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gbj_tester in reply to @Hovis

In standard radial bearings, only 3 or 4 balls make contact during the load, at any given time. In Angular Contact bearings, ALL balls are engaged

Bullshit in the context of hubs and BBs where two radial bearings are preloaded against one another and act exactly like a pair of angular contact bearings. The only advantage of an ACB in that case is that you can stuff bigger bearings into the same hole, and BB30 bearings are already plenty big enough. If you want the biggest possible ACBs in your hubs, buy Shimano.

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Hovis in reply to @gbj_tester

For a BB86 in my case, a 24mm spindle.

So if I understand correctly, if bearing size is the same, I shouldn't bother, but if they use larger ball bearings for the ACB, then they are worth going for?

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gbj_tester in reply to @Hovis

For a BB86 in my case

Not sure whether you deserve sympathy or mockery, I suppose it depends on whether you bought the bike or had it given to you. Notwithstanding that, radial bearing cartridges are not where the problem lies with BB86, so I wouldn't spend extra to get ACB.

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