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ok you're telling me something i don't quite know... it sounds to me like miche uses the same design as old vintage hubs (which is the only thing i know) BUT with sealed bearings... am i right? WHILE other hubs use another design i'm not aware of
what about novatecs?@Skülly
we are talking ambrosio zenith right? ok notedalso thank you everybody for the infos!
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it sounds to me like miche uses the same design as old vintage hubs (which is the only thing i know) BUT with sealed bearings
A reasonable summary.
Novatec axles have a shoulder to locate the bearing inner race, so it's trapped between the locknuts and the shoulder. You can't accidentally apply preload.
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What gbj_tester said.
I may have to retract what I said about bearing size, it seems the Miche hubs take 6001c3 bearings which measure 12 x 28 x 8mm and Novatec use a 6000 which are 10 x 26 x 8mm so both have the same 16mm difference between inner and outer diameters and the same depth so presumably the same ball bearing size. If anything, the larger diameter of the cartridge in the Miche hubs may mean more balls are contained within the cartridge so they should be the more reliable of the two.
I still don't like the lack of shoulder though and, anecdotally/in my experience, the hardware on Miche hubs is more prone to corrosion than that found on Novatecs.
They use a plain threaded axle with no shoulders for the bearing to sit on. This means axial loads are not so well supported and it also allows the bearings to be over preloaded on setup. The come nuts sleeve inside the bearing (so the bearing has a flat surface to sit on rather than thread) meaning the bearings are smaller than could otherwise be used.