cleaning up a flywheel

the unpainted rim of the flywheel on my petter is badly rusted from being stood, and i'd like it to be shiny. i tried holding some emerycloth against it while it was running, which has improved it, but it is slightly pitted. i can't afford to send it off to get the rim machined to get rid of the pitting, and was wondering if anyone has a cheaper option?

I just use a wire brush or emery whilst running and find the result to be ok, the trick is protection once it's cleaned, alot use cling film or lightly oil it.

Stu.

After shinning my flywheels up I use fire great polish when engine is running spread some on a rag , let dry then buff up stops them rusting for ages
Jonesey