Bob Kuykendall wrote:


Some folks have elaborate overboard dump tubes that they extend out of
the belly of their glider so that they can pour overboard without
getting pee on the glider. This is more than an aesthetic concern,
since the pee is corrosive and often gets drawn into the landing gear
well where it can corrode the metal undercarriage parts.

Or worse: it corrodes the rudder hinges and cables. The successful
systems aren't really elaborate (it's just a tube sliding through a
tube), but are long enough to extend away from the glider. Some do it by
having the end of the tube at the back, rear, bottom corner of an
extended gear door (requires the gear to be partially extended in use);
some use a stiff tube that is pushed out the belly, which gets the pee
far enough from the glider it doesn't land on it. It's best to look at a
successful system for guidance, so you can avoid potential corrosion
problems.

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Eric Greenwell
Washington State
USA