As I'm probably going to be cleaning up a fair few parts in the future, I thought I'd try the electrolysis method of getting rid of some of the rust.

This method involves submerging the item to be cleaned in a solution of washing soda (Sodium Carbonate) and passing a current through the solution.

I'm trying it out on a brake disk clamp for the rear calipers on a 75. Been in there for about 3 hrs now and already there is a nice scum on the top of the liquid.

I'll give it another hr then pull it out to see whats happened.

Here is what it looked like before it went in:



And here is the setup running:



We'll see what it looks like when I get it out and give it a wipe/brush down.