>OK! Thanks for the info. Uh, dumb question . . . does brass work a little longer than >copper? Or since copper is thicker, does it last longer? Should the super heater tube >be larger diameter than the exhaust steam line? As to superheater lines. Most all locos I have use copper tube .125 O.D. Which seems to work just fine.My Wrightscale Porter, which is a few years old, shown no sign of pitting. I did notice that Malcolm did aim the burner 180 opposite the superheater tube. My Roundhouse Fowler is about 14 years old, I should have a look at it's tube for the last word. GaryB.
