Talked of part of wheel (5)
I believe the answer is:
spoke
This clue is a double definition.
'talked' is the first definition.
('speak' can be a synonym of 'talk')
'part of wheel' is the second definition.
('spoke' is part of 'wheel')
'of' is the link.
(Other definitions for spoke that I've seen before include "Wheel's radial member" , "Bicycle wheel rod" , "Said something" , "gave address" , "Rung" .)