I have a Turnigy SK5055-580 Aerodrive XP (580KV), and am looking for what size the bearings are, and if anyone knows what bolt-on prop adapter I can pick up as a spare.
(so far mine does not seem to be having magnets come loose or having the bell slide out of position)
This motor has been superseded twice, first by the 50-55B-600kv (which aside from color looked the same), and now by the L5055B-600, which looks a bit different in construction but still quite similar.
BOCA shows a similar motor (50-55a 400kv) as taking two of the 8 x 12 x 3.5mm bearing.