Thought I would give you an update as the pump is installed and pump pressures/flows in both ground run and flying look good. Installation is on an RV-12 .... after looking at the path for the drain line, I modified my approach somewhat. There is limited clearance between the lower cowl and the lower engine casing (less than 1-1/2 in). I made a made an "L" shaped bracket for an adel clamp and then used the open engine attachment point just below cyl #1 to attach the clamp bracket. I used 1/4" fuel hose for most of the drain and used fire sleeve over the segment located above the muffler. Near the engine mount in the rear, I used a section of 1/4 in aluminum tubing which was stubbed into the fuel drain hose and clamped with an Oetiker clamp. The aluminum tube has a 90 degree bend and the horizontal run of the tube is supported with adel clamps mounted to the engine mount. The aluminum tube vertical run is located near the nose wheel firewall attachment and the gascolator. Used a hose spring clamp to attach the drain to the barb on the bottom of the pump.
