I recently read here something about the "inter usage" of brake and gear cable housings.
O.k. I am a novice:
Brake cables can be used in both derailleur and brake cable housings? Or is it that derailleur cables can be used in both cable and derailleur housings?
Also what brand is the following frame? It's like 60's or 70's I believe but no indication/name/decal, etc.