Originally Posted by
f4rrest
So, like galvanic corrosion that makes a carbon seatpost stick inside of an aluminum frame?
If so, maybe the mechanic meant that sweat was acting as the electrolyte between the aluminum stem and the carbon steerer.
Guess there is a thread on roadbikereview about sweat corrosion, from people who like to use trainers a lot. According to wikipedia, 7075 AL is more suscetible to corrosion than 6061/6069.
- Though some claim if it was anodized and painted properly, sweat should not be corroding the AL.