's. Are they a small wheel thing?
Skateboard wheel bearings are MADE to not wiggle. If they do, it is so minimal you would not notice while riding.
They are made to be tightened to a specific measurment, not all the way down. Anymore and will start to drag.
I deal with bearings all day.
And bearings inside an engine are completely different and ride on a thin layer of oil, the reason those types of bearings have clearances.
I guess I don't see the need for a spacer. The hanger touches the inner bearing (or washer), that inner bearing is sitting in a cup, up against a shoulder on the inner part of the wheel whith nowhere to go. Same thing on the outside of the wheel. Unless the theory is somehow you are going to blow out the inner races of the bearings, but fuck that.
It looks like you're new here. If you want to get involved, click one of these buttons!