I recently visited an arts and craft store in Copenhagen. There I found a large chunky graphite stick. I have often used graphite, from a pencil, for tracks and guns, either ground up on a piece of sandpaper and applied with a finger tip or a brush, or just used the pencil directly on the item.
This morning I started to grind up some graphite, from my graphite stick and rubbed it on the tracks, with the tip of a finger. Then I stopped "why are you using your finger, when you can use the large flat end of the graphite stick"
I used the flat end of the graphite stick, on the tracks and finished in no time at all. This was so easy. Just put the stick on the tracks and rub it back and forth.
In this case I have used rubber tracks, but I'm sure this could be used on any type of tracks.

Thanks for the great tip. That looks like a simple, elegant solution, and the tracks look great. I'm off to the Artist Supply store near me now to find that graphite stick.

Cheers,
Mike

Cool stick! I usually use powdered dry lube for large applications.Dust some on and then finger rub for highlight.If I have a 'neat attack' ,I'll use a stiff bristle flat brush and use a dry brush stroke on 'em.
cheers!