|Old drain pipe elbow compared to 3/4" PVC pipe|
Fixing this was a small job that I finished between thunderstorms despite the cold, though I did resort to using a heat gun to carefully warm up the fiberglass resin and to make sure it set and cured correctly. The drains can now be cleared with my pinky-finger.
Basically the project consisted of cutting out the old drain tubing, drilling the drains holes larger (3/4") and putting new drain tubes in place that were larger diameter (3/4"), shorter and more vertical. I used PVC pipes as the drain tubing. PVC can bond well to fiberglass especially if you sand it a bit and pass a flame under it, to get rid of the slippery glossy surface texture. Wiping down the PVC with acetone further improves the bond with fiberglass.
|Old cockpit seat scupper drain pipe-- long narrow horizontal runs with sharp bends|
|New, better draining cockpit seat scupper piping|
|New drain exit, will be glassed-in and sanded flush with cockpit interior, weather permitting|