What's the best way to clean up this rust? (pics)

This works and you have it at home..This is also how to prep galvanized for paint.. Vinegar wash was the only thing that would do it back in the day..:cheers:

Yep, you can make the stuff for cheap and it last a while too...

Lots less expensive than any of the in the bottle cleaners.

Jimacuda uses this mix exclusively and it makes things real nice after it's down. Best to hit the parts with a brush to knock off the big stuff and toss it in the pale.