What is the reason for bearing spacers?

General Yo-Yo
1

Why do some yoyos use/require them? It’s obviously a design choice. well maybe not obviously but ppl know more about designing yoyos than me and they put em in, so…

There’s got to be a reason. Why are they? What are they for?

Sorry if this is a stupid question. I have a lot of questions about yoyo design. It’s fascinating.

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2

For hybrids i think the hub has to be pressed in from the cup and you want to use a spacer to cover the rest of the bearing seat with metal

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3

Also you can adjust gap width with them so that’s cool for 2a and 4a yoyos.

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4

Ohh that makes sense. The only throws I’ve seen them on have been non-metal at the gap. Thank you!

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