I know its been a long time since you posted this. Just checking to see if you have had any negative effects from the Galvanised stuff in the Aluminium trailer.
I was looking to put some galvanised braces into the floor in my Aluminium boat as supports above the infloor fuel tank (also aluminium).
I have put rubber bike tube over the galvanised square tubes and no actual contact with the fuel tank, was using Tefgel and rubber washers between the 316 stainless steel bolts that attach the galvanised braces to the aluminium boat upper braces.
Quote Originally Posted by suzygs1000 View Post
Hi,

Zinc is next to aluminium on the galvanic table, therefore there should be very little chance of corrosion if you use galvanised fittings on aluminium

I built an aluminium trailer a little over two years ago, and all the fittings on it are galvanised ie bolts, nuts, axles, discs, springs, multi roller fittings.


After two years of use, there is no sign of corrosion around any of the fittings!

It may happen eventually, but I am keeping an eye on it.

I always use Duralac with stainless bolts or screws.

I have never had a problem with al rivets with al mandrels.

Dave.