My Stearman is also just about ready to get back in the air. I was afraid that this winter was going to keep me from flying... but with an average temp of around 45 to 5o degrees it's hard not to go flying. The grass is still green! With the exception of this week it's been real nice.

I was running a OS 120 but that is being replaced with a BCMA 26. Other than a Homelite 25 mod I did last month I'm new to gassers. What does the nipple and fuel line do? Is this a pressure equalizer of some sort? I would think because the nipple is on top of the diaphragm the fuel line does not go to the fuel tank.