Aluminum tandem axle trailer corrosion

[reiddo1]

I have a 1979 (I think) aluminum tandem axle trailer for my 1979 Glastron v216. There are no identifying markings on the trailer to indicate the manufacturer or year. The spring shackles are welded to mild steel angle running from front to back. The aluminum chassis of the trailer fits in the angle and is bolted to it. The mild steel angle is badly corroded and needs to be replaced. I plan on using galvanized angle in it's place. Any other ideas would be welcomed.

 

[Bob_VT]

Re: Aluminum tandem axle trailer corrosion

Well if you intend to weld new brackets to galvanized..........you must grind off the coating first and be aware that the fumes are very toxic.

I would just replace the angle iron with the same or heavier. Consider this...... if it is a 1979 the angle has lasted a long time. With replacement and proper maintenance it should last another 30 years.......... how long do you intend to keep the boat.

 

[Harritwo]

Re: Aluminum tandem axle trailer corrosion

If you are using galvanized angle, Ensure you grind off the coating prior to welding on BOTH sides of the angle, after welding you can cold galv it back. Have some Milk in a location close by while you are welding/grinding just in case as it helps to eliminate the taste ingestion of the galvanize dust/fumes. Wear a respirator while welding/grinding the galv. Another option is CRES 316 but i would probably go back with A-36 Steel since it has lasted this long. Also when you go back together, put some dielectric tape between the angle and the aluminum to help eliminate any bimetallic corrosion. Wrap the hardware with teflon tape prior to assembly, it helps when you need to remove it and it prevents galvanic/bimetallic corrosion.

 

[reiddo1]

Re: Aluminum tandem axle trailer corrosion

Thanks for all your good comments; I am inclined to go with the mild steel as a direct replacement mainly because of the length of time the current mild steel has held up and the inherent health problems associated with working with galvanized metal.

 

[Bob_VT]

Re: Aluminum tandem axle trailer corrosion

Good idea.

You could use thicker steel angle for piece of mind