You would be hard pressed saving 0.1g in weight. Probably closer to 0.05g. The weight you are taking off would have an absolute minimal impact on reducing rotational inertia. I did some calculations once on the benefit of using hollow 3/32 axles. Assuming that the weigth saving was 1g you could achieve the same reduction in rotational inertia by removing 0.001g off the tyre. There are better ways of achieving a performance gain.
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rick1776
cheers
rick1776