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sealed cartridges? I'm not sure if that precludes the presence of cones
He was using 'cones' as short hand for 'bearing retainer nuts'. Novatec run the bearing inner race directly on a shoulder on the axle, some cartridge bearing hubs do actually use something which looks kind of like a cone (but with parallel sides) to create the seat for the cartridge on a threaded axle, like this:
Cheers - I thought the MKII was sealed cartridges? I'm not sure if that precludes the presence of cones though, as I'm not too familiar with the insides of hubs.