On Mon, 23 Apr 2018 13:30:56 +1000, James
wrote:

On 23/04/18 10:48, John B Slocomb wrote:


Aluminum alloys corrode at amazing rates if in contact with another
metal, particularly in the presence of water which provides an
electrolyte. Aluminum seat tubes in steel frames, for example.

The partial solution is to use a good antisieze, or even grease, to
insulate the parts.



But beware of greasing when there are carbon fibre parts involved.

http://forums.roadbikereview.com/com...sts-40455.html

Actually I have a carbon fiber seat post. Bought it at some swap meet
and never used it :-(
--
Cheers,

John B.