Stripped Pedal Threads

(Yes, that's a spark plug.)

If you strip out the threads in the right hand crank, you can use a 14x1.25mm spark plug thread repair kit from a car parts store to fix it. Pedal threads are normally 9/16-20 tpi, but the metric size is actually close enough to work. If you strip the left hand crank, you can theoretically still use that kit but you'll need another right hand pedal and some threadlocker (you're better off just replacing the left crank).

Rust Removal

There's a really easy way to remove mild to moderate surface rust from steel. You simply rub a piece of wet aluminum foil over the rusty part and it should become shiny again. This works especially well on chrome parts.

Rusty:

 

 

  

Shiny :)