Hello,

I want to assemble à Wing (hydrofoil) onto a 1 inch carbon tube. I wanted to wrapp an aluminium plate with carbon fiber around the tube so to be able to drill and bolt into the aluminium.

I see there can be some galvanic corrosion. What should i do to isolate the aluminium? Would a simple coat of resin be enough ? Is there some minimum thickness ?

These could be out at sea... And although the AL is going to be into the part, the bolts (stainles steel) are going to be into the Al...

Is there the same problem with brass ?

regards

Thanks for the videos and all of the site. It is very "pro".

Franck

There is no minimum thickness and resin wont work.  Coatings or barrier material is often used but the general practice is to put one layer of fiberglass in between the mount points. So a the lay up from the surface would be carbon fiber, fiberglass (in mount points) and then AL.  This creates a barrier between the carbon fiber and the Al and you wont have any corrosion.