Granted, there are enough threads reminding us to grease our seatposts, stems, and aluminum BB's, but here's another one more likely to be overlooked:



I just extracted this disaster from the bars from a mistreated 1976 Schwinn Voyageur II. The steel removal bolt had bonded itself to the barcon shell, requiring destructive removal of the barcon body.



Once the aluminum body was removed, the steel expander wedge was visible, which revealed something else: Two of the three plates on the wedge had bonded themselves to the aluminum walls of the bar. It required a couple of taps with a punch to break free.



This brings up two interesting points: Barcons - at least, the Suntour ratcheting design - have two points wherein they must be greased to prevent bonding; the barcon body, where the threaded cone is fitted (AL to steel), and the steel wedge plates against the aluminum bar itself.

I believe this would also apply to most of the other designs out there, though greasing locations might differ slightly - case in point, Simplex's cone is on a spinning shaft, Suntour's is fixed.

The bar was secured in a Park fork jig for the job.

-Kurt