On Mon, 02 Feb 2004 07:58:39 GMT, "Rich"
wrote:

Thanks , both of those sound do-able. Forgot to ask about the junction
between the aluminum trailer frame and the steel spring mounting angle. Can
some thick layer of grease be placed there or should I paint both the Al and
Fe in those locations, then apply one of the mentioned treatments?

Thanks.


Junctions of aluminum and mild steel preferentially attack steel.
(Stainless to aluminum junctions prefer the aluminum however)

There are two approaches: isolate the two metals electrically Easier
said than done. Think pressed linen/resin board, or some insulating
plastic of that kind. Bolts need insulating washers etc.,etc.

OR the easier, less satisfactory approach:

Protect the steel surface completely This is a tall order with
leaf-springs, which rub through insulating films easily.
I found floor paint worked well on a steel trailer exposed only to
fresh water. This is very hard non porous, and durable. But it's only
paint, in the end.

Brian W