Originally Posted by
JohnDThompson
At Trek we used a fiberglass sleeve to insulate between the carbon fiber and aluminum.
This. Don't just rely on the epoxy for insulation. Epoxies come in many formulations, some of which have filler reinforcements (kind of acts like re-bar within the plastic) which may alter it's conductive properties. A wrap or two of lightweight fiberglass is enough to insulate from galvanic corrosion.