How would a double race bearing play?

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1

Like, if this was real:

2

Crap. You don’t need all that extra friction; it negates the point of a bearing.

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3

But… If a ten ball is better than an eight ball… And that’s a 19 ball…

4

The extra race will add considerably more friction than just having 2 more balls in the same race. You will probably also end up with an outer race larger than a “C” bearing.

5

10 ball bearings are not always better than 8 ball bearings. It has much more to do with the manufacturer’s quality standards than the number of balls in a bearing. One Drop’s 10 ball bearings do contain 2 more balls than most, but need to make up for that extra friction with higher tolerances.