Al skids on steel frame corrosion

[Cort]

I have RCI powder coated skid plates on the way for my F150. I’d like to make sure I don’t have galvanic corrosion. Should I add an insulator of some sort between the frame and skids or will the powder coat and paint on the frame be enough.

The reason I went with aluminum is mainly weight savings knowing I’m not using this truck as a hardcore off roader.

Thanks,

 

[Boort]

@Cort

I have RCI powder coated skid plates on the way for my F150. I’d like to make sure I don’t have galvanic corrosion. Should I add an insulator of some sort between the frame and skids or will the powder coat and paint on the frame be enough.

The powdercoat should be enough to keep galvanic corrosion in check (as long as it is still there). I'd consider making some thin washers from HDPE (milk bottles and thin cutting boards are good sources). Then put 2-3 between the frame and skid and another 2-3 between the skid and washer on the bolt side. This will also help reduce any metal on metal squeaking. See previous discussion at: https://www.overlandbound.com/forums/threads/skid-plate-bushing-spacer.6676/#post-106932

Boort

 

[Road]

Interesting question and interesting advice! Great thing to keep in mind for all the aluminum/steel connections that are becoming more and more prevalent as aluminum bumpers, trailer frames, armor, and other parts become more popular. I honestly would not have thought about it in some cases, but will now.

 

[Cort]

@Cort



The powdercoat should be enough to keep galvanic corrosion in check (as long as it is still there). I'd consider making some thin washers from HDPE (milk bottles and thin cutting boards are good sources). Then put 2-3 between the frame and skid and another 2-3 between the skid and washer on the bolt side. This will also help reduce any metal on metal squeaking. See previous discussion at: https://www.overlandbound.com/forums/threads/skid-plate-bushing-spacer.6676/#post-106932

Boort

Awesome! Thank you!