Thread: Spacers
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Old July 17th, 2018, 03:37 PM   #9
Mort
Sk8 Ninja
 
Join Date: Aug 2012
Location: Huntington Wv
Posts: 3,484
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Spacers aren't a necessary item in quads. This is due to how the skate assemble vs inlines. Where inlines create a hold by torqued threads, they must have a spacer to keep the inner races from being pressed together when everything is tightened.

A quad skate uses nylock nuts, and does not require the same configuration to be made. Now, does it make much difference? No. Does it have measureable effect on the skates performance? Yes, but that depends on what you are doing if it matters.

If the bearing is "popped out" a little.. this means the spacer is too wide for the hub and is larger than the bearing seat width, so both bearings cannot be fully seated when a spacer is too wide. This causes the bearings to shift in the hub when skating when a heavy load is applied axially.

If the spacer is too small, the wheels will lose their ability to free spin when the axle nut is tightened down. This is due to the inner races being squeezed out of alignments with the outer races. The same happens on inline wheels sometimes when a spacer or wheel is out of tolerance. .001 inch of inconsistent width is all it takes for some bearings to develop drag, such as Qube 8 balls. Bearings like bones reds, which are a looser built bearing, will tolerate more inconsistencies before they start to bind up.

A correctly setup spacer in quad skates increases grip potential
. It braces the axle, as well as makes the wheel have virtually 0 play, and dampens vibrations, which reduces the tendency for a quad wheel to chatter/vibrate. It makes slides harder to control though.

A spacer typically makes a quad wheel perform with more consistent friction as well. So that is probably why a figure skater may want them installed correctly.
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