I am trying to upgrade some O scale freight cars and I am looking for brake wheels, stirrups, and grab ons. I have searched the internet diligently for these items and have come up with some decent stirrups and grabirons but I am a bit stumped on brake wheels. Could someone suggest a source for metal brake wheels or sturdy plastic wheels, and a good method of installing them on boxcars, particularly cars where the brake wheel has broken off ? I have seen some brake wheels with, simply, a center hole. How I would install the brake wheel is a bit of a mystery. I am trying to upgrade my skills. Many thanks.
J